XmTextGetSubstringWcs — A Text function that
retrieves a portion of a wide character internal text buffer
"XmTextGetSubstringWcs" "Text functions"
"XmTextGetSubstringWcs"
#include <Xm/Text.h>
int XmTextGetSubstringWcs(
Widget widget,
XmTextPosition start,
int num_chars,
int buffer_size,
wchar_t *buffer);
XmTextGetSubstringWcs retrieves a copy of a portion of the
internal text buffer of a Text widget that is stored in a wide character
format. The function copies a specified number of characters from a given
start position in the internal text buffer into a buffer provided by the
application. A NULL terminator is placed at the end of the copied data.
- widget
- Specifies the Text widget ID.
- start
- Specifies the beginning character position from which the data will be
retrieved. This is an integer number of characters from the beginning of
the text buffer. The first character position is 0 (zero).
- num_chars
- Specifies the number of wchar_t characters to be copied into the
provided buffer.
- buffer_size
- Specifies the size of the supplied buffer as a number of wchar_t
storage locations. The minimum size is num_chars + 1.
- buffer
- Specifies the wide character buffer into which the internal text buffer
will be copied.
For a complete definition of Text and its associated resources,
see XmText(3).
- XmCOPY_SUCCEEDED
- The function was successful.
- XmCOPY_FAILED
- The function failed because it was unable to copy the specified number of
characters into the buffer provided. The buffer size may be insufficient.
The contents of buffer are undefined.
- XmCOPY_TRUNCATED
- The requested number of characters extended beyond the internal buffer.
The function copied characters between start and the end of the
widget's buffer and terminated the string with a NULL terminator; fewer
than num_chars characters were copied.