pro qslider_cw_state__define

@compile_opt.pro			; On error, return to caller

;+
; NAME:
;	qslider_cw_state__define
; PURPOSE:
;	Defines the state structure for the qslider_cw compound widget
; CATEGORY:
;	Compound widget qslider_cw
; CALLING SEQUENCE:
;	state = {qslider_cw_state}
; INPUTS:
;	parent			scalar; type: long integer
;						ID of the parent widget
; OUTPUTS:
;	(state structure)
; PROCEDURE:
;	The fields in the state structure are explained in href=qslider_cw= (compound widget)
;
; State structure
;	The state structure is stored as user value to the first child widget.
;	If the ID of the root widget is known the state can be retrieved by
;
;	wid_child = widget_info( wid_root, /child)
;	widget_control, wid_child, get_uvalue=state
;
;	The state consist of the widget id of all widgets making up the compound widget
;
; MODIFICATION HISTORY:
;	SEP-2001, Paul Hick (UCSD/CASS; pphick@ucsd.edu)

tmp = {QSLIDER_CW_STATE,		$

	wid_value		: 0L,	$		; First child (contains slider value)
	wid_minimum		: 0L,	$		; Contains slider minimum
	wid_slider		: 0L,	$		; Slider widget
	wid_maximum		: 0L	$		; Contains slider maximum
	}

;-

return  &  end