if(pDlg == NULL)
{
pDlg = new CMyDlg();
pDlg->Create(IDD_....);
}
if(pDlg->IsWindowVisible()==NULL)
{
pDlg->ShowWindow(SW_SHOW);
}
else
{
pDlg->ShowWindow(SW_HIDE);
pDlg->ShowWindow(SW_SHOW);
}
if(pDlg == NULL)
{
pDlg = new CMyDlg();
pDlg->Create(IDD_....);
}
if(pDlg->IsWindowVisible()==NULL)
{
pDlg->ShowWindow(SW_SHOW);
}
else
{
pDlg->ShowWindow(SW_HIDE);
pDlg->ShowWindow(SW_SHOW);
}