freertos_f407/User/system/lib/lcd/gui/WM/WM__GetPrevSibling.c

56 lines
1.9 KiB
C

/*
*********************************************************************************************************
* uC/GUI
* Universal graphic software for embedded applications
*
* (c) Copyright 2002, Micrium Inc., Weston, FL
* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
* µC/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__GetPrevSibling.c
Purpose : Implementation of WM__GetPrevSibling
----------------------------------------------------------------------
*/
#include "WM_Intern.h"
#if GUI_WINSUPPORT /* If 0, WM will not generate any code */
/*********************************************************************
*
* Public code
*
**********************************************************************
*/
/*********************************************************************
*
* WM__GetPrevSibling
Return value: Handle of previous sibling (if any), otherwise 0
*/
WM_HWIN WM__GetPrevSibling(WM_HWIN hWin) {
WM_HWIN hi;
WM_Obj* pi;
for (hi = WM__GetFirstSibling(hWin); hi; hi = pi->hNext) {
if (hi == hWin) {
hi = 0; /* There is no previous sibling. Return 0 */
break;
}
pi = WM_H2P(hi);
if (pi->hNext == hWin) {
break; /* We found the previous one ! */
}
}
return hi;
}
#else
void WM__GetPrevSibling_C(void) {} /* avoid empty object files */
#endif
/*************************** End of file ****************************/