Question

Is there any method? My computer is AMD64.

::std::string str; BOOL loadU(const wchar_t* lpszPathName, int flag = 0); 

When I used:

loadU(&str); 

the VS2005 compiler says:

Error 7 error C2664:: cannot convert parameter 1 from 'std::string *__w64 ' to 'const wchar_t *' 

How can I do it?

Answer 1

If you have a std::wstring object, you can call c_str() on it to get a wchar_t*:

std::wstring name( L'Steve Nash' ); const wchar_t* szName = name.c_str(); 

Since you are operating on a narrow string, however, you would first need to widen it. There are various options here; one is to use Windows’ built-in MultiByteToWideChar routine. That will give you an LPWSTR, which is equivalent to wchar_t*.