SDI main frame and WM_ENDSESSION

I added WM_ENDSESSION handler to CMainFrame class of SDI application:

void CMainFrame::OnEndSession(BOOL bEnding)
{
    CFrameWnd::OnEndSession(bEnding);

    if ( bEnding )
        Beep(300, 300);
}

When I reboot/log off while program is running, this function is not called. If I do the same in MDI application, it works - I hear beep. How can I handle computer shitdown/log off event in SDI application?
LVL 48
AlexFMAsked:
Who is Participating?
 
jkrConnect With a Mentor Commented:
The reason seems to lie in the call to

CFrameWnd::OnEndSession(bEnding);

because it does

// when Windows session ends, close all documents
void CFrameWnd::OnEndSession(BOOL bEnding)
{
    if (!bEnding)
        return;

    CWinApp* pApp = AfxGetApp();
    if (pApp != NULL && pApp->m_pMainWnd == this)
    {
        AfxOleSetUserCtrl(TRUE);    // keeps from randomly shutting down
        pApp->CloseAllDocuments(TRUE);

        // allow application to save settings, etc.
        pApp->ExitInstance();
    }
}

call ExitInstance() directly. You'll hear the beep if you call the base class' implementation after your code.

BTW:

>>How can I handle computer shitdown/log off event in SDI application?

I *love* that typo, it made my day :o)
0
 
AlexFMAuthor Commented:
Thanks :-)
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.