how to force wxClientDC complete drawing

[olivier.corrio at gmail.com]

Hi,
i m on linux wxGTK 2.8.0
I draw a picture on background by using erase event handler and i
always write the whole picture but it seems that only the damaged part
is really redrawn (not the whole picture as i expected). How can i
force the whole frame to be redrawn ? the style is already
wxFULL_REPAINT_ON_RESIZE and i even test DestroyClippingRegion() on
wxDC i use (clientDC as it is in eraseevent handler).
Regards Olivier