C / C++ / MFC

Carl Cioffi wrote:

Exactly what does this line of code do and why would it be needed in a windows service?

Carl Cioffi wrote:

I don't really see it as a valid race condition.

void InitDebit() {

   int  rc;

   Log(DEBUG_ALWAYS,"Initializing US Debit");

   // Create and open the debit semaphore
   rc = DosCreateMutexSem(FingerPrintSemaphoreName,&FingerPrintSemaphoreHandle,0,0);

   if (rc) {
      Log(DEBUG_ERROR,"FingerPrint DosCreateMutexSem %d",rc);
   }

}  // end InitDebit

int APIENTRY WinMain(HINSTANCE hInstance,       // instance value of the invoked application
                     HINSTANCE hPrevInstance,   // no longer used
                     PSTR      pszCmdLine,      // pointer to the MS-DOS command line
                     int       nCmdShow         // value indicating initial state of the window
                     )
{
    BOOL myParameter;
    // get the parameter from the command line and convert to BOOL

    if (myParameter == TRUE)
    {
        DialogBoxParam(hInstance,
                       MAKEINTRESOURCE(IDD_DLG),
                       NULL,
                       (DLGPROC)DlgProc,
                       NULL
                       );
    }
    else
    {
        // call the function to calculate and write the file
    }

    return TRUE;
}

BOOL myParameter;
CMFCApplication4Dlg *pMainWnd = new CMFCApplication4Dlg;

if(myParameter)  // need a dialog
{
      pMainWnd->DoModal();
}else {    // needn't a dialog
pMainWnd->CreateEx(NULL,_T("STATIC"), L"Hi", WS_BORDER ,   //WS_VISIBLE is not need
          CRect(-15, -15, -15, -15), NULL,NULL);

     // start a thread which include while loop,
     // that can keep dialog running until you stop it by yourself
     // otherwise the programe will exit very quickly
}

Andraw111 wrote:

Now I have another program which only want to use the calculation result stored in file

Member 9990608 wrote:

Can somebody help me with a sample code of this .