XmStringWidth — A compound string function that returns the width of
the widest line in a compound string
#include <Xm/Xm.h>
Dimension XmStringWidth(
XmRenderTable rendertable,
XmString string);
XmStringWidth returns the width, in pixels, of the widest line in the
provided compound string.
rendertable
Specifies the render table
string Specifies the string
Returns the width of the compound string.
XmStringCreate(3).
XmStringWidth(library call)