Qt QOpenGLWidget wheelEvent strange behaviour

Question

I have the following class :

class Curve2DOpenGLWidget : public QOpenGLWidget, protected QOpenGLFunctions_3_3_Core {
Q_OBJECT   
public:

    Curve2DOpenGLWi         


        

Answer 1

See Qt::AA_CompressHighFrequencyEvents and Qt::AA_CompressTabletEvents in http://doc.qt.io/qt-5/qt.html#ApplicationAttribute-enum

These are new attributes in Qt 5.