Purpose: | Create region from a bitmap
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OS: | windows (a SDK project)
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Place: | example/003/src
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Notice: |
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Usage: | use FCWin32::ConvertAlphaImageToHRGN to create HRGN from a 32bpp image. This function determinate whether a point in region by test pixel's alpha value, if the pixel's alpha value == 0, the point outter of region, otherwise point in region. and the image's R-G-B channel be ignored this demo load a tga image (in resource) then convert to 8bpp, as a 32bpp image's alpha channel |