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I was able to convert PNG files into ICO files (thanks to Turn pngs to one ICO file ), but now I would like to create an icon "bundle" similar to system32.dll, which contains several individual icons. How can this be done?

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up vote 3 down vote accepted

You need to build a DLL that contains multiple icons as resources. That can be done from Visual Studio via these instructions. Other Windows development tools that can create a DLL should be able to do the same thing.

This could even been done with the resource compiler (rc.exe) that is included in the Windows SDK and manually creating a resource file.

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Looks good. Thank you! – e.James Oct 22 '10 at 18:42

Looks like this will work as well.

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It turns out that there was a Java rewrite of CombineIcons called Icollator, although it still only supports up to 128x128 pixels.

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could u elaborate your answer how icollator is usefull with respective to question – BlueBerry - Vignesh4303 Oct 5 '13 at 12:20

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