Calculates the width of a glyph 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.
Parameters
- psdoc
Resource identifier of the postscript file
as returned by ps_new().
- ord
The position of the glyph in the font encoding vector.
- fontid
The identifier of the font to be used. If not font is specified
the current font will be used.
- size
The size of the font. If no size is specified the current size
is used.
Return Values
The width of a glyph in points.