wm__isancestor.c

成功移植到s3c44b0开发板上的ucos-ii和lwip

/*
*********************************************************************************************************
*                                                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 ****************************/