    indexing
    	description: "EiffelVision pixmap. Common attributes betweenall different EV_PIXMAP Windows implementation"
    	legal: "See notice at end of class."
    	status: "See notice at end of class."
    	date: "$Date$"
    	revision: "$Revision$"

    deferred class interface
    	EV_PIXMAP_IMP_STATE

    feature -- Access

    	blue: INTEGER_32
    			-- Intensity value for the blue component
    			-- (from WEL_COLOR_REF)

    	cursor: WEL_CURSOR
    			-- Current pixmap in HCURSOR format. Void if none.

    	generating_type: STRING_8
    			-- Name of current object's generating type
    			-- (type of which it is a direct instance)
    			-- (from ANY)

    	generator: STRING_8
    			-- Name of current object's generating class
    			-- (base class of the type of which it is a direct instance)
    			-- (from ANY)

    	get_bitmap: WEL_BITMAP
    			-- Current bitmap used.
    			--
    			-- The number of references if incremented when calling
    			-- this feature, call `WEL_BITMAP.decrement_reference'
    		ensure
    			result_not_void: Result /= Void

    	get_mask_bitmap: WEL_BITMAP
    			-- Monochrome bitmap used as mask.
    			--
    			-- The number of references if incremented when calling
    			-- this feature, call `WEL_BITMAP.decrement_reference'
    		require
    			mask_in_use: has_mask
    		ensure
    			result_not_void: Result /= Void

    	green: INTEGER_32
    			-- Intensity value for the green component
    			-- (from WEL_COLOR_REF)

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

    	icon: WEL_ICON
    			-- Current pixmap in HICON format. Void if none.

    	item: INTEGER_32
    			-- The Current color.
    			-- (from WEL_COLOR_REF)

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

    	red: INTEGER_32
    			-- Intensity value for the red component
    			-- (from WEL_COLOR_REF)

    feature -- Measurement

    	height: INTEGER_32
    			-- Height of the pixmap in pixels.

    	width: INTEGER_32
    			-- Width of the pixmap in pixels.

    feature -- Comparison

    	frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' either both void
    			-- or attached to isomorphic object structures?
    			-- (from ANY)
    		ensure -- from ANY
    			shallow_implies_deep: standard_equal (some, other) implies Result
    			both_or_none_void: (some = Void) implies (Result = (other = Void))
    			same_type: (Result and (some /= Void)) implies some.same_type (other)
    			symmetric: Result implies deep_equal (other, some)

    	frozen equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' either both void or attached
    			-- to objects considered equal?
    			-- (from ANY)
    		ensure -- from ANY
    			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))

    	is_equal (other: like Current): 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.is_equal (Current)
    			consistent: standard_is_equal (other) implies Result

    	frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
    			-- Are `some' and `other' 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
    			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))

    	frozen standard_is_equal (other: like Current): 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

    	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

    	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))

    feature {ANY} -- Status report

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

    feature -- Element change

    	set_blue (a_blue: INTEGER_32)
    			-- Set blue with `a_blue'
    			-- (from WEL_COLOR_REF)
    		require -- from WEL_COLOR_REF
    			valid_blue_inf: a_blue >= 0
    			valid_blue_sup: a_blue <= 255
    		ensure -- from WEL_COLOR_REF
    			blue_set: blue = a_blue

    	set_color (color: INTEGER_32)
    			-- Set item with `color'.
    			-- (from WEL_COLOR_REF)
    		ensure -- from WEL_COLOR_REF
    			color_set: item = color

    	set_green (a_green: INTEGER_32)
    			-- Set green with `a_green'
    			-- (from WEL_COLOR_REF)
    		require -- from WEL_COLOR_REF
    			valid_green_inf: a_green >= 0
    			valid_green_sup: a_green <= 255
    		ensure -- from WEL_COLOR_REF
    			green_set: green = a_green

    	set_red (a_red: INTEGER_32)
    			-- Set red with `a_red'
    			-- (from WEL_COLOR_REF)
    		require -- from WEL_COLOR_REF
    			valid_red_inf: a_red >= 0
    			valid_red_sup: a_red <= 255
    		ensure -- from WEL_COLOR_REF
    			red_set: red = a_red

    	set_rgb (a_red, a_green, a_blue: INTEGER_32)
    			-- Set red, green, blue with
    			-- `a_red', `a_green', `a_blue'
    			-- (from WEL_COLOR_REF)
    		require -- from WEL_COLOR_REF
    			valid_red_inf: a_red >= 0
    			valid_red_sup: a_red <= 255
    			valid_green_inf: a_green >= 0
    			valid_green_sup: a_green <= 255
    			valid_blue_inf: a_blue >= 0
    			valid_blue_sup: a_blue <= 255
    		ensure -- from WEL_COLOR_REF
    			red_set: red = a_red
    			green_set: green = a_green
    			blue_set: blue = a_blue

    feature -- Duplication

    	copy (other: like Current)
    			-- 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: is_equal (other)

    	frozen deep_copy (other: like Current)
    			-- 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: like Current
    			-- New object structure recursively duplicated from Current.
    			-- (from ANY)
    		ensure -- from ANY
    			deep_equal: deep_equal (Current, Result)

    	frozen standard_copy (other: like Current)
    			-- 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: like Current
    			-- 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: like Current
    			-- New object equal to `Current'
    			-- twin calls copy; to change copying/twining semantics, redefine copy.
    			-- (from ANY)
    		ensure -- from ANY
    			twin_not_void: Result /= Void
    			is_equal: Result.is_equal (Current)

    feature -- Basic operations

    	frozen default: like Current
    			-- 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)

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

    	frozen do_nothing
    			-- Execute a null action.
    			-- (from ANY)

    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

    	create_conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE
    			-- Create a conforming_pick action sequence.
    			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_IMP)

    	create_drop_actions: EV_PND_ACTION_SEQUENCE
    			-- Create a drop action sequence.
    			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_IMP)

    	create_expose_actions: EV_GEOMETRY_ACTION_SEQUENCE
    			-- Create a expose action sequence.
    			-- (from EV_PIXMAP_ACTION_SEQUENCES_IMP)

    	create_focus_in_actions: EV_NOTIFY_ACTION_SEQUENCE
    			-- Create a focus_in action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_focus_out_actions: EV_NOTIFY_ACTION_SEQUENCE
    			-- Create a focus_out action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_key_press_actions: EV_KEY_ACTION_SEQUENCE
    			-- Create a key_press action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_key_press_string_actions: EV_KEY_STRING_ACTION_SEQUENCE
    			-- Create a key_press_string action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_key_release_actions: EV_KEY_ACTION_SEQUENCE
    			-- Create a key_release action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_mouse_wheel_actions: EV_INTEGER_ACTION_SEQUENCE
    			-- Create a mouse_wheel action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pick_actions: EV_PND_START_ACTION_SEQUENCE
    			-- Create a pick action sequence.
    			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_IMP)

    	create_pick_ended_actions: EV_PND_FINISHED_ACTION_SEQUENCE
    			-- Create a pick ended action sequence.
    			-- (from EV_PICK_AND_DROPABLE_ACTION_SEQUENCES_IMP)

    	create_pointer_button_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    			-- Create a pointer_button_press action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pointer_button_release_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    			-- Create a pointer_button_release action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pointer_double_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
    			-- Create a pointer_double_press action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pointer_enter_actions: EV_NOTIFY_ACTION_SEQUENCE
    			-- Create a pointer_enter action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pointer_leave_actions: EV_NOTIFY_ACTION_SEQUENCE
    			-- Create a pointer_leave action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE
    			-- Create a pointer_motion action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	create_resize_actions: EV_GEOMETRY_ACTION_SEQUENCE
    			-- Create a resize action sequence.
    			-- (from EV_WIDGET_ACTION_SEQUENCES_IMP)

    	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_PIXMAP_ACTION_SEQUENCES_I)
    		ensure -- from EV_PIXMAP_ACTION_SEQUENCES_I
    			not_void: Result /= Void

    	file_drop_actions: ACTION_SEQUENCE [TUPLE [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

    	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 -- Misc.

    	build_cursor: WEL_CURSOR
    			-- Build a WEL_CURSOR from `bitmap' and `mask_bitmap'.
    		ensure
    			result_not_void: Result /= Void

    	build_icon: WEL_ICON
    			-- Build a WEL_ICON from `bitmap' and `mask_bitmap'.
    		ensure
    			result_not_void: Result /= Void

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

    	raw_image_data: EV_RAW_IMAGE_DATA
    			-- RGBA representation of `Current'.

    feature -- Output

    	io: STD_FILES
    			-- Handle to standard file setup
    			-- (from ANY)

    	out: STRING_8
    			-- New string containing terse printable representation
    			-- of current object
    			-- Was declared in ANY as synonym of tagged_out.
    			-- (from ANY)

    	print (some: ANY)
    			-- Write terse external representation of `some'
    			-- on standard output.
    			-- (from ANY)

    	frozen tagged_out: STRING_8
    			-- New string containing terse printable representation
    			-- of current object
    			-- Was declared in ANY as synonym of out.
    			-- (from ANY)

    feature -- Platform

    	operating_environment: OPERATING_ENVIRONMENT
    			-- Objects available from the operating system
    			-- (from ANY)

    feature -- Saving

    	save_to_named_file (a_format: EV_GRAPHICAL_FORMAT; a_filename: FILE_NAME)
    			-- Save `Current' to `a_filename' in `a_format' format.
    		require
    			a_format_not_void: a_format /= Void
    			a_filename_not_void: a_filename /= Void
    			a_filename_valid: a_filename.is_valid

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

    		-- from WEL_COLOR_REF
    	valid_red_inf: red >= 0
    	valid_red_sup: red <= 255
    	valid_green_inf: green >= 0
    	valid_green_sup: green <= 255
    	valid_blue_inf: blue >= 0
    	valid_blue_sup: blue <= 255

    indexing
    	copyright: "Copyright (c) 1984-2006, Eiffel Software and others"
    	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
    	source: "[
    		Eiffel Software
    		356 Storke Road, 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_STATE