[TIP] Wide Characters, UNICODE on Windows

 

Wider Characters

typedef unsigned short wchar_t ;
wchar_t c = `A' ;
wchar_t * p = L"Hello!" ;
static wchar_t a[] = L"Hello!" ;
wchar_t c = L'A' ;

Wide-Character Library Functions

wchar_t * pw = L"Hello!" ;
size_t __cdecl wcslen (const wchar_t *) ;
iLength = wcslen (pw) ;

 

If an identifier named _UNICODE is defined and the TCHAR.H header file is included in your program, _tcslen is defined to be wcslen:

  #define _tcslen wcslen

  typedef wchar_t TCHAR ;

  #define __T(x) L##x

  #define __T(x) x

If UNICODE isn't defined, _tcslen is defined to be strlen:

  #define _tcslen strlen

  typedef char TCHAR ;

  #define _T(x) __T(x)
  #define _TEXT(x) __T(x)

  _TEXT ("Hello!")

 

winnt.h

  typedef char CHAR ;
  typedef wchar_t WCHAR ;     // wc

 

Windows' String function

ILength = lstrlen (pString) ;
pString = lstrcpy (pString1, pString2) ;
pString = lstrcpyn (pString1, pString2, iCount) ;
pString = lstrcat (pString1, pString2) ;
iComp = lstrcmp (pString1, pString2) ;
iComp = lstrcmpi (pString1, pString2) ;

 

	ASCII	Wide-Character	Generic
Variable Number of Arguments
Standard Version	sprintf	swprintf	_stprintf
Max-Length Version	_snprintf	_snwprintf	_sntprintf
Windows Version	wsprintfA	wsprintfW	wsprintf
Pointer to Array of Arguments
Standard Version	vsprintf	vswprintf	_vstprintf
Max-Length Version	_vsnprintf	_vsnwprintf	_vsntprintf
Windows Version	wvsprintfA	wvsprintfW	wvsprintf

 

from Programming Windows, Fifth Edition (Charles Petzold)