Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Constants and Data Types for Macintosh Printing Manager Compatibility

Print-Head Motions for the Universal Print Structure

You can use the print-head motion constants to define the value of the headMotion field in the universal print structure.

enum {
   gxUnidirectionalMotion  = 0,
   gxBidirectionalMotion   = 1
};

Constant descriptions

gxUnidirectionalMotion

The driver needs to move the print head in only one direction for this print job.

gxBidirectionalMotion

The driver needs to move the print head in both directions for this print job.

Main | Page One | What's New | Apple Computer, Inc. | Find It | Contact Us | Help