_setmbcp
Sets a new multibyte code page.
int_setmbcp(intcodepage**);**
| Routine | Required Header | Compatibility |
| _setmbcp | <mbctype.h> | Win 95, Win NT |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
| LIBC.LIB | Single thread static library, retail version |
| LIBCMT.LIB | Multithread static library, retail version |
| MSVCRT.LIB | Import library for MSVCRT.DLL, retail version |
Return Value
_setmbcp returns 0 if the code page is set successfully. If an invalid code page value is supplied for codepage, the function returns –1 and the code page setting is unchanged.
Parameter
codepage
New code page setting for locale-independent multibyte routines
Remarks
The _setmbcp function specifies a new multibyte code page. By default, the run-time system automatically sets the multibyte code page to the system-default ANSI code page. The multibyte code page setting affects all multibyte routines that are not locale-dependent. However, it is possible to instruct _setmbcp to use the code page defined for the current locale (see the following list of manifest constants and associated behavior results). For a list of the multibyte routines that are dependent on the locale code page rather than the multibyte code page, see Interpretation of Multibyte-Character Sequences.
The multibyte code page also affects multibyte-character processing by the following run-time library routines:
| _exec functions | _mktemp | _stat |
| _fullpath | _spawn functions | _tempnam |
| _makepath | _splitpath | tmpnam |
In addition, all run-time library routines that receive multibyte-character argv or envp program arguments as parameters (such as the _exec and _spawn families) process these strings according to the multibyte code page. Hence these routines are also affected by a call to _setmbcp that changes the multibyte code page.
The codepage argument can be set to any of the following values:
_MB_CP_ANSI Use ANSI code page obtained from operating system at program startup
_MB_CP_LOCALE Use the current locale’s code page obtained from a previous call to setlocale
_MB_CP_OEM Use OEM code page obtained from operating system at program startup
_MB_CP_SBCS Use single-byte code page. When the code page is set to _MB_CP_SBCS, a routine such as _ismbblead always returns false.
Any other valid code page value, regardless of whether the value is an ANSI, OEM, or other operating-sytem – supported code page.