No SIGNAL from startDetached ?

Anonymous_Banned275

Contrary to the documentation the attached code produces desired results, but appears to emit no SIGNALs - I was expecting at least "started'.
Is is codded correctly ?

    OProcess.startDetached(Command);
    OProcess.waitForFinished();

   qDebug(" START int  Form::RunProcess_Asynch(QString Commnd)");
    qDebug() << Command; // TODO Add connect HERE
    ClearTempFile();
    QProcess OProcess;
    connect(&OProcess, &QProcess::errorOccurred, this, &Form::processError);
    //connect(&OProcess, &QProcess::finished(exit)::finished, this, &Form::processFinished);
    //    connect(&OProcess, &QProcess::started, this, &Form::processError);
    connect(&OProcess, &QProcess::started, this, &Form::processStarted);
    // capture any errors (do this before you run the process)
    connect(&OProcess, &QProcess::errorOccurred, this, &Form::processError);
    OProcess.startDetached(Command);
    OProcess.waitForFinished();
    qDebug("END  int  Form::RunProcess_Asynch(QString Commnd)");

Christian Ehrlicher

@AnneRanch said in No SIGNAL from startDetached ?:

I was expecting at least "started'.

This is wrong - otherwise it would not have been called 'detached'
The documentation is also very clear about it: "Starts the program set by setProgram() with arguments set by setArguments() in a new process, and detaches from it."

JonB

@AnneRanch
I took the time over at https://forum.qt.io/topic/133498/cannot-get-the-qprocess-started/17 to test and explain that the process.startDetached("hcitool dev>>/tmp/temp") which you believe is working for you is actually not, and is no different from using start() here which also won't work on that string. Did you read it?