QGraphicsScene in a Qt Console Application

[ClintEastwood]

Hi all,

I'm using a qgraphicsscene inside of a qt console application, but it crashes when closing the console window due to some memory problem.

I have reduced my code to the minimum expression to reproduce the error:

#include <QGraphicsScene>
#include <QtCore/QCoreApplication>
 
int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);
 
	QGraphicsScene scene;
 
	return a.exec();
}

#include <QGraphicsScene>
#include <QtCore/QCoreApplication>

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);
	
	QGraphicsScene scene;

	return a.exec();
}

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I can compile this code, but i get this error when I close the window:

error.JPG

If someone is wondering why I'm using a qgraphicsscene in a qt console application, it is due I'm using the scene to detect collisions from real vehicles (I receive their positions from different sockets, and I do not need to display them, I just want to detect if they are going to collide).

Can anyone help me?

[stampede]

QGraphicsScene is a part of QtGui module (or QtWidgets in Qt5). Change QCoreApplication to QApplication and it should work.