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Important: This document is part of the Legacy section of the ADC Reference Library. This information should not be used for new development.

Current information on this Reference Library topic can be found here:

Changing Scaling, Flipping, and Resolution


Important for all Apple Printing and Graphics Developers:

The information in this Technical Q & A is still relevant up to and including Mac OS 7.6 with QuickDraw GX 1.1.5. Beginning with the release of Mac OS 8.0, however, Apple plans to deliver a system which incorporates QuickDraw GX graphics and typography only. QuickDraw GX printer drivers and GX printing extensions will not be supported in Mac OS 8.0 or in future Mac OS releases. Apple's goal is to simplify the user experience of printing by unifying the Macintosh graphic and printing architectures and standardizing on the classic Printing Manager.

For details on Apple's official announcement, refer to </dev/technotes/gxchange.html>

Q: I am developing a customized raster GX driver that allows changes in scaling, flipping and/or resolution. Are there any known limitations regarding changes in scaling, flipping, and/or resolution?

A: We are not aware of any problems with raster drivers that allow changes in scaling, flipping, and/or resolution. If you're having a problem, it is probably somewhere in your code that does MoveMapping and ScaleMapping.

[Aug 01 1995]


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