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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?

4 Answers 4

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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 like this will work as well.

http://convertico.org/Multi_Image_to_one_icon/

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    This uses a Flash-based file uploader, and does not work any more.
    – Sebastian
    Mar 4, 2021 at 10:24
  • Are there any alternatives that don't use Flash?
    – Logic1
    Oct 17, 2021 at 11:31
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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 Oct 5, 2013 at 12:20
  • This doesn't work, the output file only contains one of the icons. Nov 6, 2021 at 12:31
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There is a program could meet your requirement. It's GConvert: https://www.gdgsoft.com/gconvert

But so far, this freeware only support 256x256 size. If you ok with that then you may wanna give it a shot.

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