exit /b 23 in a .bat file returns 0 from QProcess::exitCode

[Agroni]

I have a batch file (ppp.bat) with only two lines in it:

start .
exit /b 23

start .
exit /b 23

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The C++ code to call QProcess::start is this:

QString program = "c:\\ppp.bat";
 
    QProcess *myProcess = new QProcess(this);
 
    myProcess->start(program);
    myProcess->waitForStarted();
 
    myProcess->waitForFinished(1000);
 
    QString strExitCode( "ExitCode is %1 ExitStatus is %2");
 
    strExitCode = strExitCode.arg( myProcess->exitCode()).arg( (int) myProcess->exitStatus());
 
    ui->textEdit->append( strExitCode);

QString program = "c:\\ppp.bat";

    QProcess *myProcess = new QProcess(this);

    myProcess->start(program);
    myProcess->waitForStarted();

    myProcess->waitForFinished(1000);

    QString strExitCode( "ExitCode is %1 ExitStatus is %2");

    strExitCode = strExitCode.arg( myProcess->exitCode()).arg( (int) myProcess->exitStatus());

    ui->textEdit->append( strExitCode);

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It always prints 0 for exitCode.

What is needed to have this function return 23?

Oh the OS is Windows XP SP 3 and the Qt is 4.8.1 compiled with VS2010.

Thanks.