Draw.Begin/End execution time

Hi all,

in my project I have a cached DrawArea that I need to redraw each time it is 
resized. My code is like this :

Public Sub RefershDrawArea()

  Draw.Begin($drawArea)

  'Drawing methods here ...

  Draw.End

End

That works perfectly, but when I launch the profiler, he tells me that the 
Draw.Begin() method takes a lot of time (around 20 ms).

Is there a way to make this call faster ? Or maybe a way to do only one call 
to Begin() when the user starts resizing and to End() when it stops ?

Regards,
Adrien.

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