void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
// TODO: Add your message handler code here and/or call default
lpMMI->ptMinTrackSize.x = 900; //最小宽度
lpMMI->ptMinTrackSize.y = 650; //最小高度
CFrameWnd::OnGetMinMaxInfo(lpMMI);
}
在mfc中,添加消息函数WM_GETMAXMININFO函数,