Pelles C forum

Pelles C => General discussions => Topic started by: czerny on January 20, 2013, 05:32:56 PM

Title: __FILE__ as WCHAR
Post by: czerny on January 20, 2013, 05:32:56 PM

Hallo,

is it possible to get __FILE__ as a WCHAR string?

Title: Re: __FILE__ as WCHAR
Post by: frankie on January 20, 2013, 05:41:51 PM

_T(__FILE__)

Title: Re: __FILE__ as WCHAR
Post by: czerny on January 20, 2013, 06:17:46 PM

I have to include <tchar.h> and define _UNICODE for this to work.

I had tryed to define

#define L(x) L##x

like _T is defined

but L(__FILE__) expands to L__FILE__

why?

Title: Re: __FILE__ as WCHAR
Post by: frankie on January 20, 2013, 07:30:42 PM

The former answer was completely erroneus. My wrong...  :-\

The problem is to make the preprocessor map the value as a string. for this you need a double expansion.
The following code should work

Code: [Select]

#define _L(x)  __L(x)
#define __L(x)  L##x

_L(__FILE__)


Title: Re: __FILE__ as WCHAR
Post by: czerny on January 20, 2013, 10:28:32 PM

Quote from: frankie on January 20, 2013, 07:30:42 PM

for this you need a double expansion.

Ahh! thats the point!

Thank you!