Re: QGraphics... and Qwt

On Monday 18 August 2008 15:16, Joey Mukherjee wrote:

> Has anyone else tried using the new QGraphics* (Widgets on a Canvas)
> series of routines in the new Qt 4.4+ with Qwt?

No ( at least not me ), but I would be interested in the results of your 
tests - especially, what happens on a OpenGL canvas.

> We tried it, and it seems to work okay, except for mouse-release
> events with things such as the QwtPlotZoomer (panning and picking
> exhibit the same problem).  You will be zooming, and it will never
> register that you released the mouse button so you rubber-band will
> always be "band-ing" around.  If you hit Return, it will zoom.  Strange!

There is a lot of event redirection going on between QAbstractScrollArea and 
its viewport. Maybe the MouseRelease event gets lost before it finds its way 
into the eventFilter of the picker.

Uwe

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