如何查找传递给函数的参数的字节数？

Question

I am using mingw64 to compile a DLL .

I have read that:

The name decoration for __sdtdcall-declared functions in MinGW is FunctionName@nn , where @nn is the number of bytes of parameters passed to the function. By this mechanism, it's not possible to call a function with the 'wrong' type, or even with the wrong number of parameters.

My question is as in the title: How to find the number of bytes of parameters passed to the function?

Answer 1

The sizeof(type) function gives the number of bytes for a particulat data type.

Examples:

    See http://en.wikipedia.org/wiki/Sizeof

If your asking about strings ( char * ):

    See http://en.wikipedia.org/wiki/Strlen#strlen