Timer and Event

From:

Vincent RICHOMME <richom.v@free.fr>

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 31 Mar 2007 14:11:57 +0200

Message-ID:

<460e4f53$0$24848$426a74cc@news.free.fr>

Hi,

I would like your opinion about the best way of solving a problem.
Here is my situation, I have a DLL with some exported functions and a
hidden window receiving some messages from a COM object.

I have one method that we 'll call CalculateEnd() define like this :

void Foo::CalculateEnd( ULONG a_ulErrorCode )
{
    m_bfActive = FALSE;
    MYTRACE0(0, "--->BEFORE DELAY\n" );

// HERE I MUST DO A NON BLOCKING WAIT during 1800ms.
// IF I don't have received a signal from the window proc at the end
// of the timeout I keep on executing program, otherwise I still wait
// 1800ms

    MYTRACE0(0, "--->AFTER DELAY\n" );
    m_bActive = TRUE;

}

and my window proc :

LRESULT CALLBACK Foo::WndNotifierProc( HWND hWnd, UINT nMsg, WPARAM
wParam, LPARAM lParam )
{
    LRESULT lResult = TRUE;
    BOOL l_bNotify = FALSE;

    switch( nMsg )
    {
       case MESSAGE1:
       case MESSAGE2:
       case MESSAGE3:

        break;
    default:
        lResult = DefWindowProc( hWnd, nMsg, wParam, lParam );
        break;
    }

    if (bNotify == TRUE)
    {
       // NOTIFY CalculateEnd
    }

return lResult ;
}

When I exit from CalculateEnd I am not supposed to received MESSAGES so
I am doing a non blocking wait.
Of course I have thought about
::WaitForSingleObject/MsgWaitForMultipleObjects but I don't see how to
restart the 1800 ms timer.

The philosophy here is to say, as long as I received notifs I wait and
if I don't receive a notif during 1800ms it means that I can go on.

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