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<head><title>OnPaint</title></head>
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<H2>OnPaint</H2>
<P>
This is now a non-virtual function, with a wxPaintEvent& argument.
Add an EVT_PAINT macro to the event table
for your window.<P>
Your function <I>must</I> create a wxPaintDC object, instead of using GetDC to
obtain the device context.<P>
If you are using a wxScrolledWindow (formerly wxCanvas), you should call
PrepareDC(dc) to set the correct translation for the current scroll position.<P>
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