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Created April 16, 2023 15:08
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innosetup import external library for specific call
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excerpt.iss
[Files]
;for the install package: VersionInfo.dll
Source: "VersionInfo.dll"; Flags: dontcopy;
[Code]
function GetWindowsBuildNumber: Integer;
external '_GetWindowsBuildNumber@0@files:VersionInfo.dll stdcall delayload';
//in a function
BuildNumber := GetWindowsBuildNumber();
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jglathe commented Apr 16, 2023 •
edited

That was quite a session with ChatGPT and StackOverflow to hack this out. For the real name in the dll you need DependencyWalker. The dll will only be loaded at installation for something you can't do in InnoSetup. It's a good idea to compile the dll for x86. Turns out you can do this directly (getting the Build Number), but maybe it's useful for a case where you can't.

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