Visual C++:error C2664: 'GetModuleFileNameW' : cannot convert parameter 2 from 'char' to 'LPWCH'

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本文介绍了在 Windows API 中如何正确调用函数的方法。当使用这些函数时，开发者需要了解它们实际上是宏定义到 ANSI 或 Unicode 版本。文章还解释了如何通过修改项目设置来选择使用多字节字符集或 Unicode 字符集。

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A lot of the "functions" of the Windows API are actually macroes to either the ANSI (A) or Unicode (W for wide) version of the function. Depending on your project settings, these macroes will be either DoSomeFunctionA or DoSomeFunctionW when you want to callDoSomeFunction. The portable way would be then to useTCHAR because it is defined aschar for ANSI and wchar_t for Unicode.

If you don't want to compile with Unicode, you can change your project settings toProject Properties -> Configuration Properties -> General -> Character Set -> Use Multibyte Character Set.

If you do want to compile with Unicode, then you should append anA (ex:GetModuleFileNameA) to the necessary function names.