BEGIN_MESSAGE_MAP(CxxxDlg, CDialogEx)
	...
	ON_WM_GETMINMAXINFO()
END_MESSAGE_MAP()
...
afx_msg void OnGetMinMaxInfo(MINMAXINFO* pMMI);
...
void CxxxDlg::OnGetMinMaxInfo(MINMAXINFO* pMMI)
{
	// TODO: Add your message handler code here and/or call default
	pMMI-> ptMaxSize.y = GetSystemMetrics(SM_CYFULLSCREEN) + GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYDLGFRAME);
	__super::OnGetMinMaxInfo(pMMI);
}