Macros with G++

[Michael Meier]

Hi,

I'm not sure weather this is a compiler error or sonething different. The 
code:

#include <stdio.h>
#include <wchar.h>

//#define WIDE(x) L#x doesnt work
#define WIDE(x) L##x

int main( void )
{
  //wchar_t test = WIDE( Hello World ); doesnt work
   wchar_t* test = WIDE( "Hello World" );
   return 4;
}

The question is why the first approach doesn't work. g++ complains that L 
has not been defined. One hash should expand the variable and put it into 
quotes whereas two hashes just expand the variable. It works with two but 
not with one hash. Any explanation is welcome!