Le 26/11/2011 07:16, nando a écrit : > Thank you Benoit, > A project archive is attached with a simple example > -Fernando > OK: don't call Draw.Begin() / Draw.End() during the Draw event. Qt does not like it. And it is useless... And you should not move the DrawingArea during its Draw event, but during the Timer event. Regards, -- Benoît Minisini