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Thread: [RESOLVED] Using GDIplus, how to find out the designated transparent color in an 8-BPP PNG file?

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    Resolved [RESOLVED] Using GDIplus, how to find out the designated transparent color in an 8-BPP PNG file?

    The attached ZIP contains an 8-BPP PNG file which has a designated transparent color. If I use GDIplus, how can I ascertain (i) whether the file has a designated transparent color; and (ii) if affirmative, what is that designated transparent color in file?

    If I load the file with GDIplus, supplying a DIB or PictureBox with a chessboard background, I get a returned DIB/PictureBox per screenshot below:
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