_ismbblead, _ismbblead_l
The latest version of this topic can be found at _ismbblead, _ismbblead_l.
Tests a character to determine whether it is a lead byte of a multibyte character.
Syntax
int _ismbblead(
unsigned int c
);
int _ismbblead_l(
unsigned int c,
_locale_t locale
);
Parameters
c
Integer to be tested.
locale
Locale to use.
Return Value
Returns a nonzero value if the integer c is the first byte of a multibyte character.
Remarks
Multibyte characters consist of a lead byte followed by a trailing byte. Lead bytes are distinguished by being in a particular range for a given character set. For example, in code page 932 only, lead bytes range from 0x81 – 0x9F and 0xE0 – 0xFC.
_ismbblead uses the current locale for locale-dependent behavior. _ismbblead_l is identical except that it uses the locale passed in instead. For more information, see Locale.
Generic-Text Routine Mappings
| Tchar.h routine | _UNICODE and _MBCS not defined | _MBCS defined | _UNICODE defined |
|---|---|---|---|
_istlead |
Always returns false | _ismbblead |
Always returns false |
Requirements
| Routine | Required header | Optional header |
|---|---|---|
_ismbblead |
<mbctype.h> or <mbstring.h> | <ctype.h>,* <limits.h>, <stdlib.h> |
_ismbblead_l |
<mbctype.h> or <mbstring.h> | <ctype.h>,* <limits.h>, <stdlib.h> |
* For manifest constants for the test conditions.
For more compatibility information, see Compatibility.
.NET Framework Equivalent
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.