asked on

Show MessageBox after CDialog is visible

I want a CDialog dialog to launch the MessageBox based on data it gets in OnInitDialog(). But the MessageBox must only be displayed after the dialog is visble.

How do I do this?

thanks
Doubletreemutt

Priyesh

try a PostMessage from the InitDialog, before the return TRUE and write a handler for the message, show your message box in this.

like

ON_MESSAGE(WM_USER+101, OnUserMessage)
DECLARE_MESSAGE_MAP()

BOOL CMyDialog::OnInitDialog()
{
CDialog::OnInitDialog() ;

//acquire data?

PostMessage(WM_USER+101, 0, 0) ;

return TRUE ;

}

LRESULT CMyDialog::OnUserMessage(WPARAM wPar, LPARAM lPar)
{
AfxMessageBox("Init done") ;
return 0 ;
}

add this line to your header
afx_msg LRESULT OnUserMessage(WPARAM wPar, LPARAM lPar) ;

or, you could start a timer from OnInitDialog after you acquire data, then have the message shown from the timer routine, and kill the timer, you could use a boolean variable to indicate if OnInitDialog is completed

or u could map ON_SHOW_WINDOW()

there might be more ways..

ASKER CERTIFIED SOLUTION

Roshan Davis

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doubletreemutt

ASKER

Thanks roshmon that works perfectly.

Thanks also to Priyesh - I had tried your first and third solutions already - both displayed the MessageBox() before the dialog was visible. A timer would work but I was looking for something simpler like the OnPaint.

Doubletreemutt