Re: Hide a DoModal

Michael,

If you want the dialog to appear initially hidden here's a couple of
possibilities I've seen posted before:

Method 1
--------
Add a "visible" flag to the dialog class and initialize it to
FALSE in the constructor.

Add a handler for OnWindowPosChanging.

    void CTestDlg::OnWindowPosChanging( WINDOWPOS* lpwndpos )
    {
        if ( !m_bVisible )
            lpwndpos->flags &= ~SWP_SHOWWINDOW ;

        CDialog::OnWindowPosChanging(lpwndpos);
    }

Add a function to show/hide the app.

    void CTestDlg::DisplayWindow( BOOL bShow )
    {
        if ( bShow )
        {
            m_bVisible = TRUE;
            ShowWindow( SW_SHOWNORMAL );
        }
        else
        {
            m_bVisible = FALSE;
            ShowWindow( SW_HIDE );
        }
    }

Method 2
--------

Post a user defined message in OnInitDialog, and position the dialog
off-screen. In the processing of the user defined message hide the
window, and when you want to display it you can reposition
it and show it. Here's the general idea:

BEGIN_MESSAGE_MAP(CMindlgDlg, CDialog)
    //{{AFX_MSG_MAP(CMindlgDlg)
    ...
    //}}AFX_MSG_MAP
    ON_MESSAGE( WM_APP+1, OnAppMsg )
END_MESSAGE_MAP()

BOOL CMindlgDlg::OnInitDialog()
{
    ...

    // TODO: Add extra initialization here
    SetWindowPos( NULL, -1000, -1000, 0, 0,
            SWP_NOZORDER | SWP_NOSIZE | SWP_NOACTIVATE );

    PostMessage( WM_APP+1 );

    return TRUE;
}

LRESULT CMindlgDlg::OnAppMsg(WPARAM, LPARAM)
{
    ShowWindow( SW_HIDE );
    return 0;
}

Dave