I'm a bit confused as to when I would want to use a
offscreen window
(created via WinCreateOffscreenWindow).
When creating games on desktop systems, it makes
perfect sense to
buffer the graphic in system memory (as opposed to
paging it directly
from disk). On the palm, it doesn't seem like this is
the case. Since
everything is stored in relatively quick memory, there
is no reason
to make an additional copy of the bitmap (in a
offscreen window)
unless I plan to actually modify it. Instead I should
simply copy the
bitmap directly from storage memory.
So.. I guess the real question is this: is there a
speed penalty to be had when directly copying a bitmap
from storage memory to the screen (via functions like
WinDrawBitmap) rather than drawing from an offscreen
window?
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