Xmstringwidth a compound string function that returns the width of the widest line in a compound string "xmstringwidth" "compound string functions" "xmstringwidth"
#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.
Specifies the render table
Specifies the string
Returns the width of the compound string.