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Why do the XP Icons when drawn using Graphics.DrawImage not draw transparently?

April 26, 2017draw drawn icons transparently XP

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Why do the XP Icons when drawn using Graphics.DrawImage not draw transparently?

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Note that it’s only the ImageList class that can draw an Icon with alpha channel properly. So, instead of using the Graphics.DrawImage method, first associate this icon to a ImageList and then use the ImageList.Draw method to draw the icon. Also, note that this is possible only in XP with XP Themes enabled for that application.