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Question: For C++ extensions to draw LICE graphics inside REAPER windows, plain subclassing works well on Windows, Linux, and on macOS when “Optimized drawing” is DISabled. (I.e. when WM_PAINT is received, first InvalidateRect and call original WinProc, then blit LICE bitmap into windowDC.) But on macOS with optimized drawing ENabled, there are glitches – and sometimes the blitted image is not visible at all. Is there a clever trick to getting this to work? (What goes on under the hood with optimized drawing?)
Asked by Julian (102.249.1.x) on April 28 2020, 9:37am
Reply on April 28 2020, 8:26pm:
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