SYNOPSIS
#include <pslib.h>
float PS_stringwidth(PSDoc *psdoc, const char *text, int fontid, float size)
DESCRIPTION
Calculates the width of a string in points if it was output in the given font and font size. This function needs an Adobe font metrics file to calculate the precise width. If kerning is turned on, it will be taken into account.
RETURN VALUE
Width of a string in points.