wm_getdialogitem.c

来自「uCGUI」· C语言 代码 · 共 49 行

/*************************************************************************************************************
                                                   uC/GUI
                                               嵌入式通用图形软件
File        : WM_GetParent.c
Purpose     : Windows manager, add. module
************************************************************************************************************/


#include "WM_Intern.H"

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

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

  Recursively scan window and its child windows until dialog item is
  found or all children have been scanned.
*/
WM_HWIN WM__GetDialogItem(WM_HWIN hWin, int Id) {
  WM_HWIN hi;
  WM_HWIN r =0;
  WM_Obj* pWin = WM_H2P(hWin);
  hi = pWin->hFirstChild;
  while (hi) {
    /* This windows Id matching ? */
    if (WM_GetId(hi) == Id)
      return hi;
    /* Any child windows Id matching ? */
    if ((r = WM__GetDialogItem(hi, Id)) != 0)
      break;
    hi = WM_HANDLE2PTR(hi)->hNext;
  }
  return r;
}

WM_HWIN WM_GetDialogItem(WM_HWIN hWin, int Id) {
  WM_HWIN r;
  WM_LOCK();
    r = WM__GetDialogItem(hWin, Id);
  WM_UNLOCK();
  return r;
}
#else                                       /* Avoid empty object files */
  void WM_DialogItem_C(void) {}
#endif /* WM_MAX_WINDOW */