isgraph, iswgraph, _isgraph_l, _iswgraph_l
Determine if an integer represents a graphical character.
int isgraph(
int c
);
int iswgraph(
wint_t c
);
int _isgraph_l(
int c,
_locale_t locale
);
int _iswgraph_l(
wint_t c,
_locale_t locale
);
Parameters
- c
Integer to test.
Return Value
Each of these routines returns nonzero if c is a particular representation of a printable character other than a space. isgraph returns a nonzero value if c is a printable character other than a space. iswgraph returns a nonzero value if c is a printable wide character other than a wide character space. Each of these routines returns 0 if c does not satisfy the test condition.
When used with a debug CRT library, isgraph will display a CRT assert if passed a parameter that is not EOF or in the range of 0 through 0xFF. When used with a debug CRT library, isgraph will use the parameter as an index into an array, with undefined results if the parameter is not EOF or in the range of 0 through 0xFF.
The versions of these functions with the _l suffix are identical except that they use the locale passed in instead of the current locale for their locale-dependent behavior. For more information, see Locale.
Generic-Text Routine Mappings
TCHAR.H routine |
_UNICODE & _MBCS not defined |
_MBCS defined |
_UNICODE defined |
|---|---|---|---|
_istgraph |
isgraph |
iswgraph |
|
_istgraph_l |
_isgraph_l |
_iswgraph_l |
Requirements
Routine |
Required header |
|---|---|
isgraph |
<ctype.h> |
iswgraph |
<ctype.h> or <wchar.h> |
_isgraph_l |
<ctype.h> |
_iswgraph_l |
<ctype.h> or <wchar.h> |
For additional compatibility information, see Compatibility in the Introduction.
.NET Framework Equivalent
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.