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QuickDrawGX Fonts

Q: I have certain fonts which cause the driver to fail when they are installed in the system while my spool file is being processed. If I remove these fonts from the system, the problem disappears. It isn't clear whether all of the necessary font information is contained in the spool file once it is generated. If it is, why does it appear that QuickDrawGX looks for the fonts when processing the spool file? Where can I learn about how the QuickDrawGX font mechanism works during page generation and printing?

A: PDDs (page description documents) are transportable and include all the information necessary to image a document. Spool files are not intended to be transportable and assume that the fonts designated in the file continue to be available. For efficiency's sake, they don't spool the fonts, which explains why the fonts are being accessed.

You can learn more about printing from Inside Macintosh: QuickDraw GX Printing Extensions and Drivers , both on the December 94 Dev CD and in print from Addison Wesley. You may also find a number of articles in develop which could help you to learn more about the QuickDraw GX font mechanism.

[May 01 1995]

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