How does the API function...
Declare Function PtInRegion Lib "gdi32" Alias "PtInRegion" (ByVal hRgn As Long, ByVal x As Long, ByVal y As Long) As Long
...work?
I don't mean "how do I use it?" though, I already know that
What algorithm is it based on? Does anyone have code for a similar algorithm?





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