VC限制程序窗口的变化大小

 处理WM_GETMINMAXINFO消息（在找到这个消息，需要在classwizard的class info页中把message filter改成window)

void CAboutDlg::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
{
    // TODO: Add your message handler code here and/or call default

    //限制宽度为250，最小高度为300
    lpMMI->ptMaxTrackSize.x=250;
    lpMMI->ptMinTrackSize.x=250;
    lpMMI->ptMinTrackSize.y=300;
    CDialog::OnGetMinMaxInfo(lpMMI);
}