EMWIN的GUI_EndDialog 和 WM_DeleteWindow 这两个函数有什么区别？

狂奔的菜鸟

求教。
另外，多次打开关闭窗口后，按下按钮得到的ID值是0，这是为什么？

狂奔的菜鸟

@正点原子 @zuozhongkai

正点原子

帮顶

waszhang

void GUI_EndDialog(WM_HWIN hDialog, int r)
{
  WM_DIALOG_STATUS* pStatus;
  pStatus = GUI_GetDialogStatusPtr(hDialog);
  if (pStatus) {
    pStatus->ReturnValue = r;
    pStatus->Done = 1;
  }
  WM_DeleteWindow(hDialog);
}

void WM_DeleteWindow (WM_HWIN hWin) {
  WM_Obj* pWin;
  if (!hWin)
{
    return;
  }
  WM_ASSERT_NOT_IN_PAINT();
  WM_LOCK();
  if (WM__IsWindow(hWin)) {
    pWin = WM_H2P(hWin);
    ResetNextDrawWin();              /* Make sure the window will no longer receive drawing messages */
  /* Make sure that focus is set to an existing window */
    if (WM__hWinFocus == hWin) {
      WM__hWinFocus = 0;
    }
    if (WM__hCapture == hWin) {
      WM__hCapture = 0;
    }
    /* check if critical handles are affected. If so, reset the window handle to 0 */
    _CheckCriticalHandles(hWin);
    /* Inform parent */
    WM_NotifyParent(hWin, WM_NOTIFICATION_CHILD_DELETED);
    /* Delete all children */
    _DeleteAllChildren(pWin->hFirstChild);
    #if WM_SUPPORT_NOTIFY_VIS_CHANGED
      WM__SendMsgNoData(hWin, WM_NOTIFY_VIS_CHANGED);             /* Notify window that visibility may have changed */
    #endif
    /* Send WM_DELETE message to window in order to inform window itself */
    WM__SendMsgNoData(hWin, WM_DELETE);     /* tell window about it */
    WM__DetachWindow(hWin);
    /* Remove window from window stack */
    WM__RemoveFromLinList(hWin);
    /* Handle transparency counter if necessary */
    #if WM_SUPPORT_TRANSPARENCY
      if (pWin->Status & WM_SF_HASTRANS) {
        WM__TransWindowCnt--;
      }
    #endif
    /* Make sure window is no longer counted as invalid */
    if (pWin->Status & WM_SF_INVALID) {
      WM__NumInvalidWindows--;
    }
  /* Free window memory */
    WM__NumWindows--;
    GUI_ALLOC_Free(hWin);
  /* Select a valid window */
    WM_SelectWindow(WM__FirstWin);
  } else {
    GUI_DEBUG_WARN("WM_DeleteWindow: Invalid handle");
  }
  WM_UNLOCK();
}