Char in MFC

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character

  • char：
    prefix with str
    ANSI: strcat( ), strcpy( ), strlen( )
  • wchar_t :
    prefix with wcs
    Unicode: wcscat(), wcscpy(), wcslen()
  • WCHAR:
    typedef wchar_t WCHAR
    WCHAR == wchar_t
    macro _UNICODE in c, macro UNICODE in windows
    if no macro defined, system use ANSI compiling and run.
  • TCHAR:
    Condition define type
    If macro UNICODE defined
    typedef wchar_t TCHAR;
    If not
    typedef char TCHAR;

checkout

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#ifdef   UNICODE
typedef   wchar_t   TCHAR;     
#else
typedef   unsigned   char   TCHAR;
#endif

typedef   unsigned   char   CHAR;
typedef   unsigned   wchar_t   WCHAR;

From VS2005 C++’s encoding use UNICODE in default.

translate

char -> wchar_t

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wchar_t* Util::CharToWchar(char* c)
{
  int length = strlen(c) + 1;   // the text end \0 [0x00] [EOF]
  wchar_t *wide = (wchar_t*)malloc(sizeof(wchar_t)*length);
  memset(t, 0, length * sizeof(wchar_t));
  MultiByteToWideChar(CP_ACP, 0, c, strlen(c), wide, length);
  //wcout << wide << endl;
  return wide;
}

wchar_t -> char

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char* Util::WcharToChar(wchar_t* wc)
{
  int length = wcslen(wc) + 1;
  	cout << length1 << endl;
  	char *c = new char[length1];
  	WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK, wc, -1,
      c, length, NULL, NULL);
  	cout << c << endl;
    return c;
}