Answer: To get the first line of text from a string created left-to-right
char *str;
XmString xmstr;
/* stuff to create xmstr */
...
/* set str to point to the text */
XmStringGetLtoR(xmstr, XmSTRING_DEFAULT_CHARSET, &str);
/* use the string */
...
/* and reclaim space */
XtFree(str);
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