class
	WEL_HEADER_CONTROL

General
	cluster: wel
	description: 
		"A header control is a window that is usually positioned
		above columns of text or numbers. It contains a title for
		each column, and it can be divided into parts. The user
		can drag the dividers that separate the parts to set the
		width of each column.
		
		Note: The common controls dll (WEL_COMMON_CONTROLS_DLL) needs to
		be loaded to use this control."
	create: make_by_id, make

Ancestors
	WEL_BIT_OPERATIONS
	WEL_CONTROL*
	WEL_HDF_CONSTANTS
	WEL_HDI_CONSTANTS
	WEL_HDM_CONSTANTS
	WEL_HDN_CONSTANTS
	WEL_HDS_CONSTANTS

Queries
	absolute_x: INTEGER_32
	absolute_y: INTEGER_32
	background_brush: WEL_BRUSH
	captured_window: WEL_WINDOW
	clear_flag (flags, mask: INTEGER_32): INTEGER_32
	client_rect: WEL_RECT
	command (message: INTEGER_32): WEL_COMMAND
	command_argument (message: INTEGER_32): ANY
	command_exists (message: INTEGER_32): BOOLEAN
	commands: WEL_COMMAND_MANAGER
	commands_enabled: BOOLEAN
	default_processing: BOOLEAN
	enabled: BOOLEAN
	ex_style: INTEGER_32
	exists: BOOLEAN
	flag_set (flags, mask: INTEGER_32): BOOLEAN
	focused_window: WEL_WINDOW
	font: WEL_FONT
	get_image_list: WEL_IMAGE_LIST
	has_capture: BOOLEAN
	has_focus: BOOLEAN
	has_heavy_capture: BOOLEAN
	has_horizontal_scroll_bar: BOOLEAN
	has_return_value: BOOLEAN
	has_system_font: BOOLEAN
	has_system_window_locked: BOOLEAN
	has_vertical_scroll_bar: BOOLEAN
	heavy_capture_activated: BOOLEAN
	height: INTEGER_32
	id: INTEGER_32
	is_inside: BOOLEAN
	is_registered: BOOLEAN
	item: POINTER
	item_count: INTEGER_32
	item_info_from_point (a_point: WEL_POINT): WEL_HD_HIT_TEST_INFO
	maximal_height: INTEGER_32
	maximal_width: INTEGER_32
	maximized: BOOLEAN
	message_return_value: POINTER
	minimal_height: INTEGER_32
	minimal_width: INTEGER_32
	minimized: BOOLEAN
	parent: WEL_WINDOW
	placement: WEL_WINDOW_PLACEMENT
	set_flag (flags, mask: INTEGER_32): INTEGER_32
	shared: BOOLEAN
	shown: BOOLEAN
	style: INTEGER_32
	text: STRING_32
	text_length: INTEGER_32
	valid_hwnd_constant (c: POINTER): BOOLEAN
	valid_index (index: INTEGER_32): BOOLEAN
	width: INTEGER_32
	window_captured: BOOLEAN
	window_rect: WEL_RECT
	x: INTEGER_32
	y: INTEGER_32

Commands
	bring_to_top
	default_process_notification (notification_code: INTEGER_32)
	delete_header_item (index: INTEGER_32)
	destroy
	disable
	disable_commands
	disable_default_processing
	disable_drag_accept_files
	disable_horizontal_scroll_bar
	disable_redraw
	disable_vertical_scroll_bar
	enable
	enable_commands
	enable_default_processing
	enable_drag_accept_files
	enable_horizontal_scroll_bar
	enable_redraw
	enable_vertical_scroll_bar
	go_to_next_group_item (a_parent: WEL_COMPOSITE_WINDOW; after: BOOLEAN)
	go_to_next_tab_item (a_parent: WEL_COMPOSITE_WINDOW; after: BOOLEAN)
	hide
	hide_horizontal_scroll_bar
	hide_scroll_bars
	hide_vertical_scroll_bar
	insert_after (a_window: WEL_WINDOW)
	insert_header_item (hd_item: WEL_HD_ITEM; insert_after_item_no: INTEGER_32)
	insert_text_header_item (a_label: STRING_GENERAL; a_width, a_format, insert_after_item_no: INTEGER_32)
	invalidate
	invalidate_rect (rect: WEL_RECT; erase_background: BOOLEAN)
	invalidate_region (region: WEL_REGION; erase_background: BOOLEAN)
	invalidate_without_background
	kill_timer (timer_id: INTEGER_32)
	lock_window_update
	maximize
	minimize
	move (a_x, a_y: INTEGER_32)
	move_and_resize (a_x, a_y, a_width, a_height: INTEGER_32; repaint: BOOLEAN)
	on_hdn_begin_track (info: WEL_HD_NOTIFY)
	on_hdn_divider_dbl_click (info: WEL_HD_NOTIFY)
	on_hdn_end_track (info: WEL_HD_NOTIFY)
	on_hdn_item_changed (info: WEL_HD_NOTIFY)
	on_hdn_item_changing (info: WEL_HD_NOTIFY)
	on_hdn_item_click (info: WEL_HD_NOTIFY)
	on_hdn_item_dbl_click (info: WEL_HD_NOTIFY)
	on_hdn_track (info: WEL_HD_NOTIFY)
	put_command (a_command: WEL_COMMAND; message: INTEGER_32; argument: ANY)
	register_current_window
	release_capture
	release_heavy_capture
	remove_command (message: INTEGER_32)
	resize (a_width, a_height: INTEGER_32)
	restore
	retrieve_and_set_windows_pos (parent_client_rect: WEL_RECT)
	scroll (a_x, a_y: INTEGER_32)
	set_capture
	set_class_icon (new_icon: WEL_ICON)
	set_class_small_icon (new_icon: WEL_ICON)
	set_default_processing (value: BOOLEAN)
	set_ex_style (an_ex_style: INTEGER_32)
	set_focus
	set_font (a_font: WEL_FONT)
	set_header_item (index: INTEGER_32; hd_item: WEL_HD_ITEM)
	set_heavy_capture
	set_height (a_height: INTEGER_32)
	set_image_list (image_list: WEL_IMAGE_LIST)
	set_item (an_item: POINTER)
	set_message_return_value (value: POINTER)
	set_parent (a_parent: WEL_WINDOW)
	set_placement (a_placement: WEL_WINDOW_PLACEMENT)
	set_shared
	set_style (a_style: INTEGER_32)
	set_text (a_text: STRING_GENERAL)
	set_timer (timer_id, time_out: INTEGER_32)
	set_unshared
	set_width (a_width: INTEGER_32)
	set_x (a_x: INTEGER_32)
	set_y (a_y: INTEGER_32)
	set_z_order (z_order: POINTER)
	show
	show_horizontal_scroll_bar
	show_scroll_bars
	show_vertical_scroll_bar
	show_with_option (cmd_show: INTEGER_32)
	unlock_window_update
	update
	update_cached_style (new_ex_style, old_ex_style: INTEGER_32)
	validate
	validate_rect (rect: WEL_RECT)
	validate_region (region: WEL_REGION)
	win_help (help_file: STRING_GENERAL; a_command, data: INTEGER_32)