WM__GetPrevSibling.c
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上传日期:2017-08-10
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- /*
- *********************************************************************************************************
- * 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__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