XmbTextListToTextProperty(3) XLIB FUNCTIONS XmbTextListToTextProperty(3)
NAME
XmbTextListToTextProperty, XwcTextListToTextProperty, Xutf8TextListTo-
TextProperty, XmbTextPropertyToTextList, XwcTextPropertyToTextList,
Xutf8TextPropertyToTextList, XwcFreeStringList, XDefaultString - convert
text lists and text property structures
SYNTAX
int XmbTextListToTextProperty(Display *display, char **list, int count,
XICCEncodingStyle style, XTextProperty *text_prop_return);
int XwcTextListToTextProperty(Display *display, wchar_t **list, int
count, XICCEncodingStyle style, XTextProperty *text_prop_return);
int Xutf8TextListToTextProperty(Display *display, char **list, int
count, XICCEncodingStyle style, XTextProperty *text_prop_return);
int XmbTextPropertyToTextList(Display *display, _Xconst XTextProperty
*text_prop, char ***list_return, int *count_return);
int XwcTextPropertyToTextList(Display *display, _Xconst XTextProperty
*text_prop, wchar_t ***list_return, int *count_return);
int Xutf8TextPropertyToTextList(Display *display, _Xconst XTextProperty
*text_prop, char ***list_return, int *count_return);
void XwcFreeStringList(wchar_t **list);
char *XDefaultString(void)
ARGUMENTS
display Specifies the connection to the X server.
list Specifies a list of null-terminated character strings.
count Specifies the number of strings specified.
style Specifies the manner in which the property is encoded.
text_prop_return
Returns the XTextProperty structure.
text_prop Specifies the XTextProperty structure to be used.
list_return
Returns a list of null-terminated character strings.
count_return
Returns the number of strings.
list Specifies the list of strings to be freed.
DESCRIPTION
The XmbTextListToTextProperty, XwcTextListToTextProperty and
Xutf8TextListToTextProperty functions set the specified XTextProperty
value to a set of null-separated elements representing the concatenation
of the specified list of null-terminated text strings. The input text
strings must be given in the current locale encoding (for XmbTextListTo-
TextProperty and XwcTextListToTextProperty), or in UTF-8 encoding (for
Xutf8TextListToTextProperty).
The functions set the encoding field of text_prop_return to an Atom for
the specified display naming the encoding determined by the specified
style and convert the specified text list to this encoding for storage
in the text_prop_return value field. If the style XStringStyle or XCom-
poundTextStyle is specified, this encoding is “STRING” or “COM-
POUND_TEXT”, respectively. If the style XUTF8StringStyle is specified,
this encoding is “UTF8_STRING”. (This is an extension introduced by The
XFree86 Project, Inc., in their 4.0.2 release. Its presence is indi-
cated by the macro X_HAVE_UTF8_STRING.) If the style XTextStyle is
specified, this encoding is the encoding of the current locale. If the
style XStdICCTextStyle is specified, this encoding is “STRING” if the
text is fully convertible to STRING, else “COMPOUND_TEXT”. A final ter-
minating null byte is stored at the end of the value field of
text_prop_return but is not included in the nitems member.
If insufficient memory is available for the new value string, the func-
tions return XNoMemory. If the current locale is not supported, the
functions return XLocaleNotSupported. In both of these error cases, the
functions do not set text_prop_return.
To determine if the functions are guaranteed not to return XLocaleNot-
Supported, use XSupportsLocale.
If the supplied text is not fully convertible to the specified encoding,
the functions return the number of unconvertible characters. Each un-
convertible character is converted to an implementation-defined and en-
coding-specific default string. Otherwise, the functions return Suc-
cess. Note that full convertibility to all styles except XStringStyle
is guaranteed.
To free the storage for the value field, use XFree.
The XmbTextPropertyToTextList, XwcTextPropertyToTextList and
Xutf8TextPropertyToTextList functions return a list of text strings rep-
resenting the null-separated elements of the specified XTextProperty
structure. The returned strings are encoded using the current locale
encoding (for XmbTextPropertyToTextList and XwcTextPropertyToTextList)
or in UTF-8 (for Xutf8TextPropertyToTextList). The data in text_prop
must be format 8.
Multiple elements of the property (for example, the strings in a dis-
joint text selection) are separated by a null byte. The contents of the
property are not required to be null-terminated; any terminating null
should not be included in text_prop.nitems.
If insufficient memory is available for the list and its elements, Xmb-
TextPropertyToTextList, XwcTextPropertyToTextList and Xutf8TextProperty-
ToTextList return XNoMemory. If the current locale is not supported,
the functions return XLocaleNotSupported. Otherwise, if the encoding
field of text_prop is not convertible to the encoding of the current lo-
cale, the functions return XConverterNotFound. For supported locales,
existence of a converter from COMPOUND_TEXT, STRING, UTF8_STRING or the
encoding of the current locale is guaranteed if XSupportsLocale returns
True for the current locale (but the actual text may contain unconvert-
ible characters). Conversion of other encodings is implementation-de-
pendent. In all of these error cases, the functions do not set any re-
turn values.
Otherwise, XmbTextPropertyToTextList, XwcTextPropertyToTextList and
Xutf8TextPropertyToTextList return the list of null-terminated text
strings to list_return and the number of text strings to count_return.
If the value field of text_prop is not fully convertible to the encoding
of the current locale, the functions return the number of unconvertible
characters. Each unconvertible character is converted to a string in
the current locale that is specific to the current locale. To obtain
the value of this string, use XDefaultString. Otherwise, XmbTextProper-
tyToTextList, XwcTextPropertyToTextList and Xutf8TextPropertyToTextList
return Success.
To free the storage for the list and its contents returned by Xmb-
TextPropertyToTextList or Xutf8TextPropertyToTextList, use
XFreeStringList. To free the storage for the list and its contents re-
turned by XwcTextPropertyToTextList, use XwcFreeStringList.
The XwcFreeStringList function frees memory allocated by XwcTextProper-
tyToTextList.
The XDefaultString function returns the default string used by Xlib for
text conversion (for example, in XmbTextPropertyToTextList). The de-
fault string is the string in the current locale that is output when an
unconvertible character is found during text conversion. If the string
returned by XDefaultString is the empty string (""), no character is
output in the converted text. XDefaultString does not return NULL.
The string returned by XDefaultString is independent of the default
string for text drawing; see XCreateFontSet to obtain the default string
for an XFontSet.
The behavior when an invalid codepoint is supplied to any Xlib function
is undefined.
The returned string is null-terminated. It is owned by Xlib and should
not be modified or freed by the client. It may be freed after the cur-
rent locale is changed. Until freed, it will not be modified by Xlib.
The functions Xutf8TextListToTextProperty and Xutf8TextPropertyTo-
TextList are extensions introduced by The XFree86 Project, Inc., in
their 4.0.2 release. Their presence is indicated by the macro
X_HAVE_UTF8_STRING.
STRUCTURES
The XTextProperty structure contains:
typedef struct {
unsigned char *value; /* property data */
Atom encoding; /* type of property */
int format; /* 8, 16, or 32 */
unsigned long nitems; /* number of items in value */
} XTextProperty;
The XICCEncodingStyle structure contains:
#de- XNoMemory -1
fine
#de- XLocaleNotSupported -2
fine
#de- XConverterNotFound -3
fine
typedef enum {
XStringStyle, /* STRING */
XCompoundTextStyle, /* COMPOUND_TEXT */
XTextStyle, /* text in owner's encoding (current locale) */
XStdICCTextStyle, /* STRING, else COMPOUND_TEXT */
XUTF8StringStyle /* UTF8_STRING */
} XICCEncodingStyle;
SEE ALSO
XSetTextProperty(3), XStringListToTextProperty(3)
Xlib - C Language X Interface
X Version 11 libX11 1.8.12 XmbTextListToTextProperty(3)
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