windows-xp/Source/XPSP1/NT/com/ole32/stg/common/w4io.h

/***
*w4io.h - fake FILE structure for Win 4 printf/sprintf/debug printf support
*
*/

#if defined(M_I386) || defined(FLAT)
#  ifndef FLAT
#    define FLAT
#  endif
#elif !defined(M_I86LM)
#  error Must be FLAT or LARGE model.
#endif

#ifndef NULL
#  define NULL 0
#endif

#ifndef _WCHAR_T_DEFINED
typedef unsigned short wchar_t;
#define _WCHAR_T_DEFINED
#endif

struct w4io
{
    union
    {
	struct
	{
	    wchar_t *_pwcbuf;	// wchar_t output buffer
	    wchar_t *_pwcstart;
	} wc;
	struct
	{
	    char *_pchbuf;	// char output buffer
	    char *_pchstart;
	} ch;
    } buf ;
    unsigned int cchleft;	// output buffer character count
    void (_cdecl *writechar)(int ch,
			     int num,
			     struct w4io *f,
			     int *pcchwritten);
};

#define pwcbuf		buf.wc._pwcbuf
#define pwcstart	buf.wc._pwcstart
#define pchbuf		buf.ch._pchbuf
#define pchstart	buf.ch._pchstart

#define REG1 register
#define REG2 register

/* prototypes */
int _cdecl w4iooutput(struct w4io *stream, const char *format, va_list argptr);