Re: WinSock SendData -> unknown Exception

From:

"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>

Newsgroups:

microsoft.public.vc.mfc

Date:

Mon, 25 Feb 2008 09:42:20 -0500

Message-ID:

<eSQJny7dIHA.1132@TK2MSFTNGP06.phx.gbl>

"clinisbut" <clinisbut@gmail.com> wrote in message
news:a5436ccd-5450-4add-8a17-9161c08dbe35@s12g2000prg.googlegroups.com...

Ok, I'm on implement that PostMessage() and, without testing it, I
have a doubt.

Is this "legal"?

void CALLBACK CUart3Dlg::StartTimer( UINT wTimerID, UINT msg, DWORD
dwUser, DWORD dw1, DWORD dw2 )
{
CMyDlg* obj = (CMyDlg*) dwUser;
       obj->Timer_SendData( wTimerID );
}

void CMyDlg::Timer_SendData( UINT wTimerID )
{
    if( this->something )
    {
         this->PostMessage( ID_MESSAGE, (WPARAM) wparam, (LPARAM)
lparam );
    }
}

Timer_SendData( wTimerID ); is being called from MMTimer thread (isn't
it?). Then it is not running under GUI Thread, but MMTimer thread.
If I call PostMessage() from inside Timer_SendData( wTimerID ), I'm
posting a message in GUI Thread. Is it OK?

Yes, your assumptions are correct and this does post a message to the GUI
thread. Make sure the timer callback function is declared 'static' in the
CUart3Dlg class declaration.

--
Scott McPhillips [VC++ MVP]