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jtippet edited this page Mar 23, 2019 · 1 revision

ICO311: BitmapCompressionNotSupported

ICO files can contain bitmap files. The bitmaps can be "compressed" in several ways. The IcoTools suite does not support anything other than the default compression of BI_RGB. You will receive error ICO311 if you attempt to manipulate an icon that has any other compression.

If you do encounter such a file, please file an issue on this GitHub and attach the icon(s), so we can improve the tool. Right now, I've simply never seen such an icon in the wild, so I don't have any way to test a decoder for it.

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