Re: Another SetTimer question

David Wilkinson <>
Sun, 29 Jul 2007 10:48:34 -0400
learnyourabc wrote:

I use the WaitForSingleObject(eventobj,timedelay) for the time delay
to replace the sleep function. There will be a event object that will
be signalled if the user exits the program.Is this right? see below.

HANDLE ExitEventObj;

UINT WorkerThreadProc( LPVOID Param )
//wait for 10 secs unless user press exit button then return and
proceed immediately
     if (WaitForSingleObject(ghGlobalWriteEvent, 10000) !=
        printf("delay for 10 secs - WaitForSingleObject failed (%d)
\n", GetLastError());
        printf("Timer was signaled or exit button is pressed.\n");

//do some stuff

   return TRUE;
void CTestDoc::OnTestStartwaittimer()

ExitEventObj = CreateEvent(
        NULL, // default security attributes
        TRUE, // manual-reset event
        TRUE, // initial state is signaled
        TEXT("ExitEvent") // object name

    if (ExitEventObj == NULL)
        printf("CreateEvent failed (%d)\n", GetLastError());

if (! ResetEvent(ExitEventObj) )
        printf("ResetEvent failed (%d)\n", GetLastError());

    m_WinThread =

    MessageBox(NULL,"Thread Started",NULL,MB_OK);


void CTestDoc::OnTestStopwaittimer()
//signal the event object
if (! SetEvent(ghGlobalWriteEvent) )
        printf("SetEvent failed (%d)\n", GetLastError());


Maybe I'm missing something, but I do not see why you launch the worker
thread and then have it wait for 10 seconds before doing anything. Why
not just wait 10 seconds before launching it?

David Wilkinson
Visual C++ MVP

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