Anyone got a nice little CopyRect type of function

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Grey Alien

Blimey lots of responses, thanks a lot! In the end I did this, which works fine:

' -----------------------------------------------------------------------------
' ccCopyRect
' -----------------------------------------------------------------------------
Function ccCopyRect(image:TImage,x,y,w,h,frame=0)
	'Draws a part of an image by using a viewport.
	SetViewport x,y,w,h
	DrawImage(image,x,y,frame)
	SetViewport 0,0,screenwidth, screenheight
End Function

Anyway see anything wrong with this? It should be cross platform too right?