wm__isancestor.c

MCB2300_ucgui_LCD320240.rar LPC2368的uc/gui的移植

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/GUI is protected by international copyright laws. Knowledge of the
*   		   source code may not be used to write a similar product. This file may
*   		   only be used in accordance with a license and should not be redistributed
*   		   in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File		: WM__IsAncestor.c
Purpose 	: Implementation of WM__IsAncestor
----------------------------------------------------------------------
*/

#include "WM_Intern.h"

#if GUI_WINSUPPORT    /* If 0, WM will not generate any code */

/*********************************************************************
*
*   	Public code
*
**********************************************************************
*/

/*********************************************************************
*
*   	WM__IsAncestor
*
* Return value:
*   if hChild is indeed a descendent (Child or child of child etc.) : 1
*   Else: 0
*
*
*/
int WM__IsAncestor(WM_HWIN hChild, WM_HWIN hParent)
{
	int r = 0;
	if (hChild && hParent)
	{
		while (hChild)
		{
			WM_Obj *pChild = WM_H2P(hChild);
			if (pChild->hParent == hParent)
			{
				r = 1;
				break;
			}
			hChild = pChild->hParent;
		}
	}
	return r;
}

/*********************************************************************
*
*   	WM__IsAncestor
*
* Return value:
*   if hChild is indeed a descendent (Child or child of child etc.) : 1
*   Else: 0
*
*
*/
int WM__IsAncestorOrSelf(WM_HWIN hChild, WM_HWIN hParent)
{
	if (hChild == hParent)
	{
		return 1;
	}
	return WM__IsAncestor(hChild, hParent);
}
#else
void WM__IsAncestor_c(void)
{
} /* avoid empty object files */
#endif

/*************************** End of file ****************************/