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intercept SHUTDOWN (given from WIN_NT task bar) msg in ur APPLN

Posted on 1998-01-02
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Last Modified: 2013-12-03
How to intercept (in my running application) a SHUTDOWN msg issued from NT -TASKBAR?

I am not getting any WM_ENDSESSION or WM_QUERYENDSESSION or similar msgs in my MainWindow.

But if u see DevStudio, if u have any unsaved files, DevStudio warns u about it and asks u to save unsaved work.

How they are acheiving this???

Regards,
Venkatesan Pillai
Senior Software Enginner
AUTODESK Inc,
SanFransisco, CA -94903
Ph : 415-507-4878
E-Mail : dvenkat@cyberspace.org
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Question by:dvenkat
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jhance earned 20 total points
ID: 1409813
If you are using MFC you need to do the following:

In you message map add the ON_WM_QUERYENDSESSION():

BEGIN_MESSAGE_MAP(CLogStatsDlg, CDialog)
      //{{AFX_MSG_MAP(CLogStatsDlg)
      ON_WM_PAINT()
      ON_WM_QUERYDRAGICON()
      ON_BN_CLICKED(IDC_BROWSE, OnBrowse)
      ON_WM_QUERYENDSESSION()
      //}}AFX_MSG_MAP
END_MESSAGE_MAP()

Then add the OnQueryEndSession() member function:

BOOL CLogStatsDlg::OnQueryEndSession()
{
      //if (!CDialog::OnQueryEndSession())
      //      return FALSE;
      
      // TODO: Add your specialized query end session code here
      AfxMessageBox("QUERYENDSESSION", MB_OK);
      return FALSE;  // Always refuse to shutdown!
}
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