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note
	description: "EiffelVision pixmap. Mswindows implementation for drawable pixmap (drawable, not self-displayable)"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2021-10-14 00:26:23 -0800 (Thu, 14 Oct 2021) $"
	revision: "$Revision: 105878 $"

class interface
	EV_PIXMAP_IMP_DRAWABLE

create 
	make_with_simple (other: EV_PIXMAP_IMP)
			-- Create the current implementation using others
			-- attributes.

	make_with_pixel_buffer (a_dc: WEL_MEMORY_DC)
			-- Creation method for EV_PIXEL_BUFFER specially

feature -- Initialization

	init_from_pointer_style (a_pointer_style: EV_POINTER_STYLE)
			-- Initialize from a_pointer_style
		require -- from EV_PIXMAP_I
			not_void: a_pointer_style /= Void

	read_from_named_path (file_path: PATH)
			-- Load the pixmap described in file_path.
			--
			-- Exceptions "Unable to retrieve icon information",
			--            "Unable to load the file"
		require -- from EV_PIXMAP_I
			file_path_not_void: file_path /= Void
			file_path_not_empty: not file_path.is_empty

	refresh_now
			-- Force Current to be redrawn immediately.

	set_default_colors
			-- Set foreground and background color to their default values.

	set_with_default
			-- Initialize the pixmap with the default
			-- pixmap (Vision2 logo)
			--
			-- Exceptions "Unable to retrieve icon information"
	
feature -- Access

	accept_cursor: detachable EV_POINTER_STYLE
			-- Accept cursor set by user.
			-- To be displayed when the screen pointer is over a target that accepts
			-- `pebble` during pick and drop.
			-- (from EV_PICK_AND_DROPABLE_I)

	actual_drop_target_agent: detachable FUNCTION [INTEGER_32, INTEGER_32, detachable EV_ABSTRACT_PICK_AND_DROPABLE]
			-- Overrides default drop target on a certain position.
			-- If Void, will use the default drop target.
			-- Always void if Current is not a widget.
			-- (from EV_WIDGET_I)

	arc_cosine (v: REAL_32): REAL_32
			-- Trigonometric arccosine of radian v
			-- in the range [0, pi]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	arc_sine (v: REAL_32): REAL_32
			-- Trigonometric arcsine of radian v
			-- in the range [-pi/2, +pi/2]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	arc_tangent (v: REAL_32): REAL_32
			-- Trigonometric arctangent of radian v
			-- in the range [-pi/2, +pi/2]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	frozen background_color: EV_COLOR
			-- Color displayed behind foreground features.
			-- (from EV_COLORIZABLE_I)

	background_color_internal: detachable EV_COLOR
			-- Color used to fill figures.
			-- (from EV_DRAWABLE_IMP)

	Blackness: INTEGER_32 = 66
			-- Declared in Windows as BLACKNESS
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Bs_dibpattern: INTEGER_32 = 5
			-- A pattern brush defined by a device-independent
			-- bitmap (DIB) specification.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_dibpattern8x8: INTEGER_32 = 8
			-- Same as `bs_dibpattern`.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_dibpatternpt: INTEGER_32 = 6
			-- A pattern brush defined by a device-independent
			-- bitmap (DIB) specification
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_hatched: INTEGER_32 = 2
			-- Hatched brush.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_hollow: INTEGER_32 = 1
			-- Hollow brush.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_indexed: INTEGER_32 = 4
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_null: INTEGER_32 = 1
			-- Same as `bs_hollow`.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_pattern: INTEGER_32 = 3
			-- Pattern brush defined by a memory bitmap.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_pattern8x8: INTEGER_32 = 7
			-- Same as `bs_pattern`.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	Bs_solid: INTEGER_32 = 0
			-- Solid brush.
			-- (from WEL_BRUSH_STYLE_CONSTANTS)

	ceiling (v: REAL_32): REAL_32
			-- Least integral value greater than or equal to v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	Check_instruction: INTEGER_32 = 7
			-- Exception code for violated check
			-- (from EXCEP_CONST)

	Class_invariant: INTEGER_32 = 6
			-- Exception code for violated class invariant
			-- (from EXCEP_CONST)

	clip_area: detachable EV_RECTANGLE
			-- Clip area used to clip drawing.
			-- If set to Void, no clipping is applied.
			-- (from EV_DRAWABLE_IMP)

	Color_3ddkshadow: INTEGER_32 = 21
			-- Dark shadow for three-dimensional display elements.
			--
			-- Declared in Windows as COLOR_3DDKSHADOW
			-- (from WEL_COLOR_CONSTANTS)

	Color_3dface: INTEGER_32 = 15
			-- Face color for three-dimensional display elements and
			-- for dialog box backgrounds.
			--
			-- Declared in Windows as COLOR_3DFACE
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_btnface`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_3dhighlight: INTEGER_32 = 20
			-- Highlight color for three-dimensional display elements
			-- (for edges facing the light source.)
			--
			-- Declared in Windows as COLOR_3DHILIGHT
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dhilight`, `color_btnhilight` and `color_btnhighlight`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_3dhilight: INTEGER_32 = 20
			-- Highlight color for three-dimensional display elements
			-- (for edges facing the light source.)
			--
			-- Declared in Windows as COLOR_3DHILIGHT
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dhighlight`, `color_btnhilight` and `color_btnhighlight`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_3dlight: INTEGER_32 = 22
			-- Light color for three-dimensional display elements
			-- (for edges facing the light source.)
			--
			-- Declared in Windows as COLOR_3DLIGHT
			-- (from WEL_COLOR_CONSTANTS)

	Color_3dshadow: INTEGER_32 = 16
			-- Shadow color for three-dimensional display elements
			-- (for edges facing away from the light source).
			--
			-- Declared in Windows as COLOR_3DSHADOW
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_btnshadow`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_activeborder: INTEGER_32 = 10
			-- Active window border.
			--
			-- Declared in Windows as COLOR_ACTIVEBORDER
			-- (from WEL_COLOR_CONSTANTS)

	Color_activecaption: INTEGER_32 = 2
			-- Active window title bar. 
			--
			-- Windows 98/Me, Windows 2000 or later:
			--   Specifies the left side color in the color gradient of an active
			--   window's title bar if the gradient effect is enabled.
			--
			-- Declared in Windows as COLOR_ACTIVECAPTION
			-- (from WEL_COLOR_CONSTANTS)

	Color_appworkspace: INTEGER_32 = 12
			-- Background color of multiple document interface (MDI) applications.
			--
			-- Declared in Windows as COLOR_APPWORKSPACE
			-- (from WEL_COLOR_CONSTANTS)

	Color_background: INTEGER_32 = 1
			-- Desktop.
			--
			-- Declared in Windows as COLOR_BACKGROUND
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_desktop`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_btnface: INTEGER_32 = 15
			-- Face color for three-dimensional display elements and
			-- for dialog box backgrounds.
			--
			-- Declared in Windows as COLOR_3DFACE
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dface`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_btnhighlight: INTEGER_32 = 20
			-- Highlight color for three-dimensional display elements
			-- (for edges facing the light source.)
			--
			-- Declared in Windows as COLOR_3DHILIGHT
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dhilight`, `color_3dhighlight` and `color_btnhilight`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_btnhilight: INTEGER_32 = 20
			-- Highlight color for three-dimensional display elements
			-- (for edges facing the light source.)
			--
			-- Declared in Windows as COLOR_3DHILIGHT
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dhilight`, `color_3dhighlight` and `color_btnhighlight`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_btnshadow: INTEGER_32 = 16
			-- Shadow color for three-dimensional display elements
			-- (for edges facing away from the light source).
			--
			-- Declared in Windows as COLOR_3DSHADOW
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_3dshadow`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_btntext: INTEGER_32 = 18
			-- Text on push buttons.
			--
			-- Declared in Windows as COLOR_BTNTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_captiontext: INTEGER_32 = 9
			-- Text in caption, size box, and scroll bar arrow box.
			--
			-- Declared in Windows as COLOR_CAPTIONTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_desktop: INTEGER_32 = 1
			-- Desktop.
			--
			-- Declared in Windows as COLOR_BACKGROUND
			-- Was declared in {WEL_COLOR_CONSTANTS} as synonym of `color_background`.
			-- (from WEL_COLOR_CONSTANTS)

	Color_gradientactivecaption: INTEGER_32 = 27
			-- Windows 98/Me, Windows 2000 or later:
			--   Right side color in the color gradient of an active window's
			--   title bar. COLOR_ACTIVECAPTION specifies the left side color.
			--   Use SPI_GETGRADIENTCAPTIONS with the SystemParametersInfo
			--   function to determine whether the gradient effect is enabled.
			--
			-- Declared in Windows as COLOR_GRADIENTACTIVECAPTION
			-- (from WEL_COLOR_CONSTANTS)

	Color_gradientinactivecaption: INTEGER_32 = 28
			-- Windows 98/Me, Windows 2000 or later:
			--   Right side color in the color gradient of an inactive window's
			--   title bar. COLOR_INACTIVECAPTION specifies the left side color.
			--
			-- Declared in Windows as COLOR_GRADIENTINACTIVECAPTION
			-- (from WEL_COLOR_CONSTANTS)

	Color_graytext: INTEGER_32 = 17
			-- Grayed (disabled) text. This color is set to 0 if the current
			-- display driver does not support a solid gray color.
			--
			-- Declared in Windows as COLOR_GRAYTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_highlight: INTEGER_32 = 13
			-- Item(s) selected in a control.
			--
			-- Declared in Windows as COLOR_HIGHLIGHT
			-- (from WEL_COLOR_CONSTANTS)

	Color_highlighttext: INTEGER_32 = 14
			-- Text of item(s) selected in a control.
			--
			-- Declared in Windows as COLOR_HIGHLIGHTTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_hotlight: INTEGER_32 = 26
			-- Windows 98/Me, Windows 2000 or later:
			--   Color for a hot-tracked item. Single clicking a hot-tracked
			--   item executes the item.
			--
			-- Declared in Windows as COLOR_HOTLIGHT
			-- (from WEL_COLOR_CONSTANTS)

	Color_inactiveborder: INTEGER_32 = 11
			-- Inactive window border.
			--
			-- Declared in Windows as COLOR_INACTIVEBORDER
			-- (from WEL_COLOR_CONSTANTS)

	Color_inactivecaption: INTEGER_32 = 3
			-- Inactive window caption. 
			--
			-- Windows 98/Me, Windows 2000 or later:
			--   Specifies the left side color in the color gradient of an inactive
			--   window's title bar if the gradient effect is enabled.
			--
			-- Declared in Windows as COLOR_INACTIVECAPTION
			-- (from WEL_COLOR_CONSTANTS)

	Color_inactivecaptiontext: INTEGER_32 = 19
			-- Color of text in an inactive caption.
			--
			-- Declared in Windows as COLOR_INACTIVECAPTIONTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_infobk: INTEGER_32 = 24
			-- Background color for tooltip controls.
			--
			-- Declared in Windows as COLOR_INFOBK
			-- (from WEL_COLOR_CONSTANTS)

	Color_infotext: INTEGER_32 = 23
			-- Text color for tooltip controls.
			--
			-- Declared in Windows as COLOR_INFOTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_menu: INTEGER_32 = 4
			-- Menu background.
			--
			-- Declared in Windows as COLOR_MENU
			-- (from WEL_COLOR_CONSTANTS)

	Color_menubar: INTEGER_32 = 30
			-- Windows XP:
			--   The background color for the menu bar when menus appear as 
			--   flat menus (see SystemParametersInfo). However, `color_menu`
			--   continues to specify the background color of the menu popup.
			--
			-- Declared in Windows as COLOR_MENUBAR
			-- (from WEL_COLOR_CONSTANTS)

	Color_menuhilight: INTEGER_32 = 29
			-- Windows XP:
			--   The color used to highlight menu items when the menu appears
			--   as a flat menu (see SystemParametersInfo). The highlighted
			--   menu item is outlined with COLOR_HIGHLIGHT.
			--
			-- Declared in Windows as COLOR_MENUHILIGHT
			-- (from WEL_COLOR_CONSTANTS)

	Color_menutext: INTEGER_32 = 7
			-- Text in menus.
			--
			-- Declared in Windows as COLOR_MENUTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Color_scrollbar: INTEGER_32 = 0
			-- Scroll bar gray area.
			--
			-- Declared in Windows as COLOR_SCROLLBAR
			-- (from WEL_COLOR_CONSTANTS)

	Color_window: INTEGER_32 = 5
			-- Window background.
			--
			-- Declared in Windows as COLOR_WINDOW
			-- (from WEL_COLOR_CONSTANTS)

	Color_windowframe: INTEGER_32 = 6
			-- Window frame.
			--
			-- Declared in Windows as COLOR_WINDOWFRAME
			-- (from WEL_COLOR_CONSTANTS)

	Color_windowtext: INTEGER_32 = 8
			-- Text in windows.
			--
			-- Declared in Windows as COLOR_WINDOWTEXT
			-- (from WEL_COLOR_CONSTANTS)

	Com_exception: INTEGER_32 = 28
			-- Exception code for a COM error.
			-- (from EXCEP_CONST)

	configurable_target_menu_handler: detachable PROCEDURE [EV_MENU, ARRAYED_LIST [EV_PND_TARGET_DATA], EV_PICK_AND_DROPABLE, detachable ANY]
			-- (from EV_PICK_AND_DROPABLE_I)

	cosine (v: REAL_32): REAL_32
			-- Trigonometric cosine of radian v approximated
			-- in the range [-pi/4, +pi/4]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	Create_on_deferred: INTEGER_32 = 17
			-- Create on deferred
			-- (from EXCEP_CONST)

	cursor: detachable WEL_CURSOR
			-- Current cursor used.

	dashed_line_style: BOOLEAN
			-- Are lines drawn dashed?
			-- (from EV_DRAWABLE_IMP)

	dc: WEL_MEMORY_DC
			-- The device context corresponding to the image

	default_key_processing_handler: detachable PREDICATE [EV_KEY]
			-- Agent used to determine whether the default key processing should occur for Current.
			-- If agent returns True then default key processing continues as normal, False prevents
			-- default key processing from occurring.
			-- (from EV_WIDGET_I)

	deny_cursor: detachable EV_POINTER_STYLE
			-- Deny cursor set by user.
			-- To be displayed when the screen pointer is not over a valid target.
			-- (from EV_PICK_AND_DROPABLE_I)

	Developer_exception: INTEGER_32 = 24
			-- Exception code for developer exception
			-- (from EXCEP_CONST)

	Dib_pal_colors: INTEGER_32 = 1
			-- (from WEL_DIB_COLORS_CONSTANTS)

	Dib_rgb_colors: INTEGER_32 = 0
			-- (from WEL_DIB_COLORS_CONSTANTS)

	Dollar_applied_to_melted_feature: INTEGER_32 = 26
			-- $ applied to melted feature
			-- (from EXCEP_CONST)

	drawing_mode: INTEGER_32
			-- Logical operation on pixels when drawing.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True

	Dstinvert: INTEGER_32 = 5570569
			-- Declared in Windows as DSTINVERT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Dt_bottom: INTEGER_32 = 8
			-- Declared in Windows as DT_BOTTOM
			-- (from WEL_DT_CONSTANTS)

	Dt_calcrect: INTEGER_32 = 1024
			-- Declared in Windows as DT_CALCRECT
			-- (from WEL_DT_CONSTANTS)

	Dt_center: INTEGER_32 = 1
			-- Declared in Windows as DT_CENTER
			-- (from WEL_DT_CONSTANTS)

	Dt_expandtabs: INTEGER_32 = 64
			-- Declared in Windows as DT_EXPANDTABS
			-- (from WEL_DT_CONSTANTS)

	Dt_externalleading: INTEGER_32 = 512
			-- Declared in Windows as DT_EXTERNALLEADING
			-- (from WEL_DT_CONSTANTS)

	Dt_hideprefix: INTEGER_32 = 1048576
			-- Declared in Windows as DT_HIDEPREFIX
			-- (from WEL_DT_CONSTANTS)

	Dt_internal: INTEGER_32 = 4096
			-- Declared in Windows as DT_INTERNAL
			-- (from WEL_DT_CONSTANTS)

	Dt_left: INTEGER_32 = 0
			-- Declared in Windows as DT_LEFT
			-- (from WEL_DT_CONSTANTS)

	Dt_noclip: INTEGER_32 = 256
			-- Declared in Windows as DT_NOCLIP
			-- (from WEL_DT_CONSTANTS)

	Dt_noprefix: INTEGER_32 = 2048
			-- Declared in Windows as DT_NOPREFIX
			-- (from WEL_DT_CONSTANTS)

	Dt_right: INTEGER_32 = 2
			-- Declared in Windows as DT_RIGHT
			-- (from WEL_DT_CONSTANTS)

	Dt_singleline: INTEGER_32 = 32
			-- Declared in Windows as DT_SINGLELINE
			-- (from WEL_DT_CONSTANTS)

	Dt_tabstop: INTEGER_32 = 128
			-- Declared in Windows as DT_TABSTOP
			-- (from WEL_DT_CONSTANTS)

	Dt_top: INTEGER_32 = 0
			-- Declared in Windows as DT_TOP
			-- (from WEL_DT_CONSTANTS)

	Dt_vcenter: INTEGER_32 = 4
			-- Declared in Windows as DT_VCENTER
			-- (from WEL_DT_CONSTANTS)

	Dt_word_ellipsis: INTEGER_32 = 262144
			-- Declared in Windows as DT_WORD_ELLIPSIS
			-- (from WEL_DT_CONSTANTS)

	Dt_wordbreak: INTEGER_32 = 16
			-- Declared in Windows as DT_WORDBREAK
			-- (from WEL_DT_CONSTANTS)

	Eiffel_runtime_fatal_error: INTEGER_32 = 25
			-- Eiffel run-time fatal error
			-- (from EXCEP_CONST)

	Eiffel_runtime_panic: INTEGER_32 = 13
			-- Eiffel run-time panic
			-- (from EXCEP_CONST)

	Euler: REAL_64 = 2.7182818284590452353602874713526625
			-- Logarithm base
			-- (from MATH_CONST)

	Exception_in_signal_handler: INTEGER_32 = 20
			-- Exception in signal handler
			-- (from EXCEP_CONST)

	Exception_manager: EXCEPTION_MANAGER
			-- Exception manager
			-- (from EXCEPTION_MANAGER_FACTORY)
		ensure -- from EXCEPTION_MANAGER_FACTORY
			instance_free: class
			exception_manager_not_void: Result /= Void

	exp (x: REAL_32): REAL_32
			-- Exponential of v.
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	External_exception: INTEGER_32 = 18
			-- Exception code for operating system error
			-- which does not set the errno variable
			-- (Unix-specific)
			-- (from EXCEP_CONST)

	Floating_point_exception: INTEGER_32 = 5
			-- Exception code for floating point exception
			-- (from EXCEP_CONST)

	floor (v: REAL_32): REAL_32
			-- Greatest integral value less than or equal to v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	font: EV_FONT
			-- Font of Current.
			-- (from EV_FONTABLE_IMP)
		require -- from  EV_FONTABLE_I
			True
		ensure -- from EV_FONTABLE_I
			not_void: Result /= Void

	frozen foreground_color: EV_COLOR
			-- Color of foreground features like text.
			-- (from EV_COLORIZABLE_I)

	foreground_color_internal: detachable EV_COLOR
			-- Color used for lines and text.
			-- (from EV_DRAWABLE_IMP)

	generating_type: TYPE [detachable EV_PIXMAP_IMP_DRAWABLE]
			-- Type of current object
			-- (type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generating_type_not_void: Result /= Void

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
		ensure -- from ANY
			generator_not_void: Result /= Void
			generator_not_empty: not Result.is_empty

	get_bitmap: WEL_BITMAP
			-- Current bitmap used. Void if not initialized, not
			-- Void otherwise (see Invariant at the end of class).
			--
			-- Call WEL_BITMAP.decrement_reference when you don't
			-- need it anymore.
		ensure -- from EV_PIXMAP_IMP_STATE
			result_not_void: Result /= Void

	get_mask_bitmap: detachable WEL_BITMAP
			-- Monochrome bitmap used as mask. Void if none.
			--
			-- Call WEL_BITMAP.decrement_reference when you don't
			-- need it anymore.
		require -- from EV_PIXMAP_IMP_STATE
			mask_in_use: has_mask
		ensure -- from EV_PIXMAP_IMP_STATE
			result_not_void: Result /= Void

	Gwl_exstyle: INTEGER_32 = -20
			-- (from WEL_GWL_CONSTANTS)

	Gwl_style: INTEGER_32 = -16
			-- (from WEL_GWL_CONSTANTS)

	has_mask: BOOLEAN
			-- Has the current pixmap a mask?
		ensure -- from EV_PIXMAP_IMP_STATE
			has_mask_implies_mask_bitmap_not_void: Result implies get_mask_bitmap /= Void

	help_context: detachable FUNCTION [EV_HELP_CONTEXT]
			-- Agent that evaluates to help context sent to help engine when help is requested
			-- (from EV_HELP_CONTEXTABLE_I)
		ensure -- from EV_HELP_CONTEXTABLE_I
			current_if_exists: internal_help_context /= Void implies Result = internal_help_context

	hs_bdiagonal: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	hs_cross: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	hs_diagcross: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	hs_fdiagonal: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	hs_horizontal: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	hs_vertical: INTEGER_32
			-- (from WEL_HS_CONSTANTS)

	icon: detachable WEL_ICON
			-- Current icon used.

	Incorrect_inspect_value: INTEGER_32 = 9
			-- Exception code for inspect value which is not one
			-- of the inspect constants, if there is no Else_part
			-- (from EXCEP_CONST)

	internal_font: EV_FONT
			-- Font of Current for internal queries.
			-- Faster than calling `font` as we do not need to
			-- create a new EV_FONT every time.
			-- (from EV_FONTABLE_IMP)

	internal_font_height: INTEGER_32
			-- Height required to correctly display font of Current in pixels.
			-- (from EV_FONTABLE_IMP)
		ensure -- from EV_FONTABLE_IMP
			result_non_negative: Result >= 0

	internal_pointer_style: EV_POINTER_STYLE
			-- Cursor displayed when screen pointer is over current widget,
			-- as seen from interface.
			-- (from EV_WIDGET_I)

	Io_exception: INTEGER_32 = 21
			-- Exception code for I/O error
			-- (from EXCEP_CONST)

	is_dock_executing: BOOLEAN
			-- Is Current in the process of a dockable transport?
			-- (from EV_DOCKABLE_SOURCE_I)

	is_dockable: BOOLEAN
			-- Is Current dockable?
			-- (from EV_DOCKABLE_SOURCE_I)

	is_external_docking_enabled: BOOLEAN
			-- Is Current able to be docked into an EV_DOCKABLE_DIALOG
			-- When there is no valid EV_DRAGABLE_TARGET upon completion
			-- of the transport?
			-- (from EV_DOCKABLE_SOURCE_I)

	is_external_docking_relative: BOOLEAN
			-- Will dockable dialog displayed when Current is docked externally
			-- be displayed relative to parent window of Current?
			-- Otherwise displayed as a standard window.
			-- (from EV_DOCKABLE_SOURCE_I)

	line_width: INTEGER_32
			-- Line thickness.
			-- (from EV_DRAWABLE_IMP)

	log (v: REAL_32): REAL_32
			-- Natural logarithm of v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	log10 (v: REAL_32): REAL_32
			-- Base 10 logarithm of v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	log_2 (v: REAL_32): REAL_32
			-- Base 2 logarithm of v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	Loop_invariant: INTEGER_32 = 11
			-- Exception code for violated loop invariant
			-- (from EXCEP_CONST)

	Loop_variant: INTEGER_32 = 10
			-- Exception code for non-decreased loop variant
			-- (from EXCEP_CONST)

	mask_dc: detachable WEL_MEMORY_DC
			-- The device context corresponding to the mask

	frozen maskcopy: INTEGER_32
			-- Use SRCCOPY for foreground and R2_NOOP for background.
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)
		ensure -- from WEL_RASTER_OPERATIONS_CONSTANTS
			is_class: class

	Maskpaint: INTEGER_32 = 2229030
			-- 0x220326
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Maximum_buffered_string_size: INTEGER_32 = 10000
			-- Maximum size of string permitting a shared WEL_STRING object to
			-- be returned by `wel_string_restricted`.
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)

	Mb_abortretryignore: INTEGER_32 = 2
			-- (from WEL_MB_CONSTANTS)

	Mb_applmodal: INTEGER_32 = 0
			-- (from WEL_MB_CONSTANTS)

	Mb_default_desktop_only: INTEGER_32 = 131072
			-- (from WEL_MB_CONSTANTS)

	Mb_defbutton1: INTEGER_32 = 0
			-- (from WEL_MB_CONSTANTS)

	Mb_defbutton2: INTEGER_32 = 256
			-- (from WEL_MB_CONSTANTS)

	Mb_defbutton3: INTEGER_32 = 512
			-- (from WEL_MB_CONSTANTS)

	Mb_defmask: INTEGER_32 = 3840
			-- (from WEL_MB_CONSTANTS)

	Mb_help: INTEGER_32 = 16384
			-- (from WEL_MB_CONSTANTS)

	Mb_iconasterisk: INTEGER_32 = 64
			-- (from WEL_MB_CONSTANTS)

	Mb_iconerror: INTEGER_32 = 16
			-- Same as `mb_iconhand`.
			-- (from WEL_MB_CONSTANTS)

	Mb_iconexclamation: INTEGER_32 = 48
			-- (from WEL_MB_CONSTANTS)

	Mb_iconhand: INTEGER_32 = 16
			-- (from WEL_MB_CONSTANTS)

	Mb_iconinformation: INTEGER_32 = 64
			-- Same as `mb_iconasterisk`.
			-- (from WEL_MB_CONSTANTS)

	Mb_iconmask: INTEGER_32 = 240
			-- (from WEL_MB_CONSTANTS)

	Mb_iconquestion: INTEGER_32 = 32
			-- (from WEL_MB_CONSTANTS)

	Mb_iconstop: INTEGER_32 = 16
			-- Same as `mb_iconhand`.
			-- (from WEL_MB_CONSTANTS)

	Mb_iconwarning: INTEGER_32 = 48
			-- Same as `mb_iconexclamation`.
			-- (from WEL_MB_CONSTANTS)

	Mb_nofocus: INTEGER_32 = 32768
			-- (from WEL_MB_CONSTANTS)

	Mb_ok: INTEGER_32 = 0
			-- (from WEL_MB_CONSTANTS)

	Mb_okcancel: INTEGER_32 = 1
			-- (from WEL_MB_CONSTANTS)

	Mb_retrycancel: INTEGER_32 = 5
			-- (from WEL_MB_CONSTANTS)

	Mb_right: INTEGER_32 = 524288
			-- (from WEL_MB_CONSTANTS)

	Mb_rtlreading: INTEGER_32 = 1048576
			-- (from WEL_MB_CONSTANTS)

	Mb_setforeground: INTEGER_32 = 65536
			-- (from WEL_MB_CONSTANTS)

	Mb_systemmodal: INTEGER_32 = 4096
			-- (from WEL_MB_CONSTANTS)

	Mb_taskmodal: INTEGER_32 = 8192
			-- (from WEL_MB_CONSTANTS)

	Mb_topmost: INTEGER_32 = 262144
			-- (from WEL_MB_CONSTANTS)

	Mb_typemask: INTEGER_32 = 15
			-- (from WEL_MB_CONSTANTS)

	Mb_usericon: INTEGER_32 = 128
			-- (from WEL_MB_CONSTANTS)

	Mb_yesno: INTEGER_32 = 4
			-- (from WEL_MB_CONSTANTS)

	Mb_yesnocancel: INTEGER_32 = 3
			-- (from WEL_MB_CONSTANTS)

	Mergecopy: INTEGER_32 = 12583114
			-- Declared in Windows as MERGECOPY
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Mergepaint: INTEGER_32 = 12255782
			-- Declared in Windows as MERGEPAINT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	No_more_memory: INTEGER_32 = 2
			-- Exception code for failed memory allocation
			-- (from EXCEP_CONST)

	not_external_docking_enabled: BOOLEAN
			-- Attribute used for is_externally_dockable. We must implement
			-- is_externally_dockable this way as we have no easy solution to
			-- assign True to is_externally_dockable.
			-- (from EV_DOCKABLE_SOURCE_I)

	not_is_external_docking_relative: BOOLEAN
			-- Will dockable dialog displayed when Current is docked externally
			-- be displayed relative to parent window of Current?
			-- Otherwise displayed as a standard window.
			-- Internal reversed value of `is_external_docking_relative` as we cannot
			-- easily initialize a BOOLE to True in this case.
			-- (from EV_DOCKABLE_SOURCE_I)

	Notsrccopy: INTEGER_32 = 3342344
			-- Declared in Windows as NOTSRCCOPY
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Notsrcerase: INTEGER_32 = 1114278
			-- Declared in Windows as NOTSRCERASE
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Number_of_codes: INTEGER_32 = 31
			-- How many codes are there to represent exceptions?
			-- (from EXCEP_CONST)

	Old_exception: INTEGER_32 = 30
			-- Old exception code.
			-- (from EXCEP_CONST)

	Operating_system_exception: INTEGER_32 = 22
			-- Exception code for operating system error
			-- which sets the errno variable
			-- (Unix-specific)
			-- (from EXCEP_CONST)

	original_parent_position: INTEGER_32
			-- Original position in parent. Required
			-- to restore widget later.
			-- (from EV_DOCKABLE_SOURCE_I)

	Out_of_memory: INTEGER_32 = 15
			-- Out of memory (cannot be ignored)
			-- (from EXCEP_CONST)

	palette: detachable WEL_PALETTE
			-- Current palette used. Void if none.

	Patcopy: INTEGER_32 = 15728673
			-- Declared in Windows as PATCOPY
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Patinvert: INTEGER_32 = 5898313
			-- Declared in Windows as PATINVERT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Patpaint: INTEGER_32 = 16452105
			-- Declared in Windows as PATPAINT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	pebble: detachable ANY
			-- Data to be transported by pick and drop mechanism.
			-- (from EV_PICK_AND_DROPABLE_I)

	pebble_function: detachable FUNCTION [detachable ANY]
			-- Returns data to be transported by pick and drop mechanism.
			-- (from EV_PICK_AND_DROPABLE_I)

	pebble_positioning_enabled: BOOLEAN
			-- If True then pick and drop start coordinates are
			-- `pebble_x_position`, `pebble_y_position`.
			-- If False then pick and drop start coordinates are
			-- the pointer coordinates.
			-- (from EV_PICK_AND_DROPABLE_I)

	pebble_x_position: INTEGER_32
			-- Initial x position for pick and drop relative to Current.
			-- (from EV_PICK_AND_DROPABLE_I)

	pebble_y_position: INTEGER_32
			-- Initial y position for pick and drop relative to Current.
			-- (from EV_PICK_AND_DROPABLE_I)

	Pi: REAL_64 = 3.1415926535897932384626433832795029
			-- (from MATH_CONST)

	Pi_2: REAL_64 = 1.5707963267948966192313216916397514
			-- (from MATH_CONST)

	Pi_4: REAL_64 = 0.7853981633974483096156608458198757
			-- (from MATH_CONST)

	Postcondition: INTEGER_32 = 4
			-- Exception code for violated postcondition
			-- (from EXCEP_CONST)

	Precondition: INTEGER_32 = 3
			-- Exception code for violated precondition
			-- (from EXCEP_CONST)

	R2_black: INTEGER_32 = 1
			-- (from WEL_ROP2_CONSTANTS)

	R2_copypen: INTEGER_32 = 13
			-- (from WEL_ROP2_CONSTANTS)

	R2_masknotpen: INTEGER_32 = 3
			-- (from WEL_ROP2_CONSTANTS)

	R2_maskpen: INTEGER_32 = 9
			-- (from WEL_ROP2_CONSTANTS)

	R2_maskpennot: INTEGER_32 = 5
			-- (from WEL_ROP2_CONSTANTS)

	R2_mergenotpen: INTEGER_32 = 12
			-- (from WEL_ROP2_CONSTANTS)

	R2_mergepen: INTEGER_32 = 15
			-- (from WEL_ROP2_CONSTANTS)

	R2_mergepennot: INTEGER_32 = 14
			-- (from WEL_ROP2_CONSTANTS)

	R2_nop: INTEGER_32 = 11
			-- (from WEL_ROP2_CONSTANTS)

	R2_not: INTEGER_32 = 6
			-- (from WEL_ROP2_CONSTANTS)

	R2_notcopypen: INTEGER_32 = 4
			-- (from WEL_ROP2_CONSTANTS)

	R2_notmaskpen: INTEGER_32 = 8
			-- (from WEL_ROP2_CONSTANTS)

	R2_notmergepen: INTEGER_32 = 2
			-- (from WEL_ROP2_CONSTANTS)

	R2_notxorpen: INTEGER_32 = 10
			-- (from WEL_ROP2_CONSTANTS)

	R2_white: INTEGER_32 = 16
			-- (from WEL_ROP2_CONSTANTS)

	R2_xorpen: INTEGER_32 = 7
			-- (from WEL_ROP2_CONSTANTS)

	rabs (v: REAL_32): REAL_32
			-- Absolute value of v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	real_source: detachable EV_DOCKABLE_SOURCE
			-- Result is EV_DOCKABLE_SOURCE which should be
			-- dragged when docking begins on Current.
			-- (from EV_DOCKABLE_SOURCE_I)

	real_target: detachable EV_DOCKABLE_TARGET
			-- Result is target used during a dockable transport if
			-- mouse pointer is above Current.
			-- (from EV_WIDGET_I)

	Rescue_exception: INTEGER_32 = 14
			-- Exception code for exception in rescue clause
			-- (from EXCEP_CONST)

	Resumption_failed: INTEGER_32 = 16
			-- Resumption failed (retry did not succeed)
			-- (from EXCEP_CONST)

	Retrieve_exception: INTEGER_32 = 23
			-- Exception code for retrieval error
			-- may be raised by retrieved in IO_MEDIUM.
			-- (from EXCEP_CONST)

	Routine_failure: INTEGER_32 = 8
			-- Exception code for failed routine
			-- (from EXCEP_CONST)

	Runtime_check_exception: INTEGER_32 = 29
			-- Exception code for runtime check being violated.
			-- (from EXCEP_CONST)

	Runtime_io_exception: INTEGER_32 = 27
			-- Exception code for I/O error raised by runtime functions
			-- such as store/retrieve, file access...
			-- (from EXCEP_CONST)

	Serialization_exception: INTEGER_32 = 31
			-- Serialization exception code.
			-- (from EXCEP_CONST)

	Signal_exception: INTEGER_32 = 12
			-- Exception code for operating system signal
			-- (from EXCEP_CONST)

	sine (v: REAL_32): REAL_32
			-- Trigonometric sine of radian v approximated
			-- in range [-pi/4, +pi/4]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	sqrt (v: REAL_32): REAL_32
			-- Square root of v
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	Sqrt2: REAL_64 = 1.4142135623730950488016887242096981
			-- Square root of 2
			-- (from MATH_CONST)

	Srcand: INTEGER_32 = 8913094
			-- Declared in Windows as SRCAND
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Srccopy: INTEGER_32 = 13369376
			-- Declared in Windows as SRCCOPY
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Srcerase: INTEGER_32 = 4457256
			-- Declared in Windows as SRCERASE
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Srcinvert: INTEGER_32 = 6684742
			-- Declared in Windows as SRCINVERT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	Srcpaint: INTEGER_32 = 15597702
			-- Declared in Windows as SRCPAINT
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)

	sub_pixmap (area: EV_RECTANGLE): EV_PIXMAP
			-- Return the subpixmap of Current described by rectangle area.
		require -- from EV_DRAWABLE_I
			area_not_void: area /= Void
		ensure -- from EV_DRAWABLE_I
			result_not_void: Result /= Void

	ta_baseline: INTEGER_32
			-- The reference point is on the base line of the text.
			-- (from WEL_TA_CONSTANTS)

	ta_bottom: INTEGER_32
			-- The reference point is on the bottom edge of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)

	ta_center: INTEGER_32
			-- The reference point is aligned horizontally with the center of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)

	ta_left: INTEGER_32
			-- The reference point is on the left edge of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)

	ta_noupdatecp: INTEGER_32
			-- The current position is not updated after each text output call.
			-- (from WEL_TA_CONSTANTS)

	ta_right: INTEGER_32
			-- The reference point is on the right edge of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)

	ta_top: INTEGER_32
			-- The reference point is on the top edge of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)

	ta_updatecp: INTEGER_32
			-- The current position is updated after each text output call.
			-- (from WEL_TA_CONSTANTS)

	tangent (v: REAL_32): REAL_32
			-- Trigonometric tangent of radian v approximated
			-- in range [-pi/4, +pi/4]
			-- (from SINGLE_MATH)
		ensure -- from SINGLE_MATH
			instance_free: class

	tile: detachable EV_PIXMAP
			-- Pixmap that is used to instead of background_color.
			-- If set to Void, `background_color` is used to fill.
			-- (from EV_DRAWABLE_IMP)

	transparent_color: detachable EV_COLOR
			-- Color used as transparent (Void by default).

	valid_code (c: INTEGER_32): BOOLEAN
			-- Is c a valid code to represent some kind of exceptions?
			-- (from EXCEP_CONST)

	Void_assigned_to_expanded: INTEGER_32 = 19
			-- Exception code for assignment of void value
			-- to expanded entity
			-- (from EXCEP_CONST)

	Void_call_target: INTEGER_32 = 1
			-- Exception code for feature applied to void reference
			-- (from EXCEP_CONST)

	Wel_rect: WEL_RECT
			-- Once access to an object of type WEL_RECT
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)

	Wel_string: WEL_STRING
			-- Once access to an object of type WEL_STRING
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)

	wel_string_from_string (s: READABLE_STRING_GENERAL): WEL_STRING
			-- Return a shared wel string set to s if
			-- s.count < `maximum_buffered_string_size`, otherwise
			-- return a new WEL_STRING object set to s.
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)
		require -- from WEL_SHARED_TEMPORARY_OBJECTS
			s_not_void: s /= Void

	wel_string_from_string_with_newline_conversion (s: READABLE_STRING_GENERAL): WEL_STRING
			-- Return a shared wel string set to s if
			-- s.count < `maximum_buffered_string_size`, otherwise
			-- return a new WEL_STRING object set to s.
			-- Make sure all lone '%N' characters are prepended with a carriage return '%R'.
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)
		require -- from WEL_SHARED_TEMPORARY_OBJECTS
			s_not_void: s /= Void

	wel_string_restricted (characters: INTEGER_32): WEL_STRING
			-- Return shared `wel_string` as Result if characters
			-- is less than `maximum_buffered_string_size`, otherwise return a
			-- new WEL_STRING object. This is used to prevent huge strings
			-- from being kept within a system.
			-- (from WEL_SHARED_TEMPORARY_OBJECTS)

	Whiteness: INTEGER_32 = 16711778
			-- Declared in Windows as WHITENESS
			-- (from WEL_RASTER_OPERATIONS_CONSTANTS)
	
feature -- Measurement

	dpi: NATURAL_32
			-- Window dpi.
			-- (from EV_POSITIONED_I)

	height: INTEGER_32
			-- Height of Current.

	width: INTEGER_32
			-- Width of Current.
	
feature -- Comparison

	frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			shallow_implies_deep: standard_equal (a, b) implies Result
			both_or_none_void: (a = Void) implies (Result = (b = Void))
			same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b))
			symmetric: Result implies deep_equal (b, a)

	frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b))

	frozen is_deep_equal alias "≡≡≡" (other: EV_PIXMAP_IMP_DRAWABLE): BOOLEAN
			-- Are Current and other attached to isomorphic object structures?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			shallow_implies_deep: standard_is_equal (other) implies Result
			same_type: Result implies same_type (other)
			symmetric: Result implies other.is_deep_equal (Current)

	is_equal (other: EV_PIXMAP_IMP_DRAWABLE): BOOLEAN
			-- Is other attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other ~ Current
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN
			-- Are a and b either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b))

	frozen standard_is_equal alias "≜" (other: EV_PIXMAP_IMP_DRAWABLE): BOOLEAN
			-- Is other attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	assertion_violation: BOOLEAN
			-- Is last exception originally due to a violated
			-- assertion or non-decreasing variant?
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	exception_class_name: detachable STRING_8
			-- Name of the class that includes the recipient
			-- of original form of last exception
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	closest_dockable_target: detachable EV_DOCKABLE_TARGET
			-- Result is first dockable target that `is_dockable` found by recursively
			-- searching up through the parenting structure from the widget
			-- currently underneath the pointer position.
			-- Result will be Void if a dockable target is not found.
			-- (from EV_DOCKABLE_SOURCE_I)
		ensure -- from EV_DOCKABLE_SOURCE_I
			result_is_dockable: Result /= Void implies Result.is_docking_enabled

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of other (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	developer_exception_name: detachable STRING_8
			-- Name of last developer-raised exception
			-- (from EXCEPTIONS)
		require -- from EXCEPTIONS
			applicable: is_developer_exception
		ensure -- from EXCEPTIONS
			instance_free: class

	exception: INTEGER_32
			-- Code of last exception that occurred
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	exception_trace: detachable STRING_8
			-- String representation of the exception trace
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	foreground_window: detachable WEL_WINDOW
			-- Foreground window (window with focus)
			-- (from WEL_WINDOWS_ROUTINES)

	get_next_target (a_widget: EV_WIDGET): detachable EV_DOCKABLE_TARGET
			-- Result is next dockable target that is `is_dockable` found by
			-- recursively seraching up the parenting structure from current_target.
			-- Result will be Void if none.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			a_widget_not_void: a_widget /= Void
		ensure -- from EV_DOCKABLE_SOURCE_I
			result_is_dockable: Result /= Void implies Result.is_docking_enabled

	internal_non_sensitive: BOOLEAN
			-- Is Current not sensitive to input as seen
			-- from `interface`?
			-- (from EV_SENSITIVE_I)

	is_destroyed: BOOLEAN
			-- Is Current no longer usable?
			-- (from EV_ANY_I)

	is_developer_exception: BOOLEAN
			-- Is the last exception originally due to
			-- a developer exception?
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	is_developer_exception_of_name (name: detachable STRING_8): BOOLEAN
			-- Is the last exception originally due to a developer
			-- exception of name name?
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	is_signal: BOOLEAN
			-- Is last exception originally due to an external
			-- event (operating system signal)?
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	is_system_exception: BOOLEAN
			-- Is last exception originally due to an
			-- external event (operating system error)?
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	is_terminal_service: BOOLEAN
			-- If window in terminal service (Remote Desktop)?
			-- (from WEL_WINDOWS_ROUTINES)
		require -- from WEL_WINDOWS_ROUTINES
			after_2000: (create {WEL_WINDOWS_VERSION} end).is_windows_2000_compatible

	is_transport_enabled: BOOLEAN
			-- Is the transport mechanism enabled?
			-- (from EV_PICK_AND_DROPABLE_I)

	is_window (hwnd: POINTER): BOOLEAN
			-- Does hwnd point to a valid Window?
			-- (from WEL_WINDOWS_ROUTINES)

	key_down (virtual_key: INTEGER_32): BOOLEAN
			--Is 'virtual' key pressed
			-- (from WEL_WINDOWS_ROUTINES)

	key_locked (virtual_key: INTEGER_32): BOOLEAN
			--Is 'virtual' key locked
			-- (from WEL_WINDOWS_ROUTINES)

	key_to_string (key_data: INTEGER_32): STRING_32
			-- Give the string associated with the key given by
			-- virtual_key.
			-- (from WEL_WINDOWS_ROUTINES)

	meaning (except: INTEGER_32): detachable STRING_8
			-- A message in English describing what except is
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	mode_is_configurable_target_menu: BOOLEAN
			-- Is the transport mechanism a configurable target menu?
			-- (from EV_PICK_AND_DROPABLE_I)

	mode_is_drag_and_drop: BOOLEAN
			-- Is the transport mechanism drag and drop?
			-- (from EV_PICK_AND_DROPABLE_I)

	mode_is_pick_and_drop: BOOLEAN
			-- Is the transport mechanism pick and drop?
			-- (from EV_PICK_AND_DROPABLE_I)

	mode_is_target_menu: BOOLEAN
			-- Is the transport mechanism a target menu?
			-- (from EV_PICK_AND_DROPABLE_I)

	original_class_name: detachable STRING_8
			-- Name of the class that includes the recipient
			-- of original form of last exception
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	original_exception: INTEGER_32
			-- Original code of last exception that triggered
			-- current exception
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	original_recipient_name: detachable STRING_8
			-- Name of the routine whose execution was
			-- interrupted by original form of last exception
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	original_tag_name: detachable STRING_8
			-- Assertion tag for original form of last
			-- assertion violation.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	recipient_name: detachable STRING_8
			-- Name of the routine whose execution was
			-- interrupted by last exception
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of other?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))

	system_directory: STRING_32
			-- Path of the Windows system directory
			-- (from WEL_WINDOWS_ROUTINES)
		ensure -- from WEL_WINDOWS_ROUTINES
			result_not_void: Result /= Void

	tag_name: detachable STRING_8
			-- Tag of last violated assertion clause
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	tick_count: INTEGER_32
			-- Number of milliseconds that have
			-- elapsed since Windows was started.
			-- (from WEL_WINDOWS_ROUTINES)
		ensure -- from WEL_WINDOWS_ROUTINES
			positive_result: Result >= 0

	user_is_sensitive: BOOLEAN
			-- Is the object sensitive to user input.
			-- (from EV_SENSITIVE_I)

	valid_color_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid color constant?
			-- (from WEL_COLOR_CONSTANTS)

	valid_dib_colors_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid dib colors constant?
			-- (from WEL_DIB_COLORS_CONSTANTS)

	valid_htext_alignment_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid text alignment constant for horizontal positioning?
			-- (from WEL_TA_CONSTANTS)

	valid_rop2_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid rop2 constant?
			-- (from WEL_ROP2_CONSTANTS)

	valid_text_alignment_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid text alignment constant?
			-- (from WEL_TA_CONSTANTS)

	valid_vtext_alignment_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid text alignment constant for vertical positioning?
			-- (from WEL_TA_CONSTANTS)

	window_of_item (hwnd: POINTER): detachable WEL_WINDOW
			-- Retrieve Eiffel object associated with hwnd pointer.
			-- (from WEL_WINDOWS_ROUTINES)
		require -- from WEL_WINDOWS_ROUTINES
			hwnd_not_null: hwnd /= default_pointer
			is_window_pointer: is_window (hwnd)
		ensure -- from WEL_WINDOWS_ROUTINES
			is_wel_window: Result /= Void end implies (create {INTERNAL} end).type_conforms_to ((create {INTERNAL} end).dynamic_type (Result), (create {INTERNAL} end).dynamic_type_from_string ("WEL_WINDOW"))
			is_proper_wel_window: Result /= Void implies Result.item = hwnd

	windows_directory: STRING_32
			-- Path of the Windows directory
			-- (from WEL_WINDOWS_ROUTINES)
		ensure -- from WEL_WINDOWS_ROUTINES
			result_not_void: Result /= Void
	
feature -- Status setting

	catch (code: INTEGER_32)
			-- Make sure that any exception of code code will be
			-- caught. This is the default.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	die (code: INTEGER_32)
			-- Terminate execution with exit status code,
			-- without triggering an exception.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			False
			instance_free: class

	disable_dockable
			-- Ensure Current is not dockable
			-- (from EV_DOCKABLE_SOURCE_I)
		ensure -- from EV_DOCKABLE_SOURCE_I
			not_is_dockable: not is_dockable

	disable_external_docking
			-- Forbid Current to be docked into an EV_DOCKABLE_DIALOG
			-- When there is no valid EV_DRAGABLE_TARGET upon completion
			-- of the transport?
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			is_dockable: is_dockable
		ensure -- from EV_DOCKABLE_SOURCE_I
			not_externally_dockable: not is_external_docking_enabled

	disable_external_docking_relative
			-- Assign False to `is_external_docking_relative`, ensuring that
			-- a dockable dialog displayed when Current is docked externally
			-- is displayed as a standard window.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			external_docking_enabled: is_external_docking_enabled
		ensure -- from EV_DOCKABLE_SOURCE_I
			external_docking_not_relative: not is_external_docking_relative

	disable_pebble_positioning
			-- Assign False to `pebble_positioning_enabled`.
			-- (from EV_PICK_AND_DROPABLE_I)

	enable_dockable
			-- Allow Current to be dockable
			-- (from EV_DOCKABLE_SOURCE_I)
		ensure -- from EV_DOCKABLE_SOURCE_I
			is_dockable: is_dockable

	enable_external_docking
			-- Allow Current to be docked into an EV_DOCKABLE_DIALOG
			-- When there is no valid EV_DRAGABLE_TARGET upon completion
			-- of the transport?
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			is_dockable: is_dockable
		ensure -- from EV_DOCKABLE_SOURCE_I
			is_externally_dockable: is_external_docking_enabled

	enable_external_docking_relative
			-- Assign True to `is_external_docking_relative`, ensuring that
			-- a dockable dialog displayed when Current is docked externally
			-- is displayed relative to the top level window.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			external_docking_enabled: is_external_docking_enabled
		ensure -- from EV_DOCKABLE_SOURCE_I
			external_docking_not_relative: is_external_docking_relative

	enable_pebble_positioning
			-- Assign True to `pebble_positioning_enabled`.
			-- (from EV_PICK_AND_DROPABLE_I)

	ignore (code: INTEGER_32)
			-- Make sure that any exception of code code will be
			-- ignored. This is not the default.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	message_on_failure
			-- Print an exception history table
			-- in case of failure.
			-- This is the default.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	no_message_on_failure
			-- Do not print an exception history table
			-- in case of failure.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	exception_raise (name: detachable READABLE_STRING_GENERAL)
			-- Raise a developer exception of name name.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	raise_retrieval_exception (name: detachable READABLE_STRING_GENERAL)
			-- Raise a retrieval exception of name name.
			-- (from EXCEPTIONS)
		ensure -- from EXCEPTIONS
			instance_free: class

	remove_default_key_processing_handler
			-- Ensure `default_key_processing_handler` is Void.
			-- (from EV_WIDGET_I)
		ensure -- from EV_WIDGET_I
			default_key_processing_handler_removed: default_key_processing_handler = Void

	remove_pebble
			-- Remove `pebble`.
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			pebble_removed: pebble = Void and pebble_function = Void
			is_transport_disabled: not is_transport_enabled

	remove_real_source
			-- Ensure `real_source` is Void.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			is_dockable: is_dockable
		ensure -- from EV_DOCKABLE_SOURCE_I
			real_source_void: real_source = Void

	remove_real_target
			-- Ensure `real_target` is Void.
			-- (from EV_WIDGET_I)
		ensure -- from EV_WIDGET_I
			real_target_void: real_target = Void

	reset_for_buffering (a_width, a_height: INTEGER_32)
			-- Resets the size of the pixmap without keeping original image or clearing background.
		require -- from EV_PIXMAP_I
			width_valid: a_width > 0
			height_valid: a_height > 0

	reset_pebble_function
			-- Reset any values created by calling `pebble_function`.
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			pebble_function_preserved: pebble_function = old pebble_function
			pebble_without_function: pebble_function = Void implies (pebble = old pebble)
			pebble_with_function: pebble_function /= Void implies pebble = Void

	set_accept_cursor (a_cursor: like accept_cursor)
			-- Set a_cursor to be displayed when the screen pointer is over a
			-- target that accepts `pebble` during pick and drop.
			-- (from EV_PICK_AND_DROPABLE_I)

	set_configurable_target_menu_handler (a_handler: like configurable_target_menu_handler)
			-- Set Configurable Target Menu Handler to a_handler.
			-- (from EV_PICK_AND_DROPABLE_I)

	set_configurable_target_menu_mode
			-- Set transport mechanism to a configurable target_menu.
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			mode_is_target_menu: mode_is_configurable_target_menu

	set_default_font
			-- Make system to use default font.
			-- (from EV_FONTABLE_IMP)

	set_default_key_processing_handler (a_handler: like default_key_processing_handler)
			-- Assign `default_key_processing_handler` to a_handler.
			-- (from EV_WIDGET_I)

	set_deny_cursor (a_cursor: like deny_cursor)
			-- Set a_cursor to be displayed when the screen pointer is over a
			-- target that doesn't accept `pebble` during pick and drop.
			-- (from EV_PICK_AND_DROPABLE_I)

	set_drag_and_drop_mode
			-- Set transport mechanism to drag and drop,
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			mode_is_drag_and_drop: mode_is_drag_and_drop

	set_pebble_function (a_function: FUNCTION [detachable ANY])
			-- Assign a_function to `pebble_function`.
			-- (from EV_PICK_AND_DROPABLE_I)
		require -- from EV_PICK_AND_DROPABLE_I
			a_function_not_void: a_function /= Void
		ensure -- from EV_PICK_AND_DROPABLE_I
			pebble_function_assigned: pebble_function = a_function
			is_transport_enabled: is_transport_enabled

	set_pebble_position (a_x, a_y: INTEGER_32)
			-- Set the initial position for pick and drop relative to Current.
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			pick_x_assigned: pick_x.to_integer_32 = a_x
			pick_y_assigned: pick_y.to_integer_32 = a_y

	set_pick_and_drop_mode
			-- Set transport mechanism to pick and drop,
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			mode_is_pick_and_drop: mode_is_pick_and_drop

	set_real_source (dockable_source: EV_DOCKABLE_SOURCE)
			-- Set dockable_source to be the widget moved when a
			-- drag begins on Current.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			is_dockable: is_dockable
			dockable_source_not_void: dockable_source /= Void
		ensure -- from EV_DOCKABLE_SOURCE_I
			real_source_assigned: real_source = dockable_source

	set_real_target (a_target: EV_DOCKABLE_TARGET)
			-- Assign a_target to `real_target`.
			-- (from EV_WIDGET_I)
		require -- from EV_WIDGET_I
			target_not_void: a_target /= Void
		ensure -- from EV_WIDGET_I
			assigned: real_target = a_target

	set_size (new_width, new_height: INTEGER_32)
			-- Resize the current bitmap. If the new size
			-- is smaller than the old one, the bitmap is
			-- clipped.
		require -- from EV_PIXMAP_I
			x_coordinate_valid: new_width > 0
			y_coordinate_valid: new_height > 0

	set_target_menu_mode
			-- Set transport mechanism to a target_menu.
			-- (from EV_PICK_AND_DROPABLE_I)
		ensure -- from EV_PICK_AND_DROPABLE_I
			mode_is_target_menu: mode_is_target_menu

	show_configurable_target_menu (a_x, a_y: INTEGER_32)
			-- Show the configurable target menu at position a_x, a_y relative to Current.
			-- (from EV_PICK_AND_DROPABLE_I)

	stretch (new_width, new_height: INTEGER_32)
			-- Stretch the image to fit in size
			-- new_width by new_height.
		require -- from EV_PIXMAP_I
			x_coordinate_valid: new_width > 0
			y_coordinate_valid: new_height > 0

	user_disable_sensitive
			-- Make object desensitive to user input.
			-- (from EV_SENSITIVE_I)
		ensure -- from EV_SENSITIVE_I
			is_desensitive: not user_is_sensitive

	user_enable_sensitive
			-- Make object sensitive to user input.
			-- (from EV_SENSITIVE_I)
		ensure -- from EV_SENSITIVE_I
			is_sensitive_if_parent_sensitive: (has_parent and then parent_is_sensitive) implies attached_interface.implementation.is_sensitive
			is_sensitive_if_orphaned: not has_parent implies attached_interface.implementation.is_sensitive
	
feature -- Element change

	disable_dashed_line_style
			-- Draw lines solid.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
		ensure -- from EV_DRAWABLE_I
			dashed_line_style_disabled: is_usable implies not attached_interface.dashed_line_style

	enable_dashed_line_style
			-- Draw lines dashed.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
		ensure -- from EV_DRAWABLE_I
			dashed_line_style_enabled: is_usable implies attached_interface.dashed_line_style

	remove_clipping
			-- Do not apply any clipping.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
		ensure -- from EV_DRAWABLE_I
			clip_area_void: is_usable implies attached_interface.clip_area = Void

	remove_help_context
			-- Remove key press action associated with EV_APPLICATION.help_key.
			-- (from EV_HELP_CONTEXTABLE_I)
		require -- from EV_HELP_CONTEXTABLE_I
			help_context_not_void: help_context /= Void
		ensure -- from EV_HELP_CONTEXTABLE_I
			no_help_context: internal_help_context = Void

	remove_tile
			-- Do not apply a tile when filling.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
		ensure -- from EV_DRAWABLE_I
			tile_void: is_usable implies attached_interface.tile = Void

	set_background_color (a_color: EV_COLOR)
			-- Assign a_color to `background_color`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_COLORIZABLE_I
			a_color_not_void: a_color /= Void
		ensure -- from EV_COLORIZABLE_I
			background_color_assigned: is_initialized implies background_color.is_equal (a_color)

	set_clip_area (an_area: EV_RECTANGLE)
			-- Set an area to clip to.
			-- Set to Void when no clipping should be applied.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			an_area_not_void: an_area /= Void
		ensure -- from EV_DRAWABLE_I
			clip_area_assigned: is_usable implies attached attached_interface.clip_area as l_clip_area and then an_area.is_equal (l_clip_area)

	set_clip_region (a_region: EV_REGION)
			-- Set an area to clip to.
			-- Set to Void when no clipping should be applied.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_region_not_void: a_region /= Void

	set_drawing_mode (a_mode: INTEGER_32)
			-- Set drawing mode to a_mode.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_mode_valid: valid_drawing_mode (a_mode)
		ensure -- from EV_DRAWABLE_I
			drawing_mode_assigned: is_usable implies attached_interface.drawing_mode = a_mode

	set_font (a_font: EV_FONT)
			-- Set `font` to a_font.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_FONTABLE_I
			a_font_not_void: a_font /= Void
		ensure -- from EV_FONTABLE_I
			assigned: is_usable implies font.is_equal (a_font)

	set_foreground_color (a_color: EV_COLOR)
			-- Assign a_color to `foreground_color`
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_COLORIZABLE_I
			a_color_not_void: a_color /= Void
		ensure -- from EV_COLORIZABLE_I
			foreground_color_assigned: is_initialized implies foreground_color.is_equal (a_color)

	set_help_context (an_help_context: like help_context)
			-- Assign a_help_context to `help_context`.
			-- Assign an_help_context to `help_context`.
			-- (from EV_HELP_CONTEXTABLE_I)
		require -- from EV_HELP_CONTEXTABLE_I
			an_help_context_not_void: an_help_context /= Void
		ensure -- from EV_HELP_CONTEXTABLE_I
			help_context_assigned: attached help_context as l_help_context and then l_help_context ~ an_help_context

	set_line_width (a_width: INTEGER_32)
			-- Assign a_width to `line_width`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_width_positive_or_zero: a_width >= 0
		ensure -- from EV_DRAWABLE_I
			line_width_assigned: is_usable implies attached_interface.line_width = a_width

	set_mask (a_mask: EV_BITMAP)
			-- Set bitmap mask of Current to a_mask.
		require -- from EV_PIXMAP_I
			mask_not_void: a_mask /= Void
			mask_same_dimensions: a_mask.width = width and then a_mask.height = height

	set_tile (a_pixmap: EV_PIXMAP)
			-- Set tile used to fill figures.
			-- Set to Void to use `background_color` to fill.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_pixmap_not_void: a_pixmap /= Void
		ensure -- from EV_DRAWABLE_I
			tile_assigned: is_usable implies attached_interface.tile /= Void

	set_transparent_color (value: EV_COLOR)
			-- Make value the new transparent color.
	
feature -- Duplication

	copy (other: EV_PIXMAP_IMP_DRAWABLE)
			-- Update current object using fields of object attached
			-- to other, so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: Current ~ other

	copy_pixmap (other_interface: EV_PIXMAP)
			-- Update Current to have same appearence as other_interface.
			-- (So as to satisfy `is_equal`.)

	frozen deep_copy (other: EV_PIXMAP_IMP_DRAWABLE)
			-- Effect equivalent to that of:
			--		`copy` (other . `deep_twin`)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: EV_PIXMAP_IMP_DRAWABLE
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_twin_not_void: Result /= Void
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: EV_PIXMAP_IMP_DRAWABLE)
			-- Copy every field of other onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: EV_PIXMAP_IMP_DRAWABLE
			-- New object field-by-field identical to other.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: EV_PIXMAP_IMP_DRAWABLE
			-- New object equal to Current
			-- `twin` calls `copy`; to change copying/twinning semantics, redefine `copy`.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result ~ Current
	
feature -- Basic operations

	close_dockable_dialog (dockable_dialog: EV_DOCKABLE_DIALOG)
			-- Close request received by dockable_dialog so
			-- restore widget contained back to its original position
			-- in its old parent if possible.
			-- We must fire dock_ended actions.
			-- (from EV_DOCKABLE_SOURCE_I)
		ensure -- from EV_DOCKABLE_SOURCE_I
			dockable_dialog_destroyed: dockable_dialog.is_destroyed

	complete_dock
			-- Complete a dock from `source_being_docked`.
			-- (from EV_DOCKABLE_SOURCE_I)
		require -- from EV_DOCKABLE_SOURCE_I
			source_being_docked: source_being_docked /= Void
		ensure -- from EV_DOCKABLE_SOURCE_I
			not_dock_executing: not is_dock_executing
			insert_separator_not_parented: Insert_sep.parent = Void
			insert_label_not_parented: Insert_label.parent = Void

	cwin_hi_word (value: POINTER): INTEGER_32
			-- SDK HIWORD
			-- (from WEL_WORD_OPERATIONS)

	cwin_lo_word (value: POINTER): INTEGER_32
			-- SDK LOWORD
			-- (from WEL_WORD_OPERATIONS)

	cwin_make_long (low, high: INTEGER_32): POINTER
			-- SDK MAKELONG
			-- (from WEL_WORD_OPERATIONS)

	cwin_make_lparam (low, high: INTEGER_32): POINTER
			-- SKD MAKELPARAM
			-- (from WEL_WORD_OPERATIONS)

	frozen default: detachable EV_PIXMAP_IMP_DRAWABLE
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type POINTER
			-- (Avoid the need to write p.`default` for
			-- some p of type POINTER.)
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	eif_current_object_id: INTEGER_32
			-- New identifier for Current
			-- (from IDENTIFIED_ROUTINES)
		ensure -- from IDENTIFIED_ROUTINES
			eif_current_object_id: Result > 0
			inserted: eif_is_object_id_of_current (Result)

	eif_id_any_object (an_id: INTEGER_32): detachable ANY
			-- Object associated with an_id
			-- (from IDENTIFIED_ROUTINES)
		require -- from IDENTIFIED_ROUTINES
			an_id_non_negative: an_id >= 0
		ensure -- from IDENTIFIED_ROUTINES
			instance_free: class

	eif_is_object_id_of_current (an_id: INTEGER_32): BOOLEAN
			-- Is an_id the associated object ID of Current.
			-- (from IDENTIFIED_ROUTINES)
		require -- from IDENTIFIED_ROUTINES
			an_id_non_negative: an_id >= 0

	eif_object_id (an_object: ANY): INTEGER_32
			-- New identifier for an_object
			-- (from IDENTIFIED_ROUTINES)
		ensure -- from IDENTIFIED_ROUTINES
			instance_free: class
			eif_object_id_positive: Result > 0
			inserted: eif_id_any_object (Result) = an_object

	eif_object_id_free (an_id: INTEGER_32)
			-- Free the entry an_id
			-- (from IDENTIFIED_ROUTINES)
		require -- from IDENTIFIED_ROUTINES
			an_id_non_negative: an_id >= 0
		ensure -- from IDENTIFIED_ROUTINES
			instance_free: class
			removed: eif_id_any_object (an_id) = Void

	flush
			-- Execute any delayed calls to `expose_actions` without waiting
			-- for next idle.
			-- (from EV_PIXMAP_I)

	hide_cursor
			-- Hide the cursor.
			-- (from WEL_WINDOWS_ROUTINES)

	message_beep_asterisk
			-- Play the system asterisk waveform sound.
			-- (from WEL_WINDOWS_ROUTINES)

	message_beep_exclamation
			-- Play the system exclamation waveform sound.
			-- (from WEL_WINDOWS_ROUTINES)

	message_beep_hand
			-- Play the system hand waveform sound.
			-- (from WEL_WINDOWS_ROUTINES)

	message_beep_ok
			-- Play the system ok waveform sound.
			-- (from WEL_WINDOWS_ROUTINES)

	message_beep_question
			-- Play the system question waveform sound.
			-- (from WEL_WINDOWS_ROUTINES)

	output_debug_string (s: READABLE_STRING_GENERAL)
			-- Send a string s to the system debugger.
			-- (from WEL_WINDOWS_ROUTINES)
		require -- from WEL_WINDOWS_ROUTINES
			s_not_void: s /= Void

	resource_string_id (an_id: INTEGER_32): STRING_32
			-- String identified by an_id in the resource file.
			-- (from WEL_WINDOWS_ROUTINES)
		ensure -- from WEL_WINDOWS_ROUTINES
			result_not_void: Result /= Void

	set_cursor_position_absolute (x, y: INTEGER_32)
			-- Set the cursor position to x, y.
			-- (from WEL_WINDOWS_ROUTINES)

	show_cursor
			-- Show the cursor.
			-- (from WEL_WINDOWS_ROUTINES)
	
feature -- Inapplicable

	Drag_cursor: EV_POINTER_STYLE
			-- Cursor used when Current is being transported.
			-- (from EV_DOCKABLE_SOURCE_I)
	
feature 

	Allocated_brushes: EV_GDI_ALLOCATED_BRUSHES
			-- (from EV_SHARED_GDI_OBJECTS)

	Allocated_pens: EV_GDI_ALLOCATED_PENS
			-- (from EV_SHARED_GDI_OBJECTS)
	
feature -- Access (Basic style constants)

	Ps_dash: INTEGER_32 = 1
			-- (from WEL_PS_CONSTANTS)

	Ps_dashdot: INTEGER_32 = 3
			-- (from WEL_PS_CONSTANTS)

	Ps_dashdotdot: INTEGER_32 = 4
			-- (from WEL_PS_CONSTANTS)

	Ps_dot: INTEGER_32 = 2
			-- (from WEL_PS_CONSTANTS)

	Ps_insideframe: INTEGER_32 = 6
			-- Mutually exclusive pen style constants.
			-- (from WEL_PS_CONSTANTS)

	Ps_null: INTEGER_32 = 5
			-- (from WEL_PS_CONSTANTS)

	Ps_solid: INTEGER_32 = 0
			-- (from WEL_PS_CONSTANTS)
	
feature -- Access (Extended Style constants for use in conjunction with {WEL_PEN}.make_from_brush)

	Ps_alternate: INTEGER_32 = 8
			-- Mutually exclusive pen style constants.
			-- (from WEL_PS_CONSTANTS)

	Ps_cosmetic: INTEGER_32 = 0
			-- (from WEL_PS_CONSTANTS)

	Ps_endcap_flat: INTEGER_32 = 512
			-- Ps_geometric style constants.
			-- (from WEL_PS_CONSTANTS)

	Ps_endcap_round: INTEGER_32 = 0
			-- (from WEL_PS_CONSTANTS)

	Ps_endcap_square: INTEGER_32 = 256
			-- (from WEL_PS_CONSTANTS)

	Ps_geometric: INTEGER_32 = 65536
			-- Brush type style constants
			-- (from WEL_PS_CONSTANTS)

	Ps_join_bevel: INTEGER_32 = 4096
			-- (from WEL_PS_CONSTANTS)

	Ps_join_miter: INTEGER_32 = 8192
			-- (from WEL_PS_CONSTANTS)

	Ps_join_round: INTEGER_32 = 0
			-- (from WEL_PS_CONSTANTS)

	Ps_userstyle: INTEGER_32 = 7
			-- (from WEL_PS_CONSTANTS)
	
feature -- Access EV_DRAGABLE_SOURCE.

	dockable_dialog_target: detachable EV_DOCKABLE_DIALOG
			-- A dockable dialog that will be created as
			-- necessary. This is not a local, to avoid it
			-- being garbage collected.
			-- (from EV_SHARED_TRANSPORT_I)

	Global_drag_targets: ARRAYED_LIST [INTEGER_32]
			-- Shortcut to EV_APPLICATION.pnd_targets.
			-- (from EV_SHARED_TRANSPORT_I)

	frozen Insert_label: EV_CELL
			-- Label used to indicate where Current will be placed in target.
			-- (from EV_SHARED_TRANSPORT_I)
		ensure -- from EV_SHARED_TRANSPORT_I
			result_not_void: Result /= Void

	Insert_label_imp: EV_CELL_I
			-- Once access to implementation of `insert_label`.
			-- (from EV_SHARED_TRANSPORT_I)
		ensure -- from EV_SHARED_TRANSPORT_I
			Result /= Void

	Insert_sep: EV_TOOL_BAR_SEPARATOR
			-- Once access to a separator used to indicate the insertion position
			-- when moving tool bar items.
			-- (from EV_SHARED_TRANSPORT_I)

	Insert_sep_imp: EV_TOOL_BAR_SEPARATOR_I
			-- Once access to implementation of `insert_sep`.
			-- (from EV_SHARED_TRANSPORT_I)
		ensure -- from EV_SHARED_TRANSPORT_I
			Result /= Void

	Internal_screen: EV_SCREEN
			-- Once access to an EV_SCREEN.
			-- (from EV_SHARED_TRANSPORT_I)

	original_x_offset: INTEGER_16
			-- Original x_offset and original_y_offset of transport
			-- realtive to widget. Only used for dragable transports.
			-- (from EV_SHARED_TRANSPORT_I)

	original_y_offset: INTEGER_16
			-- Original x_offset and original_y_offset of transport
			-- realtive to widget. Only used for dragable transports.
			-- (from EV_SHARED_TRANSPORT_I)

	originating_source: detachable EV_DOCKABLE_SOURCE_I
			-- Dragable source that originated the transport of source_being_dragged.
			-- (from EV_SHARED_TRANSPORT_I)

	remove_insert_label
			-- Remove `insert_label` from its current `parent`.
			-- We must handle a special case for cells. If the parent is a cell,
			-- then we remove the cell from its parent, and then restore it.
			-- Otherwise, when the label, removed, the cell keeps it size, and cells
			-- are normally used with `real_target` when the cell must
			-- not be visible.
			-- (from EV_SHARED_TRANSPORT_I)
		ensure -- from EV_SHARED_TRANSPORT_I
			not_parented: Insert_label.parent = Void

	remove_insert_sep
			-- Ensure inset_sep is not parented.
			-- (from EV_SHARED_TRANSPORT_I)
		ensure -- from EV_SHARED_TRANSPORT_I
			not_parented: Insert_sep.parent = Void

	source_being_docked: detachable EV_DOCKABLE_SOURCE_I
			-- Dragable source currently being transported. May be a
			-- WIDGET_IMP or an EV_TOOL_BAR_BUTTON_IMP.
			-- (from EV_SHARED_TRANSPORT_I)
	
feature -- Access EV_PICK_AND_DROPABLE.

	Default_accept_cursor: EV_POINTER_STYLE
			-- Used in lieu of a user defined `accept_cursor`.
			-- (from EV_SHARED_TRANSPORT_I)

	Default_deny_cursor: EV_POINTER_STYLE
			-- Used in lieu of a user defined `deny_cursor`.
			-- (from EV_SHARED_TRANSPORT_I)

	Default_pixmaps: EV_STOCK_PIXMAPS
			-- Default pixmaps
			-- (from EV_SHARED_TRANSPORT_I)

	Global_pnd_targets: HASH_TABLE [INTEGER_32, INTEGER_32]
			-- Shortcut to EV_APPLICATION.pnd_targets.
			-- (from EV_SHARED_TRANSPORT_I)

	rubber_band_is_drawn: BOOLEAN
			-- Is a rubber band line currently on the screen?
			-- (from EV_SHARED_TRANSPORT_I)
	
feature -- Access common.

	pointer_x: INTEGER_16
			-- (from EV_SHARED_TRANSPORT_I)

	pointer_y: INTEGER_16
			-- (from EV_SHARED_TRANSPORT_I)
	
feature -- Clearing and drawing operations

	clear
			-- Erase Current with `background_color`.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True

	clear_rectangle (x1, y1, a_width, a_height: INTEGER_32)
			-- Draw rectangle with upper-left corner on (x, y)
			-- with size a_width and a_height in `background_color`.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
	
feature -- Constants

	Drawing_mode_and: INTEGER_32 = 3
			-- Drawing mode where bitwise AND is performed when a
			-- pixel is drawn.
			--
			-- T\S | 0 | 1 |
			-- -------------
			--   0 | 0 | 0 |
			-- -------------
			--   1 | 0 | 1 |
			-- (from EV_DRAWABLE_CONSTANTS)

	Drawing_mode_copy: INTEGER_32 = 0
			-- Normal drawing mode.
			--
			-- T\S | 0 | 1 |
			-- -------------
			--   0 | 0 | 1 |
			-- -------------
			--   1 | 0 | 1 |
			-- (from EV_DRAWABLE_CONSTANTS)

	Drawing_mode_invert: INTEGER_32 = 2
			-- Drawing mode where bits are inverted before drawn.
			--
			-- T\S | 0 | 1 |
			-- -------------
			--   0 | 1 | 0 |
			-- -------------
			--   1 | 1 | 0 |
			-- (from EV_DRAWABLE_CONSTANTS)

	Drawing_mode_or: INTEGER_32 = 4
			-- Drawing mode where bitwise OR is performed when a
			-- pixel is drawn.
			--
			-- T\S | 0 | 1 |
			-- -------------
			--   0 | 0 | 1 |
			-- -------------
			--   1 | 1 | 1 |
			-- (from EV_DRAWABLE_CONSTANTS)

	Drawing_mode_xor: INTEGER_32 = 1
			-- Drawing mode where bitwise XOR is performed when a
			-- pixel is drawn.
			--
			-- T\S | 0 | 1 |
			-- -------------
			--   0 | 0 | 1 |
			-- -------------
			--   1 | 1 | 0 |
			-- (from EV_DRAWABLE_CONSTANTS)
	
feature -- Contract Support

	valid_extended_pen_style (c: INTEGER_32): BOOLEAN
			-- Is c a valid style constant when used in conjunction with a WEL_LOG_BRUSH.
			-- (from WEL_PS_CONSTANTS)

	valid_pen_style_constant (c: INTEGER_32): BOOLEAN
			-- Is c a valid pen style constant?
			-- Only valid for non-extended pen creation.
			-- (from WEL_PS_CONSTANTS)
	
feature -- Contract support

	valid_drawing_mode (a_mode: INTEGER_32): BOOLEAN
			-- Is a_mode a valid drawing mode?
			-- (from EV_DRAWABLE_CONSTANTS)
	
feature -- Conversion from Eiffel to Windows

	frozen to_lparam (i: INTEGER_32): POINTER
			-- Convert integer value i in a valid LPARAM value.
			-- (from WEL_DATA_TYPE)
		ensure -- from WEL_DATA_TYPE
			is_class: class

	frozen to_lresult (i: INTEGER_32): POINTER
			-- Convert integer value i in a valid LRESULT value.
			-- (from WEL_DATA_TYPE)
		ensure -- from WEL_DATA_TYPE
			is_class: class

	frozen to_wparam (i: INTEGER_32): POINTER
			-- Convert integer value i in a valid WPARAM value.
			-- (from WEL_DATA_TYPE)
		ensure -- from WEL_DATA_TYPE
			is_class: class
	
feature -- Delegated features

	disable_capture
			-- Ungrab the user input.

	disable_sensitive
			-- Disable sensitivity to user input events.

	disable_transport
			-- Deactivate pick/drag and drop mechanism.
		ensure -- from EV_PICK_AND_DROPABLE_I
			is_transport_disabled: not is_transport_enabled

	draw_rubber_band
			-- Erase previously drawn rubber band.
			-- Draw a rubber band between initial pick point and cursor.

	enable_capture
			-- Grab the user input.

	enable_sensitive
			-- Enable sensitivity to user input events.

	enable_transport
			-- Activate pick/drag and drop mechanism.
		require -- from EV_PICK_AND_DROPABLE_I
			pebble_not_void: pebble /= Void or pebble_function /= Void
		ensure -- from EV_PICK_AND_DROPABLE_I
			is_transport_enabled: is_transport_enabled

	end_transport (a_x: INTEGER_32; a_y: INTEGER_32; a_button: INTEGER_32; a_x_tilt, a_y_tilt, a_pressure: REAL_64; a_screen_x, a_screen_y: INTEGER_32)
			-- Terminate the pick and drop mechanism.

	erase_rubber_band
			-- Erase previously drawn rubber band.

	has_capture: BOOLEAN
			-- Does widget have capture?

	has_focus: BOOLEAN
			-- Does widget have the keyboard focus?

	has_parent: BOOLEAN

	hide
			-- Request that Current not be displayed when its parent is.

	internal_disable_dockable
			-- Platform specific implementation of disable_drag.
			-- Does nothing in this implementation.

	internal_enable_dockable
			-- Platform specific implementation of enable_drag.
			-- Does nothing in this implementation.

	internal_set_pointer_style (c: EV_POINTER_STYLE)
			-- Assign c to cursor pixmap.
			-- Only called from implementation.

	is_displayed: BOOLEAN
			-- Is Current visible on the screen?
			-- False if Current is entirely obscured by another window.

	is_sensitive: BOOLEAN
			-- Does Current respond to user input events.

	is_show_requested: BOOLEAN
			-- Will Current be displayed when its parent is?
			-- See also `is_displayed`.

	minimum_height: INTEGER_32
			-- Minimum vertical size in pixels of Current.

	minimum_width: INTEGER_32
			-- Minimum horizontal size in pixels Current.

	on_parented
			-- Current has just been added to a container
		require -- from EV_WIDGET_I
			parent_void: parent = Void
		ensure -- from EV_WIDGET_I
			parent_void: parent = Void

	parent: detachable EV_CONTAINER
			-- Container widget that contains Current.
			-- (Void if Current is not in a container)

	parent_is_sensitive: BOOLEAN

	pointer_position: EV_COORDINATE
			-- Position of the screen pointer relative to Current.
		ensure -- from EV_WIDGET_I
			result_not_void: Result /= Void

	pointer_style: detachable EV_POINTER_STYLE
			-- Cursor displayed when screen pointer is over Current.

	real_pointed_target: detachable EV_PICK_AND_DROPABLE
			-- Target at mouse position

	redraw
			-- Force Current to redraw itself.

	reset_minimum_height
			-- Reset the minimum height.

	reset_minimum_size
			-- Reset the minimum size (width and height).

	reset_minimum_width
			-- Reset the minimum width.

	screen_x: INTEGER_32
			-- Horizontal offset relative to screen in pixels.
		require -- from  EV_POSITIONED_I
			True

	screen_y: INTEGER_32
			-- Vertical offset relative to screen in pixels.
		require -- from  EV_POSITIONED_I
			True

	set_actual_drop_target_agent (an_agent: like actual_drop_target_agent)
			-- Assign an_agent to `actual_drop_target_agent`.
		require -- from EV_WIDGET_I
			an_agent_not_void: an_agent /= Void
		ensure -- from EV_WIDGET_I
			assigned: actual_drop_target_agent = an_agent

	set_focus
			-- Grab keyboard focus.

	set_minimum_height (a_minimum_height: INTEGER_32)
			-- Set the minimum vertical size to a_minimum_height in pixels.
		require -- from EV_WIDGET_I
			a_minimum_height_positive: a_minimum_height >= 0
		ensure -- from EV_WIDGET_I
			minimum_height_assigned: is_usable implies ((a_minimum_height > 0 implies attached_interface.minimum_height = a_minimum_height) or (a_minimum_height = 0 implies (attached_interface.minimum_height <= 1)))

	set_minimum_size (a_minimum_width: INTEGER_32; a_minimum_height: INTEGER_32)
			-- Set the minimum horizontal size to a_minimum_width in pixels.
			-- Set the minimum vertical size to a_minimum_height in pixels.
		require -- from EV_WIDGET_I
			a_minimum_width_positive: a_minimum_width >= 0
			a_minimum_height_positive: a_minimum_height >= 0
		ensure -- from EV_WIDGET_I
			minimum_width_assigned: is_usable implies ((a_minimum_width > 0 implies attached_interface.minimum_width = a_minimum_width) or (a_minimum_width = 0 implies (attached_interface.minimum_width <= 1)))
			minimum_height_assigned: is_usable implies ((a_minimum_height > 0 implies attached_interface.minimum_height = a_minimum_height) or (a_minimum_height = 0 implies (attached_interface.minimum_height <= 1)))

	set_minimum_width (a_minimum_width: INTEGER_32)
			-- Set the minimum horizontal size to a_minimum_width in pixels.
		require -- from EV_WIDGET_I
			a_minimum_width_positive: a_minimum_width >= 0
		ensure -- from EV_WIDGET_I
			minimum_width_assigned: is_usable implies ((a_minimum_width > 0 implies attached_interface.minimum_width = a_minimum_width) or (a_minimum_width = 0 implies (attached_interface.minimum_width <= 1)))

	set_pebble (a_pebble: ANY)
			-- Assign a_pebble to `pebble`.
		require -- from EV_PICK_AND_DROPABLE_I
			a_pebble_not_void: a_pebble /= Void
		ensure -- from EV_PICK_AND_DROPABLE_I
			pebble_assigned: pebble = a_pebble
			is_transport_enabled: is_transport_enabled

	set_pointer_style (c: EV_POINTER_STYLE)
			-- Set c as new cursor pixmap.
			-- Can be called through `interface`.

	set_tooltip (a_text: READABLE_STRING_GENERAL)
			-- Set the minimum horizontal size to a_minimum_width in pixels.
		require -- from EV_TOOLTIPABLE_I
			a_tooltip_not_void: a_text /= Void

	show
			-- Request that Current be displayed when its parent is.

	start_transport (a_x: INTEGER_32; a_y: INTEGER_32; a_button: INTEGER_32; a_press: BOOLEAN; a_x_tilt: REAL_64; a_y_tilt: REAL_64; a_pressure: REAL_64; a_screen_x: INTEGER_32; a_screen_y: INTEGER_32; a_menu_only: BOOLEAN)
			-- Start a pick and drop transport.

	tooltip: STRING_32
			-- Text displayed when user moves mouse over widget.

	update_buttons (a_parent: EV_TOOL_BAR; start_index, end_index: INTEGER_32)
			-- Ensure that buttons from start_index to end_index in a_parent are
			-- refreshed. This is called at the end of  a dockable transport from a tool bar button
			-- as on some platforms, they end up in an invalid state, and need refreshing.
		require -- from EV_DOCKABLE_SOURCE_I
			start_index_valid: start_index >= 1
			end_index_valid: end_index <= a_parent.count

	widget_imp_at_pointer_position: detachable EV_WIDGET_IMP
			-- Result is widget implementation at current
			-- cursor position.

	x_position: INTEGER_32
			-- Horizontal offset relative to parent `x_position` in pixels.

	y_position: INTEGER_32
			-- Vertical offset relative to parent `y_position` in pixels.
	
feature -- Drawing mode

	is_anti_aliasing_enabled: BOOLEAN
			-- Should anti-aliasing be used when drawing?
			-- See also: `set_anti_aliasing`.
			-- (from EV_DRAWABLE_IMP)

	set_anti_aliasing (value: BOOLEAN)
			-- Enable (if value) or disable (if not value) anti-aliasing (if supported) when drawing.
			-- Set `is_anti_aliasing_enabled` to value.
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True
		ensure then -- from EV_DRAWABLE_IMP
			is_anti_aliasing_enabled = value
	
feature -- Drawing operations

	Bounding_area: EV_RECTANGLE
			-- Temporary rectangle used internally.
			-- (from EV_DRAWABLE_IMP)

	draw_arc (x, y: INTEGER_32; a_bounding_width, a_bounding_height: INTEGER_32; a_start_angle, an_aperture: REAL_32)
			-- Draw part of an ellipse defined by a rectangular area with an
			-- upper left corner at x,y, width a_bounding_width and height
			-- a_bounding_height.
			-- Start at a_start_angle and stop at a_start_angle + an_aperture.
			-- Angles are measured in radians, and go
			-- counterclockwise from the 3 o'clock angle.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_bounding_width_positive_or_zero: a_bounding_width >= 0
			a_bounding_width_positive_or_zero: a_bounding_height >= 0

	draw_ellipse (x, y, a_bounding_width, a_bounding_height: INTEGER_32)
			-- Draw an ellipse defined by a rectangular area with an
			-- upper left corner at x,y, width a_bounding_width and height
			-- a_bounding_height.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_bounding_width_positive_or_zero: a_bounding_width >= 0
			a_bounding_height_positive_or_zero: a_bounding_height >= 0

	draw_ellipsed_text (x, y: INTEGER_32; a_text: READABLE_STRING_GENERAL; clipping_width: INTEGER_32)
			-- Draw a_text with left of baseline at (x, y) using `font`.
			-- Text is clipped to clipping_width in pixels and ellipses are displayed
			-- to show truncated characters if any.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_text_not_void: a_text /= Void
			clipping_width_positive: clipping_width >= 0

	draw_ellipsed_text_top_left (x, y: INTEGER_32; a_text: READABLE_STRING_GENERAL; clipping_width: INTEGER_32)
			-- Draw a_text with top left corner at (x, y) using `font`.
			-- Text is clipped to clipping_width in pixels and ellipses are displayed
			-- to show truncated characters if any.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_text_not_void: a_text /= Void
			clipping_width_positive: clipping_width >= 0

	draw_pie_slice (x, y: INTEGER_32; a_bounding_width, a_bounding_height: INTEGER_32; a_start_angle, an_aperture: REAL_32)
			-- Draw part of an ellipse defined by a rectangular area with an
			-- upper left corner at x,y, width a_bounding_width and height
			-- a_bounding_height.
			-- Start at a_start_angle and stop at a_start_angle + an_aperture.
			-- The arc is then closed by two segments through (x, 'y').
			-- Angles are measured in radians, start at the
			-- 3 o'clock angle and grow counterclockwise.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_bounding_width_positive_or_zero: a_bounding_width >= 0
			a_bounding_height_positive_or_zero: a_bounding_height >= 0

	draw_pixmap (x, y: INTEGER_32; a_pixmap: EV_PIXMAP)
			-- Draw a_pixmap with upper-left corner on (x, y).
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_pixmap_not_void: a_pixmap /= Void

	draw_point (x, y: INTEGER_32)
			-- Draw point at (x, y).
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True

	draw_polyline (points: ARRAY [EV_COORDINATE]; is_closed: BOOLEAN)
			-- Draw line segments between subsequent points in
			-- points. If is_closed draw line segment between first
			-- and last point in points.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			points_not_void: points /= Void

	draw_rectangle (x, y, a_width, a_height: INTEGER_32)
			-- Draw rectangle with upper-left corner on (x, y)
			-- with size a_width and a_height.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_width_positive_or_zero: a_width >= 0
			a_height_positive_or_zero: a_height >= 0

	draw_rotated_text (x, y: INTEGER_32; a_angle: REAL_32; a_text: READABLE_STRING_GENERAL)
			-- Draw rotated text a_text with left of baseline at (x, y) using `font`.
			-- Rotation is number of radians counter-clockwise from horizontal plane.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_text_not_void: a_text /= Void

	draw_segment (x1, y1, x2, y2: INTEGER_32)
			-- Draw line segment from (x1, 'y1') to (x2, 'y2').
			-- (from EV_DRAWABLE_IMP)
		require -- from  EV_DRAWABLE_I
			True

	draw_straight_line (x1, y1, x2, y2: INTEGER_32)
			-- Draw infinite straight line through (x1,'y1') and (x2,'y2').
			-- (from EV_DRAWABLE_I)

	draw_sub_pixel_buffer (x, y: INTEGER_32; a_pixel_buffer: EV_PIXEL_BUFFER; area: EV_RECTANGLE)
			-- Draw area of a_pixel_buffer with upper-left corner on (x, y).
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_pixel_buffer_not_void: a_pixel_buffer /= Void
			a_pixel_buffer_not_destroyed: not a_pixel_buffer.is_destroyed
			area_not_void: area /= Void

	draw_sub_pixmap (x, y: INTEGER_32; a_pixmap: EV_PIXMAP; area: EV_RECTANGLE)
			-- Draw area of a_pixmap with upper-left corner on (x, y).
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_pixmap_not_void: a_pixmap /= Void
			a_pixmap_not_destroyed: not a_pixmap.is_destroyed
			area_not_void: area /= Void

	draw_text (x, y: INTEGER_32; a_text: READABLE_STRING_GENERAL)
			-- Draw a_text with left of baseline at (x, y) using `font`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_text_not_void: a_text /= Void

	draw_text_top_left (x, y: INTEGER_32; a_text: READABLE_STRING_GENERAL)
			-- Draw a_text with top left corner at (x, y) using `font`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_text_not_void: a_text /= Void

	internal_draw_text (x, y: INTEGER_32; angle: REAL_32; clipping_width: INTEGER_32; from_baseline: BOOLEAN; a_text: READABLE_STRING_GENERAL)
			-- Draw a_text with top left corner at (x, y) using `font`.
			-- Text is clipped to clipping_width in pixels and ellipses are displayed
			-- to show truncated characters if any.
			-- Text is rotated counter-clockwise from the horizontal axis degrees degrees.
			-- (from EV_DRAWABLE_IMP)
	
feature -- Event handling

	conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when a pebble that fits here is picked.
			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I)
		ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	dock_ended_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed after a dock completes from Current.
			-- Either to a dockable target or a dockable dialog.
			-- (from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I)
		ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	dock_started_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when `pebble` is picked up.
			-- (from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I)
		ensure -- from EV_DOCKABLE_SOURCE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	dpi_changed_actions: EV_DPI_ACTION_SEQUENCE
			-- Actions to be performed when dpi changes.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	drop_actions: EV_PND_ACTION_SEQUENCE
			-- Actions to be performed when a pebble is dropped here.
			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I)
		ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	expose_actions: EV_GEOMETRY_ACTION_SEQUENCE
			-- Actions to be performed when an area needs to be redrawn.
			-- (from EV_DRAWABLE_ACTION_SEQUENCES_I)
		ensure -- from EV_DRAWABLE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	file_drop_actions: EV_LITE_ACTION_SEQUENCE [LIST [STRING_32]]
			-- Actions to be performed when an OS file drop occurs on Current.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	focus_in_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when keyboard focus is gained.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	focus_out_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when keyboard focus is lost.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	init_dpi_changed_actions (a_dpi_changed_actions: like dpi_changed_actions)
			-- Initialize a_dpi_changed_actions accordingly to the current widget.

	init_file_drop_actions (a_file_drop_actions: like file_drop_actions)
			-- Initialize a_file_drop_actions accordingly to the current widget.

	init_resize_actions (a_resize_actions: like resize_actions)
			-- Initialize a_resize_actions accordingly to the current widget.

	key_press_actions: EV_KEY_ACTION_SEQUENCE
			-- Actions to be performed when a keyboard key is pressed.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	key_press_string_actions: EV_KEY_STRING_ACTION_SEQUENCE
			-- Actions to be performed when a keyboard press generates a displayable character.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	key_release_actions: EV_KEY_ACTION_SEQUENCE
			-- Actions to be performed when a keyboard key is released.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	mouse_wheel_actions: EV_INTEGER_ACTION_SEQUENCE
			-- Actions to be performed when mouse wheel is rotated.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pick_actions: EV_PND_START_ACTION_SEQUENCE
			-- Actions to be performed when `pebble` is picked up.
			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I)
		ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pick_ended_actions: EV_PND_FINISHED_ACTION_SEQUENCE
			-- Actions to be performed when a transport from Current ends.
			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I)
		ensure -- from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_button_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer button is pressed.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_button_release_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer button is released.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_double_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer is double clicked.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_enter_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer enters widget.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_leave_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer leaves widget.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer moves.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void

	resize_actions: EV_GEOMETRY_ACTION_SEQUENCE
			-- Actions to be performed when size changes.
			-- (from EV_WIDGET_ACTION_SEQUENCES_I)
		ensure -- from EV_WIDGET_ACTION_SEQUENCES_I
			not_void: Result /= Void
	
feature -- Filling operations

	fill_ellipse (x, y, a_bounding_width, a_bounding_height: INTEGER_32)
			-- Fill an ellipse defined by a rectangular area with an
			-- upper left corner at x,y, width a_bounding_width and height
			-- a_bounding_height.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_bounding_width_positive_or_zero: a_bounding_width >= 0
			a_bounding_height_positive_or_zero: a_bounding_height >= 0

	fill_pie_slice (x, y: INTEGER_32; a_bounding_width, a_bounding_height: INTEGER_32; a_start_angle, an_aperture: REAL_32)
			-- Fill part of an ellipse defined by a rectangular area with an
			-- upper left corner at x,y, width a_bounding_width and height
			-- a_bounding_height.
			-- Start at a_start_angle and stop at a_start_angle + an_aperture.
			-- The arc is then closed by two segments through (x, 'y').
			-- Angles are measured in radians, start at the 3
			-- o'clock angle and grow counterclockwise.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_bounding_width_positive_or_zero: a_bounding_width >= 0
			a_bounding_height_positive_or_zero: a_bounding_height >= 0

	fill_polygon (points: ARRAY [EV_COORDINATE])
			-- Draw line segments between subsequent points in points.
			-- Fill all enclosed area's with `foreground_color`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			points_not_void: points /= Void

	fill_rectangle (x, y, a_width, a_height: INTEGER_32)
			-- Draw rectangle with upper-left corner on (x, y)
			-- with size a_width and a_height. Fill with `foreground_color`.
			-- (from EV_DRAWABLE_IMP)
		require -- from EV_DRAWABLE_I
			a_width_positive_or_zero: a_width >= 0
			a_height_positive_or_zero: a_height >= 0
	
feature -- For dialogs

	frozen dwlp_dlgproc: INTEGER_32
			-- (from WEL_GWL_CONSTANTS)

	frozen dwlp_msgresult: INTEGER_32
			-- (from WEL_GWL_CONSTANTS)

	frozen dwlp_user: INTEGER_32
			-- (from WEL_GWL_CONSTANTS)
	
feature -- For windows

	Gwl_hinstance: INTEGER_32 = -6
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwlp_hinstance`.
			-- (from WEL_GWL_CONSTANTS)

	Gwl_hwndparent: INTEGER_32 = -8
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwlp_hwndparent`.
			-- (from WEL_GWL_CONSTANTS)

	Gwl_id: INTEGER_32 = -12
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwlp_id`.
			-- (from WEL_GWL_CONSTANTS)

	Gwl_userdata: INTEGER_32 = -21
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwlp_userdata`.
			-- (from WEL_GWL_CONSTANTS)

	Gwl_wndproc: INTEGER_32 = -4
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwlp_wndproc`.
			-- (from WEL_GWL_CONSTANTS)

	Gwlp_hinstance: INTEGER_32 = -6
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwl_hinstance`.
			-- (from WEL_GWL_CONSTANTS)

	Gwlp_hwndparent: INTEGER_32 = -8
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwl_hwndparent`.
			-- (from WEL_GWL_CONSTANTS)

	Gwlp_id: INTEGER_32 = -12
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwl_id`.
			-- (from WEL_GWL_CONSTANTS)

	Gwlp_userdata: INTEGER_32 = -21
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwl_userdata`.
			-- (from WEL_GWL_CONSTANTS)

	Gwlp_wndproc: INTEGER_32 = -4
			-- Was declared in {WEL_GWL_CONSTANTS} as synonym of `gwl_wndproc`.
			-- (from WEL_GWL_CONSTANTS)
	
feature -- Misc.

	build_cursor: WEL_CURSOR
			-- Build a WEL_CURSOR from bitmap and mask_bitmap.
			-- (from EV_PIXMAP_IMP_STATE)
		ensure -- from EV_PIXMAP_IMP_STATE
			result_not_void: Result /= Void

	build_icon: WEL_ICON
			-- Build a WEL_ICON from bitmap and mask_bitmap.
			-- (from EV_PIXMAP_IMP_STATE)
		ensure -- from EV_PIXMAP_IMP_STATE
			result_not_void: Result /= Void

	copy_events_from_other (other: EV_PIXMAP_IMP_STATE)
			-- Copy all events from other to Current.
			-- Note that other is EV_PIXMAP_I and not EV_PIXMAP_IMP,
			-- as we need to use this in cases where other will
			-- not conform to EV_PIXMAP_IMP.
			-- (from EV_PIXMAP_IMP_STATE)

	gdi_compact
			-- Spare GDI resource by freeing icons, cursors, ... that
			-- can be reloaded from file.
			-- (from EV_PIXMAP_IMP_STATE)

	init_from_pixel_buffer (a_pixel_buffer: EV_PIXEL_BUFFER)
			-- Initialize from a_pixel_buffer
			-- (from EV_PIXMAP_IMP_STATE)
		require -- from EV_PIXMAP_I
			not_void: a_pixel_buffer /= Void

	raw_image_data: EV_RAW_IMAGE_DATA
			-- RGBA representation of Current.
			-- (from EV_PIXMAP_IMP_STATE)
		require -- from  EV_PIXMAP_I
			True
	
feature -- Navigation

	disable_tabable_from
			-- Make `is_tabable_from` False.
		ensure -- from EV_TAB_CONTROLABLE_I
			not_is_tabable_from: not is_tabable_from

	disable_tabable_to
			-- Make `is_tabable_to` False.
		ensure -- from EV_TAB_CONTROLABLE_I
			not_is_tabable_to: not is_tabable_to

	enable_tabable_from
			-- Make `is_tabable_from` True.
		ensure -- from EV_TAB_CONTROLABLE_I
			is_tabable_from: is_tabable_from

	enable_tabable_to
			-- Make `is_tabable_to` True.
		ensure -- from EV_TAB_CONTROLABLE_I
			is_tabable_to: is_tabable_to

	internal_tabable_info: NATURAL_8
			-- Storage for `is_tabable_from` and `is_tabable_to`.

	is_tabable_from: BOOLEAN
			-- Is Current able to be tabbed from?

	is_tabable_to: BOOLEAN
			-- Is Current able to be tabbed to?
	
feature -- Output

	Io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			io_not_void: Result /= Void

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			out_not_void: Result /= Void

	print (o: detachable ANY)
			-- Write terse external representation of o
			-- on standard output.
			-- (from ANY)
		ensure -- from ANY
			instance_free: class

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- (from ANY)
		ensure -- from ANY
			tagged_out_not_void: Result /= Void
	
feature -- Platform

	Operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
		ensure -- from ANY
			instance_free: class
			operating_environment_not_void: Result /= Void
	
feature -- Query

	is_file_name_valid (a_file_name: READABLE_STRING_GENERAL): BOOLEAN
			-- Is a_file_name valid?
			-- (from EV_PIXMAP_I)
		require -- from  EV_PIXMAP_IMP_STATE
			True
	
feature -- Saving

	save_to_named_path (a_format: EV_GRAPHICAL_FORMAT; a_file_path: PATH)
			-- Save Current to a_file_path in a_format format.
			-- (from EV_PIXMAP_IMP_STATE)
		require -- from EV_PIXMAP_I
			a_format_not_void: a_format /= Void
			a_filepath_not_void: a_file_path /= Void
		require -- from EV_PIXMAP_IMP_STATE
			a_format_not_void: a_format /= Void
			a_filename_not_void: a_file_path /= Void
	
feature -- Session

	drawing_session_depth: INTEGER_32
			-- (from EV_DRAWABLE_I)

	end_drawing_session
			-- End a drawing session.
			-- Used for optimization, to group sequence of drawings.
			-- note: as a drawing session can be inside another drawing session
			-- `end_drawing_session` has to be called as many time as `start_drawing_session` was called.			
			-- (from EV_DRAWABLE_I)
		require -- from EV_DRAWABLE_I
			drawing_session_depth > 0

	is_in_drawing_session: BOOLEAN
			-- Is inside a start/end drawing session?
			-- (from EV_DRAWABLE_I)

	is_in_top_drawing_session: BOOLEAN
			-- Is in the top start/end drawing session?
			-- i.e: not inside another similar drawing session.
			-- (from EV_DRAWABLE_I)

	start_drawing_session
			-- Start a drawing session.
			-- Used for optimization, to group sequence of drawings.
			-- note: as a drawing session can be inside another drawing session
			-- `end_drawing_session` has to be called as many time as `start_drawing_session` was called.			
			-- (from EV_DRAWABLE_I)
		ensure -- from EV_DRAWABLE_I
			drawing_session_depth > 0
	
feature -- Vertical text alignement

	vta_baseline: INTEGER_32
			-- The reference point is on the base line of the text.
			-- (from WEL_TA_CONSTANTS)

	vta_center: INTEGER_32
			-- The reference point is aligned vertically with the center of the bounding rectangle.
			-- (from WEL_TA_CONSTANTS)
	
feature --{EV_ANY_I} -- Implementation

	get_dc
			-- Get `dc`.
			-- By default does nothing, but is
			-- redefined by primitives that do not keep a consistent
			-- dc. Example : EV_DRAWING_AREA_IMP
			-- (from EV_DRAWABLE_IMP)

	release_dc
			-- Release `dc`.
			-- By default does nothing, but is
			-- redefined by primitives that do not keep a consistent
			-- dc. Example : EV_DRAWING_AREA_IMP
			-- (from EV_DRAWABLE_IMP)
	
invariant
	bitmap_not_void: is_initialized implies internal_bitmap /= Void
	bitmap_reference_tracked: attached internal_bitmap as l_internal_bitmap implies l_internal_bitmap.reference_tracked
	palette_reference_tracked: attached palette as l_palette implies l_palette.reference_tracked
	mask_bitmap_reference_tracked: attached internal_mask_bitmap as l_internal_mask_bitmap implies l_internal_mask_bitmap.reference_tracked
	dc_reference_tracked: attached dc as l_dc implies l_dc.reference_tracked
	mask_dc_reference_tracked: attached mask_dc as l_mask_dc implies l_mask_dc.reference_tracked

		-- from EV_ANY_I
	interface_coupled: is_usable implies interface /= Void and then attached_interface.implementation = Current
	base_make_called: is_usable implies base_make_called

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

		-- from EV_WIDGET_I
	is_displayed_implies_show_requested: is_usable and is_displayed implies is_show_requested

		-- from EV_PICK_AND_DROPABLE_I
	user_interface_modes_mutually_exclusive: mode_is_pick_and_drop.to_integer + mode_is_drag_and_drop.to_integer + mode_is_target_menu.to_integer = 1
	pebble_function_takes_two_integer_open_operands: attached pebble_function as l_pebble_function implies l_pebble_function.valid_operands ([1, 1])

		-- from EV_POSITIONED_I
	minimum_width_positive_or_zero: is_usable implies minimum_width >= 0
	minimum_height_positive_or_zero: is_usable implies minimum_height >= 0

		-- from EV_DOCKABLE_SOURCE_I
	widget_or_item_source: not (widget_source_being_docked /= Void and item_source_being_docked /= Void)
	dock_executing: is_dock_executing implies widget_source_being_docked /= Void or item_source_being_docked /= Void

		-- from EV_DRAWABLE_IMP
	reference_tracked_on_brush: attached internal_brush as l_brush implies l_brush.reference_tracked
	brush_exists: attached internal_brush as l_internal_brush implies l_internal_brush.exists
	reference_tracked_on_pen: attached internal_pen as l_pen implies l_pen.reference_tracked

note
	copyright: "Copyright (c) 1984-2021, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class EV_PIXMAP_IMP_DRAWABLE


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