homepage

Why is the __W macro needed?
Please don't call it WCHAR:
- it conflicts with a same-named macro on Windows
- you are applying it to strings, not characters
FWIW, the compiler doesn't conform to standard C if it rejects this code. 6.4.5p4 says
 [#4] In translation phase 6, the multibyte character
 sequences specified by any sequence of adjacent character
 and wide string literal tokens are concatenated into a
 single multibyte character sequence. If any of the tokens
 are wide string literal tokens, the resulting multibyte
 character sequence is treated as a wide string literal;
 otherwise, it is treated as a character string literal.