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Solution

Simply include this header file

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Trying to use moveToThread() failed with

QObject::moveToThread: Cannot move objects with a parent

So let's capitulate and create a local variable

    QProcess * qProcess = new QProcess();
    if (qProcess == NULL)
    {
       qDebug() << "Out of memory creating QProcess";
       HaiHelper::Logging() << "Out of memory creating QProcess";
       return;
    }
Ouch!! it still fails with :



QObject: Cannot create children for a parent that is in a different thread.
(Parent is QThread(0x7f94e3e946b0), parent's thread is QThread(0x7f94e3f01e60), current thread is QThread(0x7f94e3e946b0)


I just called process->waitForFinished(100) in a loop, then deleted the QProcess object.


QObject::connect: Cannot queue arguments of type 'QProcess::ExitStatus'
(Make sure 'QProcess::ExitStatus' is registered using qRegisterMetaType().)

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Pro:

- Easy to program

Cons:

- Does not work with process->startDetached(). Only works with process->start()
- Only write to the file once the process exit. The file is created but stays empty as long as the process has not completed.

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