indexing
	description: "[
				Control that displays a multi-column list of items.
		
				Note: The common controls dll (WEL_COMMON_CONTROLS_DLL) needs to
					be loaded to use this control.
	]"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2006-03-22 23:29:03 -0800 (Wed, 22 Mar 2006) $"
	revision: "$Revision: 57641 $"

class interface
	WEL_LIST_VIEW

create 
	make (a_parent: WEL_WINDOW; a_x, a_y, a_width, a_height, an_id: INTEGER_32)
			-- Make a List view control.
		require
			a_parent_not_void: a_parent /= Void
		ensure
			exists: exists
			parent_set: parent = a_parent
			id_set: id = an_id

	make_by_id (a_parent: WEL_DIALOG; an_id: INTEGER_32)
			-- Make a control identified by `an_id' with `a_parent'
			-- as parent.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			a_parent_not_void: a_parent /= Void
			positive_id: an_id > 0
		ensure -- from WEL_CONTROL
			parent_set: parent = a_parent
			id_set: id = an_id

feature -- Access

	commands: WEL_COMMAND_MANAGER
			-- Command manager associated to the current window.
			-- (from WEL_WINDOW)

	default_processing: BOOLEAN
			-- (from WEL_RETURN_VALUE)

	font: WEL_FONT
			-- Font with which the control is drawing its text.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			exists: exists
		ensure -- from WEL_CONTROL
			result_not_void: Result /= Void

	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)

	has_return_value: BOOLEAN
			-- Should the window procedure return a value?
			-- (from WEL_RETURN_VALUE)

	id: INTEGER_32
			-- Control id
			-- (from WEL_CONTROL)

	item: POINTER
			-- Generic Windows handle or structure pointer.
			-- Can be a HWND, HICON, RECT *, WNDCLASS *, etc...
			-- (from WEL_ANY)

	message_return_value: POINTER
			-- Return value of the window procedure.
			-- (from WEL_RETURN_VALUE)
		require -- from WEL_RETURN_VALUE
			has_return_value: has_return_value

	parent: WEL_WINDOW
			-- Parent window
			-- (from WEL_WINDOW)
	
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

	absolute_x: INTEGER_32
			-- Absolute x position
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			Result = window_rect.x

	absolute_y: INTEGER_32
			-- Absolute y position
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			Result = window_rect.y

	background_brush: WEL_BRUSH
			-- Current window background color used to refresh the window when
			-- requested by the WM_ERASEBKGND windows message.
			-- By default there is no background
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			new_object: Result /= Void implies Result /= background_brush

	captured_window: WEL_WINDOW
			-- Current window which has been captured.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			window_captured: window_captured

	client_rect: WEL_RECT
			-- Client rectangle
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			result_not_void: Result /= Void

	column_count: INTEGER_32
			-- Number of columns

	command (message: INTEGER_32): WEL_COMMAND
			-- Command associated to `message'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			positive_message: message >= 0
			command_exists: command_exists (message)
		ensure -- from WEL_WINDOW
			result_not_void: Result /= Void

	command_argument (message: INTEGER_32): ANY
			-- Command argument associated to `message'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			positive_message: message >= 0
			command_exists: command_exists (message)

	command_exists (message: INTEGER_32): BOOLEAN
			-- Does a command associated to `message' exist?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			positive_message: message >= 0

	commands_enabled: BOOLEAN
			-- Is the commands execution enabled?
			-- (from WEL_WINDOW)

	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

	count: INTEGER_32
			-- Number of item in the list view
		require
			exists: exists

	enabled: BOOLEAN
			-- Is the window enabled for mouse and keyboard input?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	ex_style: INTEGER_32
			-- Window ex_style
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	exists: BOOLEAN
			-- Does the item exist?
			-- (from WEL_ANY)
		ensure -- from WEL_ANY
			Result = (item /= default_pointer)

	focus_item: INTEGER_32
			-- Zero-based index of the item that has the focus
			-- Return -1 if there is none.
		require
			exists: exists
		ensure
			result_large_enough: Result >= -1
			result_small_enough: Result < count

	focused_window: WEL_WINDOW
			-- Current window which has the focus.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	get_background_color: WEL_COLOR_REF
			-- `Result' is background color used for control.

	get_cell_text (isub_item, iitem: INTEGER_32): STRING_32
			-- Get the label of the cell with coordinates `isub_item', `iiitem'.
		require
			exists: exists
			iitem_large_enough: iitem >= 0
			isub_item_large_enough: isub_item >= 0
			iitem_small_enough: iitem < count
			isub_item_small_enough: isub_item < column_count

	get_column_width (column: INTEGER_32): INTEGER_32
			-- Width of the zero-based `index'-th item.
		require
			exists: exists
			index_large_enough: column >= 0
			index_small_enough: column < column_count

	get_extended_view_style: INTEGER_32
			-- Gets extended styles in list view controls.
		require
			function_supported: comctl32_version >= version_470

	get_item (index, subitem: INTEGER_32): WEL_LIST_VIEW_ITEM
			-- Return a representation of the item at the
			-- `index' position.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count
			subitem_large_enough: subitem >= 0
			subitem_small_enough: subitem < column_count

	get_item_position (index: INTEGER_32): WEL_POINT
			-- Retrieves the position of the zero-based `index'-th item.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count

	get_item_rect (index: INTEGER_32): WEL_RECT
			-- Retrieves the position of the zero-based `index'-th item.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index <= count

	get_item_state (index, mask: INTEGER_32): INTEGER_32
			-- State of the zero-based `index'-th item. The mask give
			-- the state informations to retrieve. See WEL_LVIS_CONSTANTS for
			-- the value of the mask.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count

	get_text_background_color: WEL_COLOR_REF
			-- `Result' is background color of item text.

	get_text_foreground_color: WEL_COLOR_REF
			-- `Result' is foreground color for item text.

	get_tooltip: WEL_TOOLTIP
			-- `Result' is tooltip associated with `Current'.

	has_capture: BOOLEAN
			-- Does this window have the capture?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	has_focus: BOOLEAN
			-- Does this window have the focus?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	has_heavy_capture: BOOLEAN
			-- Does this window have the heavy capture?
			-- (from WEL_WINDOW)

	has_horizontal_scroll_bar: BOOLEAN
			-- Does this window have a horizontal scroll bar?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	has_system_font: BOOLEAN
			-- Does the control use the system font?
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			exists: exists

	has_vertical_scroll_bar: BOOLEAN
			-- Does this window have a vertical scroll bar?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	heavy_capture_activated: BOOLEAN
			-- Is the heavy capture currently running?
			-- (i.e. is there a window in the current program
			-- with has_heavy_capture to True?)
			-- (from WEL_WINDOW)

	height: INTEGER_32
			-- Window height
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	is_inside: BOOLEAN
			-- Is the current window inside another window?
			-- (from WEL_WINDOW)

	maximal_height: INTEGER_32
			-- Maximal height allowed for the window
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			result_large_enough: Result >= minimal_height

	maximal_width: INTEGER_32
			-- Maximal width allowed for the window
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			result_large_enough: Result >= minimal_width

	maximized: BOOLEAN
			-- Is the window maximized?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	minimal_height: INTEGER_32
			-- Minimal height allowed for the window
			-- Zero by default.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			positive_result: Result >= 0
			result_small_enough: Result <= maximal_height

	minimal_width: INTEGER_32
			-- Minimal width allowed for the window
			-- Zero by default.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			positive_result: Result >= 0
			result_small_enough: Result <= maximal_width

	minimized: BOOLEAN
			-- Is the window minimized?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	placement: WEL_WINDOW_PLACEMENT
			-- Window placement information
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			result_not_void: Result /= 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))

	selected_count: INTEGER_32
			-- Number of selected items in the list view window
		require
			exists: exists

	selected_item: INTEGER_32
			-- Contains the top most selected index.
			-- -1 if no item is selected.
		require
			exists: exists
		ensure
			result_valid: selected_count > 0 implies Result >= 0

	selected_items: ARRAY [INTEGER_32]
			-- Contains all the selected index. Only one in
			-- case of a single selection list view.
		require
			exists: exists
		ensure
			result_not_void: Result /= Void
			result_valid: Result.count = selected_count

	shared: BOOLEAN
			-- Is item shared by another object?
			-- If False (by default), item will
			-- be destroyed by destroy_item.
			-- If True, item will not be destroyed.
			-- (from WEL_ANY)

	shown: BOOLEAN
			-- Is the window shown?
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	style: INTEGER_32
			-- Window style
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	text: STRING_32
			-- Window text
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			result_not_void: Result /= Void

	text_length: INTEGER_32
			-- Text length
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			positive_result: Result >= 0

	top_index: INTEGER_32
			-- Index of the first visible item
		require
			exists
		ensure
			result_large_enough: Result >= 0
			result_small_enough: Result <= count

	visible_count: INTEGER_32
			-- Number of items that will fit in the list view window
		require
			exists: exists

	width: INTEGER_32
			-- Window width
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	window_captured: BOOLEAN
			-- Has a window been captured?
			-- (from WEL_WINDOW)

	window_rect: WEL_RECT
			-- Window rectangle (absolute position)
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			result_not_void: Result /= Void

	x: INTEGER_32
			-- Window x position
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			parent = Void implies Result = absolute_x

	y: INTEGER_32
			-- Window y position
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			parent = Void implies Result = absolute_y
	
feature {ANY} -- Status report

	valid_hwnd_constant (c: POINTER): BOOLEAN
			-- Is `c' a valid hwnd constant?
			-- (from WEL_HWND_CONSTANTS)
	
feature -- Status setting

	disable
			-- Disable mouse and keyboard input
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			disabled: not enabled

	disable_commands
			-- Disable commands execution.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			commands_disabled: not commands_enabled

	disable_default_processing
			-- Disable default window processing.
			-- The standard window procedure will not be called for
			-- each messages received by the window and then the
			-- normal behavior will not occur.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			default_processing_disabled: not default_processing

	disable_drag_accept_files
			-- Disallow `Current' from being a file drag and drop target.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists

	enable
			-- Enable mouse and keyboard input.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			enabled: enabled

	enable_commands
			-- Enable commands execution.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			commands_enabled: commands_enabled

	enable_default_processing
			-- Enable default window processing.
			-- The standard window procedure will be called for
			-- each messages received by the window and then the
			-- normal behavior will occur.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			default_processing_enabled: default_processing

	enable_drag_accept_files
			-- Allow `Current' to be a file drag and drop target.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists

	ensure_visible (an_index: INTEGER_32)
			-- Ensure that column `an_index' is completely visible in `Current'.
		require
			exists: exists
			index_large_enough: an_index >= 0
			index_small_enough: an_index < count

	hide
			-- Hide the window
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			hidden: not shown

	maximize
			-- Maximize the window
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			maximized: maximized

	minimize
			-- Minimize the window and display its icon
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			minimized: minimized

	release_capture
			-- Release the mouse capture after a call
			-- to set_capture.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			has_capture: has_capture
		ensure -- from WEL_WINDOW
			not_has_capture: not has_capture

	release_heavy_capture
			-- Release the mouse capture after a call
			-- to set_heavy_capture.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			has_heavy_capture: has_heavy_capture
			heavy_capture_activated: heavy_capture_activated
		ensure -- from WEL_WINDOW
			heavy_capture_set: not has_heavy_capture
			heavy_capture_deactivated: not heavy_capture_activated

	restore
			-- Restore the window to its
			-- original size and position after
			-- minimize or maximize
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_background_color (a_color: WEL_COLOR_REF)
			-- Assign `a_color' to background of `Current'.

	set_capture
			-- Set the mouse capture to the `Current' window.
			-- Once the window has captured the mouse, all
			-- mouse input is directed to this window, regardless
			-- of whether the cursor is over that window. Only
			-- one window can have the mouse capture at a time.
			--
			-- Works only for windows in the same thread as your
			-- application.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			has_not_capture: not has_capture
			has_not_heavy_capture: not has_heavy_capture
		ensure -- from WEL_WINDOW
			has_capture: has_capture

	set_cell_text (isub_item, iitem: INTEGER_32; txt: STRING_GENERAL)
			-- Set the label of the cell with coordinates `isub_item', item
			-- with `txt'.
		require
			exists: exists
			isub_item_large_enough: isub_item >= 0
			iitem_large_enough: iitem >= 0
			isub_item_small_enough: isub_item < column_count
			iitem_small_enough: iitem < count

	set_column_format (index: INTEGER_32; fmt: INTEGER_32)
			-- Set the alignment of the column, cannot be used for
			-- the first column that must be left aligned.
		require
			exists: exists
			index_large_enough: index > 0
			index_small_enough: index < column_count
			good_format: valid_lvcfmt_constant (fmt)

	set_column_title (txt: STRING_GENERAL; index: INTEGER_32)
			-- Make `txt' the new title of the `index'-th column.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < column_count

	set_column_width (value, index: INTEGER_32)
			-- Make `value' the new width of the zero-base `index'-th column.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < column_count

	set_ex_style (an_ex_style: INTEGER_32)
			-- Set `an_ex_style' with ex_style.
			--
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_extended_view_style (a_new_style: INTEGER_32)
			-- Sets extended styles in list view controls.
		require
			function_supported: comctl32_version >= version_470

	set_focus
			-- Set the focus to `Current'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_heavy_capture
			-- Set the mouse capture to the `Current' window.
			-- Once the window has captured the mouse, all
			-- mouse input is directed to this window, regardless
			-- of whether the cursor is over that window. Only
			-- one window can have the mouse capture at a time.
			--
			-- Works for ALL windows.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			has_not_heavy_capture: not has_heavy_capture
			heavy_capture_deactivated: not heavy_capture_activated
		ensure -- from WEL_WINDOW
			heavy_capture_set: has_heavy_capture implies heavy_capture_activated

	set_image_list (an_imagelist: WEL_IMAGE_LIST)
			-- Set the current "large" image list to `an_imagelist'.
			-- If `an_imagelist' is set to Void, it removes
			-- the current associated image list (if any).

	set_item_count (value: INTEGER_32)
			-- Prepares a list view control for adding a large number
			-- of items and make it then faster.
		require
			exists: exists
			value_big_enough: value >= 0

	set_item_state (index, state: INTEGER_32)
			-- Set state of item at `index' with `state'.
			-- See class WEL_LVIS_CONSTANTS for possible `state' values.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count

	set_shared
			-- Set shared to True.
			-- (from WEL_ANY)
		ensure -- from WEL_ANY
			shared: shared

	set_small_image_list (an_imagelist: WEL_IMAGE_LIST)
			-- Set the current "small" image list to `an_imagelist'.
			-- If `an_imagelist' is set to Void, it removes
			-- the current associated image list (if any).

	set_style (a_style: INTEGER_32)
			-- Set style with `a_style'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_text_background_color (a_color: WEL_COLOR_REF)
			-- Assign `a_color' to background color of item text.

	set_text_foreground_color (a_color: WEL_COLOR_REF)
			-- Assign `a_color' to foreground color for item text.

	set_unshared
			-- Set shared to False.
			-- (from WEL_ANY)
		ensure -- from WEL_ANY
			unshared: not shared

	show
			-- Show the window
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	update_cached_style (new_ex_style, old_ex_style: INTEGER_32)
			-- Update Window cache buffer for Window style.
			-- (from WEL_WINDOW)

	update_item (index: INTEGER_32)
			-- Update the list view.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count
	
feature -- Element change

	append_column (column: WEL_LIST_VIEW_COLUMN)
			-- Append `column' to the list view.
		require
			exists: exists
		ensure
			new_column_count: column_count = old column_count + 1

	delete_column (index: INTEGER_32)
			-- Remove the zero-based `index'-th column of the list view.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < column_count
		ensure
			new_column_count: column_count = old column_count - 1

	delete_item (index: INTEGER_32)
			-- Remove the zero-based `index'-th item of the list view.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index < count
		ensure
			new_count: count = old count - 1

	disable_redraw
			-- Disable redrawing of `Current' until next call to enable_redraw.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	enable_redraw
			-- Ensure `Current' is redrawn as required.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	has_system_window_locked: BOOLEAN
			-- Is there any window locked ?
			-- (from WEL_WINDOW)

	insert_column (column: WEL_LIST_VIEW_COLUMN; index: INTEGER_32)
			-- Insert `column' at the zero-based `index'.
		require
			exists: exists
			index_large_enough: index >= 0
			index_small_enough: index <= column_count
		ensure
			new_column_count: column_count = old column_count + 1

	insert_item (an_item: WEL_LIST_VIEW_ITEM)
			-- Insert item in the list-view. The zero-based position of the item is
			-- given by the `iitem' attribute of the item.
		require
			exists: exists
			index_large_enough: an_item.iitem >= 0
			index_small_enough: an_item.iitem <= count
		ensure
			new_count: count = old count + 1

	lock_window_update
			-- Disables drawing in the current window. A locked window cannot be moved.
			-- Only one window can be locked at a time. To unlock a window locked with
			-- lock_window_update , call 'unlock_window_update'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			has_system_window_locked

	prepend_column (column: WEL_LIST_VIEW_COLUMN)
			-- Prepend `column' to the list view.
		require
			exists: exists
		ensure
			new_column_count: column_count = old column_count + 1

	replace_item (an_item: WEL_LIST_VIEW_ITEM)
			-- Set the properties of `an_item'.
			-- The zero-based position of the item is given by the
			-- `iitem' attribute of the item.
		require
			exists: exists
			index_large_enough: an_item.iitem >= 0
			index_small_enough: an_item.iitem <= count

	reset_content
			-- Reset the content of the list.
		require
			exists: exists
		ensure
			new_count: count = 0

	set_font (a_font: WEL_FONT)
			-- Set font with `a_font'.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			exists: exists
			a_font_not_void: a_font /= Void
			a_font_exists: a_font.exists
		ensure -- from WEL_CONTROL
			font_set: not has_system_font implies font.item = a_font.item

	set_height (a_height: INTEGER_32)
			-- Set height with `a_height'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_item (an_item: POINTER)
			-- Set item with `an_item'
			-- (from WEL_ANY)
		ensure -- from WEL_ANY
			item_set: item = an_item

	set_parent (a_parent: WEL_WINDOW)
			-- Change the parent of the current window.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_placement (a_placement: WEL_WINDOW_PLACEMENT)
			-- Set placement with `a_placement'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			a_placement_not_void: a_placement /= Void

	set_text (a_text: STRING_GENERAL)
			-- Set the window text
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			text_set_when_not_void: a_text /= Void implies text.is_equal (a_text)
			text_set_when_void: a_text = Void implies text.count = 0

	set_timer (timer_id, time_out: INTEGER_32)
			-- Set a timer identified by `timer_id' with a
			-- `time_out' value (in milliseconds).
			-- See also on_timer, kill_timer.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			positive_timer_id: timer_id > 0
			positive_time_out: time_out > 0

	set_width (a_width: INTEGER_32)
			-- Set width with `a_width'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_x (a_x: INTEGER_32)
			-- Set x with `a_x'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_y (a_y: INTEGER_32)
			-- Set y with `a_y'
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	unlock_window_update
			-- Unlock a locked window.	
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
	
feature -- Removal

	destroy
			-- Destroy the window.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
		ensure -- from WEL_WINDOW
			not_exists: not exists
	
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

	bring_to_top
			-- Bring this window to the top of the Z order.
			--
			-- Note:
			--  * If the window is a top-level window, it is activated.
			--  * If the window is a child window, the top-level parent window
			--    associated with the child window is activated.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	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_process_notification (notification_code: INTEGER_32)
			-- Process a `notification_code' which has not been
			-- processed by process_notification.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			exists: exists

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

	disable_horizontal_scroll_bar
			-- Disable the horizontal scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	disable_vertical_scroll_bar
			-- Disable the vertical scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

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

	enable_horizontal_scroll_bar
			-- Enable the horizontal scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	enable_vertical_scroll_bar
			-- Enable the vertical scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	go_to_next_group_item (a_parent: WEL_COMPOSITE_WINDOW; after: BOOLEAN)
			-- Find the previous or following control with the
			-- Wm_tabstop style in the current group in `a_parent'
			-- depending on the value of `after'.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			valid_parent: a_parent /= Void and then a_parent.exists

	go_to_next_tab_item (a_parent: WEL_COMPOSITE_WINDOW; after: BOOLEAN)
			-- Find the previous or following control with the
			-- Wm_tabstop style in `a_parent depending on the
			-- value of `after'.
			-- (from WEL_CONTROL)
		require -- from WEL_CONTROL
			valid_parent: a_parent /= Void and then a_parent.exists

	hide_horizontal_scroll_bar
			-- Hide the horizontal scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	hide_scroll_bars
			-- Hide the horizontal and vertical scroll bars.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	hide_vertical_scroll_bar
			-- Hide the vertical scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	insert_after (a_window: WEL_WINDOW)
			-- Insert the current window after `a_window'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			a_window_not_void: a_window /= Void
			a_window_not_current: a_window /= Current
			a_window_exists: a_window.exists

	invalidate
			-- Invalide the entire client area of the window. The
			-- background will be erased before.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	invalidate_rect (rect: WEL_RECT; erase_background: BOOLEAN)
			-- Invalidate the area `rect' and erase
			-- the background if `erase_background' is True.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			rect_not_void: rect /= Void

	invalidate_region (region: WEL_REGION; erase_background: BOOLEAN)
			-- Invalidate the area `region' and erase
			-- the background if `erase_background' is True.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			region_not_void: region /= Void
			region_exists: region.exists

	invalidate_without_background
			-- Invalidate the entire client area of the window. The
			-- background will not be erased.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	kill_timer (timer_id: INTEGER_32)
			-- Kill the timer identified by `timer_id'.
			-- See also set_timer, on_timer.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			positive_timer_id: timer_id > 0

	move (a_x, a_y: INTEGER_32)
			-- Move the window to `a_x', `a_y'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	move_and_resize (a_x, a_y, a_width, a_height: INTEGER_32; repaint: BOOLEAN)
			-- Move the window to `a_x', `a_y' position and
			-- resize it with `a_width', `a_height'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	put_command (a_command: WEL_COMMAND; message: INTEGER_32; argument: ANY)
			-- Put `a_command' associated to `message'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			a_command_not_void: a_command /= Void
			positive_message: message >= 0
		ensure -- from WEL_WINDOW
			command_added: command (message) = a_command and command_argument (message) = argument

	remove_command (message: INTEGER_32)
			-- Remove the command associated to `message'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			positive_message: message >= 0
			command_exists: command_exists (message)
		ensure -- from WEL_WINDOW
			command_removed: not command_exists (message)

	resize (a_width, a_height: INTEGER_32)
			-- Resize the window with `a_width', `a_height'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	scroll (a_x, a_y: INTEGER_32)
			-- Scroll the contents of the window's client area.
			-- `a_x' and `a_y' specify the amount of horizontal
			-- and vertical scrolling.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	set_class_icon (new_icon: WEL_ICON)
			-- Replace the current icon for the class which this window
			-- belongs to.
			--
			-- The SetClassLong function replaces the specified 32-bit (long)
			-- value at the specified offset into the extra class memory
			-- or the WNDCLASSEX structure for the class to which the
			-- specified window belongs.
			-- (from WEL_WINDOW)

	set_class_small_icon (new_icon: WEL_ICON)
			-- Replace the current icon for the class which this window
			-- belongs to.
			--
			-- The SetClassLong function replaces the specified 32-bit (long)
			-- value at the specified offset into the extra class memory
			-- or the WNDCLASSEX structure for the class to which the
			-- specified window belongs.
			-- (from WEL_WINDOW)

	set_z_order (z_order: POINTER)
			-- Set the z-order of the window.
			-- See class WEL_HWND_CONSTANTS for `z_order' values.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			valid_hwnd_constant: valid_hwnd_constant (z_order)

	show_horizontal_scroll_bar
			-- Show the horizontal scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	show_scroll_bars
			-- Show the horizontal and vertical scroll bars.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	show_vertical_scroll_bar
			-- Show the vertical scroll bar.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	show_with_option (cmd_show: INTEGER_32)
			-- Set the window's visibility with `cmd_show'.
			-- See class WEL_SW_CONSTANTS for `cmd_show' value.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			parent_shown: parent /= Void implies parent.exists and parent.shown

	update
			-- Update the client area by sending a Wm_paint message.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	validate
			-- Validate the entire client area of the window.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists

	validate_rect (rect: WEL_RECT)
			-- Validate the area `rect'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			rect_not_void: rect /= Void

	validate_region (region: WEL_REGION)
			-- Validate the area `region'.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			region_not_void: region /= Void
			region_exists: region.exists

	win_help (help_file: STRING_GENERAL; a_command, data: INTEGER_32)
			-- Start the Windows Help program with `help_file'.
			-- `a_command' specifies the type of help requested. See
			-- class WEL_HELP_CONSTANTS for `a_command' values.
			-- 'data' is depandant on 'a_command'.  Check MSDN for more details.
			-- (from WEL_WINDOW)
		require -- from WEL_WINDOW
			exists: exists
			help_file_not_void: help_file /= Void
	
feature -- "Shell and Common controls" Versions

	comctl32_version: INTEGER_32
			-- Version of Comctl32.dll
			-- (from WEL_WINDOWS_VERSION)

	shell32_version: INTEGER_32
			-- Version of Shell32.dll
			-- (from WEL_WINDOWS_VERSION)

	shlwapi_version: INTEGER_32
			-- Version of Shlwapi.dll
			-- (from WEL_WINDOWS_VERSION)
	
feature -- Basic Operations

	search (a_search_info: WEL_LIST_VIEW_SEARCH_INFO; a_starting_index: INTEGER_32): INTEGER_32
			-- Search list view item according to `a_search_info'.
			-- Search starts after zero based index `a_starting_index'.
			-- If `a_starting_index' is -1 then search all items.
			-- Result is zero based index of found item or -1 if item was not found.
		require
			non_void_search_info: a_search_info /= Void
			valid_search_info: a_search_info.exists
			valid_starting_index: a_starting_index >= -1 and a_starting_index < count
	
feature -- Compatible Windows Versions

	is_windows_2000_compatible: BOOLEAN
			-- Is the current program running under Windows 2000 or above?
			-- (from WEL_WINDOWS_VERSION)

	is_windows_98_compatible: BOOLEAN
			-- Is the current program running under Windows 98 or above?
			-- (from WEL_WINDOWS_VERSION)

	is_windows_9x: BOOLEAN
			-- Is the current program running under Windows 9x
			-- (Windows 95, Windows 98, Windows Me, ...)?
			-- (from WEL_WINDOWS_VERSION)

	is_windows_me_compatible: BOOLEAN
			-- Is the current program running under Windows Me or above?
			-- (from WEL_WINDOWS_VERSION)

	is_windows_nt: BOOLEAN
			-- Is the current program running under a version of
			-- windows belonging to the NT family?
			-- (Windows NT 3.51, Windows NT4, Windows 2000,
			-- Windows XP Home/Professional)
			-- (from WEL_WINDOWS_VERSION)

	is_windows_nt4_compatible: BOOLEAN
			-- Is the current program running under Windows NT4 or above?
			-- (from WEL_WINDOWS_VERSION)

	is_windows_xp_compatible: BOOLEAN
			-- Is the current program running under Windows XP or above?
			-- (from WEL_WINDOWS_VERSION)
	
feature -- Current Windows Version

	build_number: INTEGER_32
			-- Build number of current operating system
			-- (from WEL_WINDOWS_VERSION)
		require -- from WEL_WINDOWS_VERSION
			windows_nt_family: is_windows_nt

	major_version: INTEGER_32
			-- Major version of current operating system
			-- (from WEL_WINDOWS_VERSION)

	minor_version: INTEGER_32
			-- Minor version of current operating system
			-- (from WEL_WINDOWS_VERSION)
	
feature -- Element Change

	set_default_processing (value: BOOLEAN)
			-- Enable or disable default processing of window messages.
			-- (from WEL_RETURN_VALUE)
		ensure -- from WEL_RETURN_VALUE
			value_set: default_processing = value

	set_message_return_value (value: POINTER)
			-- Set the window-procedure-return-value.
			-- (from WEL_RETURN_VALUE)
		ensure -- from WEL_RETURN_VALUE
			has_return_value: has_return_value
			value_set: message_return_value = value
	
feature -- Exact Windows Versions

	is_windows_2000: BOOLEAN
			-- Is the current program running under Windows 2000?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows2000_is_nt: Result implies is_windows_nt

	is_windows_95: BOOLEAN
			-- Is the current program running under Windows 95
			-- (OSR1, OSR2 or OSR2.5)?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows95_is_9x: Result implies is_windows_9x

	is_windows_98: BOOLEAN
			-- Is the current program running under Windows 98
			-- (1st or 2nd edition)?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows98_is_9x: Result implies is_windows_9x

	is_windows_me: BOOLEAN
			-- Is the current program running under Windows Millenium Edition?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows_me_is_9x: Result implies is_windows_9x

	is_windows_nt4: BOOLEAN
			-- Is the current program running under Windows NT4?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows_nt4_is_nt: Result implies is_windows_nt

	is_windows_xp: BOOLEAN
			-- Is the current program running under Windows XP (Home or Professional)?
			-- (from WEL_WINDOWS_VERSION)
		ensure -- from WEL_WINDOWS_VERSION
			windows_xp_is_nt: Result implies is_windows_nt
	
feature -- Notifications

	on_lvn_begindrag (info: WEL_NM_LIST_VIEW)
			-- A drag-and-drop operation involving the left mouse
			-- button is being initiated.
		require
			exists: exists

	on_lvn_beginlabeledit (info: WEL_LIST_VIEW_ITEM)
			-- A label editing for an item has started.
		require
			exists: exists

	on_lvn_beginrdrag (info: WEL_NM_LIST_VIEW)
			-- A drag-and-drop operation involving the right mouse
			-- button is being initiated.
		require
			exists: exists

	on_lvn_columnclick (info: WEL_NM_LIST_VIEW)
			-- A column was tapped.
		require
			exists: exists

	on_lvn_deleteallitems (info: WEL_NM_LIST_VIEW)
			-- All the items were deleted.
		require
			exists: exists

	on_lvn_deleteitem (info: WEL_NM_LIST_VIEW)
			-- An item was deleted.
		require
			exists: exists

	on_lvn_endlabeledit (info: WEL_LIST_VIEW_ITEM)
			-- A label editing for an item has ended.
		require
			exists: exists

	on_lvn_getdispinfo (info: WEL_LIST_VIEW_ITEM)
			-- It is a request for the parent window to
			-- provide information needed to display or
			-- sort a list view item.
		require
			exists: exists

	on_lvn_insertitem (info: WEL_NM_LIST_VIEW)
			-- A new item was inserted.
		require
			exists: exists

	on_lvn_itemchanged (info: WEL_NM_LIST_VIEW)
			-- An item has changed.
		require
			exists: exists

	on_lvn_itemchanging (info: WEL_NM_LIST_VIEW)
			-- An item is changing
		require
			exists: exists

	on_lvn_keydown (virtual_key: INTEGER_32)
			-- A key has been pressed.
		require
			exists: exists

	on_lvn_setdispinfo (info: WEL_LIST_VIEW_ITEM)
			-- The list must update the information it maintains
			-- for an item.
		require
			exists: exists
	
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 -- Registration

	is_registered: BOOLEAN
			-- Is `window' registered?
			-- (from WEL_WINDOW)

	frozen register_current_window
			-- Register `Current' in window manager.
			-- (from WEL_WINDOW)
		ensure -- from WEL_WINDOW
			registered: is_registered
	
feature {ANY} -- Validation

	is_valid_list_view_flag (a_flag: INTEGER_32): BOOLEAN
			-- Is `a_flag' a valid list view search flag?
			-- (from WEL_LIST_VIEW_CONSTANTS)

	valid_lvcfmt_constant (value: INTEGER_32): BOOLEAN
			-- Is `value' a valid lvcfmt constant?
			-- (from WEL_LIST_VIEW_CONSTANTS)

	valid_lvis_constants (value: INTEGER_32): BOOLEAN
			-- Is `value' a valid "Item Styles" constant?
			-- (from WEL_LIST_VIEW_CONSTANTS)
	
feature -- Version Constants

	version_400: INTEGER_32 is 262144
			-- version_400 <=> Microsoft Windows 95/Windows NT 4.0
			-- (from WEL_WINDOWS_VERSION)

	version_470: INTEGER_32 is 262214
			-- version_470 <=> Microsoft Internet Explorer 3.x
			-- (from WEL_WINDOWS_VERSION)

	version_471: INTEGER_32 is 262215
			-- version_471 <=> Microsoft Internet Explorer 4.0
			-- (from WEL_WINDOWS_VERSION)

	version_472: INTEGER_32 is 262216
			-- version_472 <=> Microsoft Internet Explorer 4.01 & Windows 98
			-- (from WEL_WINDOWS_VERSION)

	version_500: INTEGER_32 is 327680
			-- version_500 (Shlwapi.dll) <=> Microsoft Internet Explorer 5
			-- version_500 (Shell32.dll) <=> Microsoft Windows 2000
			-- (from WEL_WINDOWS_VERSION)

	version_580: INTEGER_32 is 327760
			-- version_580 (Comctl32.dll) <=> Microsoft Internet Explorer 5
			-- (from WEL_WINDOWS_VERSION)

	version_581: INTEGER_32 is 327761
			-- version_581 (Comctl32.dll)<=> Microsoft Windows 2000
			-- (from WEL_WINDOWS_VERSION)

	version_600: INTEGER_32 is 393216
			-- version_600 (Comctl32.dll)<=> Microsoft Windows XP
			-- (from WEL_WINDOWS_VERSION)
	
feature -- Windows Versions (output)

	version_number_string: STRING_8
			-- String representing the version number using the following format
			--   <major_version>.<minor_version>.<build_number> for Windows NT, 2000, XP
			--   <major_version>.<minor_version> for Windows 95, 98, Me
			-- (from WEL_WINDOWS_VERSION)
	
invariant
		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

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 WEL_LIST_VIEW