QApplication can't be receiver of its own signal aboutToExit?
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I got some cleanup job before app exit, by following document, I built my own QMyApplication with a private slot cleanup() and got it connected to aboutToExit signal.
However, I found cleanup() was never called.
Then I added another class QMyApplicationHelper (definitely inherited from QObject) to receive aboutToExit instead. That worked.
I was wondering if QApplication can't be receiver of its own signal aboutToExit.
Furthermore, I also tried an idle processing by use of a QTimer with 0 timeout, like
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mIdleTrigger = new QTimer(this); // this was QMyApplication itself
connect(mIdleTrigger, SIGNAL ( timeout( ) ), this, SLOT ( processIdle( ) ));
mIdleTrigger->start(0);
@It still never worked until I had QMyApplicationHelper be receiver of timer.
I didn't figure out why there has to be a helper class to take over role of signal receiver.
Thx.
[EDIT: code highlighting, Volker]
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I didn't follow you, how to check out that? I'm quite new to Qt.
[quote author="Franzk" date="1294215318"]Did you check for run-time connect errors?[/quote]
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I made a stupid mistake, I forgot to declare "slots", debugging output revealed that.
Really appreciated.[quote author="Franzk" date="1294216225"]Check your debug output. It might be that there is some warning about a failed connection. Also try checking the result of the connect call (it returns true on success).[/quote]