XDefaultString(3)

NAME

       XmbTextListToTextProperty, XwcTextListToTextProperty, Xutf8TextListTo-
       TextProperty, XmbTextPropertyToTextList, XwcTextPropertyToTextList,
       Xutf8TextPropertyToTextList, XwcFreeStringList, XDefaultString - con-
       vert 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, XTextProperty
              *text_prop, char ***list_return, int *count_return);

       int XwcTextPropertyToTextList(Display *display, XTextProperty
              *text_prop, wchar_t ***list_return, int *count_return);

       int Xutf8TextPropertyToTextList(Display *display, 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 concatena-
       tion of the specified list of null-terminated text strings. The input
       text strings must be given in the current locale encoding (for Xmb-
       TextListToTextProperty 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
       XCompoundTextStyle is specified, this encoding is ``STRING'' or ``COM-
       POUND_TEXT'', respectively.  If the style XUTF8StringStyle is speci-
       fied, this encoding is ``UTF8_STRING''.  (This is an extension intro-
       duced by The XFree86 Project, Inc. in their 4.0.2 release. Its presence
       is indicated 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 terminating 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 encod-
       ing, the functions return the number of unconvertible characters.  Each
       unconvertible character is converted to an implementation-defined and
       encoding-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
       representing 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 Xutf8TextProper-
       tyToTextList 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
       locale, 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 unconvertible characters).  Conversion of other encod-
       ings is implementation-dependent.  In all of these error cases, the
       functions do not set any return 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 encod-
       ing of the current locale, the functions return the number of uncon-
       vertible 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,
       XmbTextPropertyToTextList, XwcTextPropertyToTextList and Xutf8TextProp-
       ertyToTextList 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
       returned 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
       default 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 charac-
       ter 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:

       #define   XNoMemory              -1
       #define   XLocaleNotSupported    -2
       #define   XConverterNotFound     -3
       typedef enum {
            XStringStyle,       /* STRING */
            XCompoundTextStyle, /* COMPOUND_TEXT */
            XTextStyle,         /* text in owner's encoding (current locale) */
            XStdICCTextStyle,   /* STRING, else COMPOUND_TEXT */
            XUTF8StringStyle    /* UTF8_STRING */
       } XICCEncodingStyle;

XDefaultString(3)

NAME

SYNTAX

ARGUMENTS

DESCRIPTION

STRUCTURES

SEE ALSO