qt - flickering when using QGLWidget as the viewport of QGraphicsView -


i'm doing project qt 4.8.6 , running on embedded system(x11). in beginning, every thing fine, if open widget has code qgraphicsview.setviewport(new qglwidget) in constructor function, flicker.

if replace qglwidget qwidget, fine. comparing difference between qglwidget , qwidget, have tried this:

qgraphicsscene* scene = new qgraphicsscene(this); qgraphicsview* view = new qgraphicsview (scene,this); view -> setviewport(new qglwidget);   1 view->viewport()->setwindowflags(qt::widget);      2 view->viewport()->setautofillbackground(false);   3 view->viewport()->setattribute(qt::wa_paintonscreen,false);   4 view->viewport()->setattribute(qt::wa_opaquepaintevent);

however doesn't fix issue. issue?


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