Qt: How to close application after starting a new process?

Question

I am starting a new process from my application using QProcess::startDetached(). After this new process is started, I want my application to exit. How do I do that?

@N1ghtLight. A little more detail. I am building on **Mac**. After the new process gets started, my application's window disappeares but remains docked in the dock. I want the application to be fully closed. — user2653062, Oct 15 '14 at 21:11

Max Go · Answer 1 · 2014-10-15T19:58:55.680

3

You can use qApp macro as following: qApp->quit();

QApplication or QCoreApplication header should be included.

void QCoreApplication::quit () [static slot]

Tells the application to exit with return code 0 (success). Equivalent to calling QCoreApplication::exit(0).

edited Oct 15 '14 at 19:58

answered Oct 15 '14 at 19:50

Max Go

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score 1 · Answer 2 · answered Oct 15 '14 at 20:05

1

Keep in mind, that calling QProcess::startDetached() doesn't mean that new process is started. You should check returned value of this method:

bool isStarted = QProcess::startDetached(commandString);
if(isStarted)
    {
    qApp->quit();
    }

answered Oct 15 '14 at 20:05

trivelt

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Qt: How to close application after starting a new process?

2 Answers2