[Qgis-developer] [plugins] refreshing canvas

[Alexia Mondot]

Hi all,

I have a plugin using a customized version of Dockable Mirror Map.
I use it to display each processing result in a new view.

I get a strange behaviour with my plugin :
Some times, the canvas stays white. A scroll in it is fine to reload it 
and my image is displayed.
I get this problem since the beginning of the development on QIGS 2.2. 
It is for me a "random" problem, because I can't say why I get these 
white canvas. But, when I get it I save the projet with the white view, 
and when reloaded, the canvas is still white.

I've played with canvas.refresh(), canvas renderer flags and even with 
canvas.freeze().
I can't understand the behaviour I get, maybe I have a wrong usage of 
the properties above.
I also thought about triggerRepaint()...

Thanks by advance,
Alexia

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