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as the tittle says, i could not find any relationship or how to pass them to signals and slots.

Anyone could give me a quick tutorial? or Introduction? :)

Alexander Baťka
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1 Answers1

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You have to get an QObject-derived class object from the QScopedPointer by QScopedPointer::data() method and use it:

QScopedPointer<QThread> p(new QThread);
connect(p.data(), SIGNAL(finished()), SLOT(onThreadFinish()));

QScopedPointer class reference

VP.
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  • well now i am getting this error code QWidget: Must construct a QApplication before a Qwidget. I might know where the problem is. Related to that, can i create global QScoped Pointer? – Alexander Baťka Aug 13 '15 at 13:02
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    @AlexanderBafka: You cannot create static/global QPixmap/QWidget instances, as they require a QApplication to be constructed before. That’s unrelated to QScopedPointers though and would also happen with a raw pointer. – Frank Osterfeld Aug 13 '15 at 16:18
  • Global instances should be created with `Q_GLOBAL_STATIC`: they are created in a thread-safe manner, and are instantiated on the first use - after `QApplication` is alive and well. – Kuba hasn't forgotten Monica Aug 13 '15 at 21:35