动态修改对话框的大小

清泛编译
89. 动态修改对话框的大小

 [问题提出]
  关于如何动态改变对话框的大小,我做了个Demo,大家看看.

 [程序实现]
   //本函数使用方法: 
   //第一个参数:如果是TRUE表示显示扩展的对话框,如果是FALSE,表示缩小对话框。 
   //第二个参数:表示本对话框的HWND, 
   //第三个参数:表示缩小后大小的控件的ID
  void COptionDlg::ExpandBox(BOOL fExpand, HWND hwnd, int nIDDefaultBox)
  {
     CWnd *pWndBox=GetDlgItem(nIDDefaultBox);
     RECT rcDefaultBox,rcChild,rcIntersection,rcWnd;
     pWndBox->GetWindowRect(&rcDefaultBox);
     HWND hwndChild = ::GetTopWindow(hwnd);
     for (; hwndChild != NULL; hwndChild = ::GetNextWindow(hwndChild,GW_HWNDNEXT)) 
     {
         ::GetWindowRect(hwndChild, &rcChild);
         if (!IntersectRect(&rcIntersection, &rcChild, &rcDefaultBox))
              ::EnableWindow(hwndChild, fExpand);
     }
     ::GetWindowRect(hwnd, &rcWnd);
     if (GetWindowLong(hwnd, GWL_USERDATA) == 0)
     {
         SetWindowLong(hwnd, GWL_USERDATA,
              MAKELONG(rcWnd.right - rcWnd.left, 
              rcWnd.bottom - rcWnd.top));
         ::ShowWindow(pWndBox->m_hWnd, SW_HIDE);
     }
     ::SetWindowPos(hwnd, NULL, 0, 0,
         rcDefaultBox.right - rcWnd.left,
         rcDefaultBox.bottom - rcWnd.top,
         SWP_NOZORDER | SWP_NOMOVE);
     if(fExpand)
     {
         DWORD dwDims = GetWindowLong(hwnd, GWL_USERDATA);
         ::SetWindowPos(hwnd, NULL, 0, 0,
              LOWORD(dwDims), HIWORD(dwDims), SWP_NOZORDER | SWP_NOMOVE);
         ::SendMessage(hwnd, DM_REPOSITION, 0, 0);
     }
  }

本文导航

MFC 总结 技巧

分享到:
评论加载中,请稍后...
App Inventor 2 中文网,少儿编程首选平台!
回到顶部