Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Constants and Data Types for the Raster Imaging System

Raster Plane Options

The raster plane options enumeration defines constants that you can use in the planeOptions field of the raster offscreen plane setup structure.

enum {
   gxDefaultOffscreen      = 0x00000000,
   gxDontSetHalftone       = 0x00000001,
   gxDotTypeIsDitherLevel  = 0x00000002
};
typedef long gxRasterPlaneOptions;

Constant descriptions

gxDefaultOffscreen

The driver allocates bits for the print job and creates halftone values. This is the default value.

gxDontSetHalftone

The driver does not call the GXSetViewPortHalftone function.

gxDotTypeIsDitherLevel

The driver calls the GXSetViewPortDither function and uses the gxDotType constant as the dithering level.

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