VC限定窗口最小尺寸或最大尺寸

1.添加消息映射:

BEGIN_MESSAGE_MAP(CYdToolDlg, CDialog)
    ON_WM_GETMINMAXINFO()
END_MESSAGE_MAP()

2.添加消息处理函数:

void CYdToolDlg::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
    lpMMI->ptMinTrackSize.x = 640;   //x宽度
    lpMMI->ptMinTrackSize.y = 480;   //y高度  

    CDialog::OnGetMinMaxInfo(lpMMI);
}