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Difference between "A" and "W" in API programming?


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Heya guys. I've started using Windows API calls and I'm wondering what the "A" and "W" means in the functions.

An example is the InstallHinfSection function in setupapi.dll.

There is 3 functions in the setupapi.dll file...

InstallHinfSection

InstallHinfSectionA

InstallHinfSectionW

What are the differences?

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