Having trouble with QGraphicsView

**mrwooster** · 11th August 2009, 11:48

I have set the cach mode to cachBackground but it still doesn't make any difference.... nothing is showing up....

Also, the QGraphicsScene does not have a setOpacity() function, that is only implemented by QGraphicsItem.....

I don't think it is an opacity issue as even the text and line is not showing up....

**wagmare** · 11th August 2009, 11:59

if not setOpacity() then alpha value u can set in QColor ()

ok did u see the padnavigator example ... they set pixmap for the graphicsView ... see where the problem arise ..

**mrwooster** · 11th August 2009, 12:14

I really appreciate your help wagmare, but unfortunaltely I am still having problems...

I have had a look through the padnavigator example but I dont see where I have implemented it any different apart from the fact that they made a subclass of QGraphicsView...

Also... if I remove the QGraphicsScene element, it still does not show a background.... so its not an opacity problem