How to merge font subset and font delta extracted from EMF spool file.

From: delasac@xxxxxxxxxxxxxxxxxxx
Date: Fri, 18 Jul 2008 11:02:40 -0700 (PDT)

Hi,
I am extracting fonts from EMF spool files.

The Enhanced Metafile Spool Format Specification (http://
msdn.microsoft.com/en-us/library/cc204694.aspx) defines 2 records for
TrueType font subset and delta:

EMRI_SUBSET_FONT and EMRI_DELTA_FONT

I have no problem extracting the data for those 2 records. My problem
is I do not know what to do with the extracted data, and the spec says
nothing about that.
The only thing that is said is: "An EMRI_DELTA_FONT record defines new
glyphs to be merged with data from a preceding EMRI_SUBSET_FONT
record"

How do I merge the data from those 2 records?

Thanks in advance for your help

Charles
.

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