QPoint : no such value --> crash

[bozo6919]

Hi everybody,

I tried to use this:
https://github.com/expobrain/tabbedwindow-qt
But in this example, there is a crash after several step :

1. separate one window from another like this :
   
2. Click at the right of the text "red view" (or other text) who is alone, here (on the rectangular black) :
   
   And the program crash.
   It crash on the file "ghostwindow.cpp" in this function :

bool GhostWindow::dragStarted(const QPoint &pos)
{
	return (pos - m_originPos).manhattanLength()
			>= QApplication::startDragDistance();
}

The debugger says: "m_originPos: No such value"
I researched in the net how to know if a QPoint has a value but I couldn't find anything...
Somebody know ?

[bozo6919]

Ok thanks :)

[Christian Ehrlicher]

I would guess that m_ghost inside TabBar::mouseReleaseEvent() is a nullptr or dangling pointer. You should ask the author of the code for help...

[bozo6919]

Ok thanks :)