Raster Package Structure(IM:XP)

Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 6 - Printing Resources / Printing Resources Reference

Raster Package Structure
The raster package structure, of data type gxRasterPackageRec, defines the format of the raster package ('rpck') resource.
struct gxRasterPackageRec {
   Ptr      bufferSize;
   short    colorPasses;
   short    headHeight;
   short    numberPasses;
   short    passOffset;
   gxRasterPackgeOptions
            packageOptions;
};

typedef struct gxRasterPackageRec gxRasterPackageRec, 
*gxRasterPackagePtr, **gxRasterPackageHdl;
Field Description

bufferSize
The buffer size for packaging. This value must be greater than or equal to the maximum head-pass size.
colorPasses
The number of color passes. This value is typically 1 for monochrome printers and 4 for CMYK printers.
headHeight
The height of the print head, in pixels.
numberPasses
The number of passes it takes to print one print head of data.
passOffset
The offset between passes, in pixels.
packageOptions
The packaging options. The constants that you can use in this field are the values of the raster package options enumeration, described in the next section. You can combine several of the constants into one value for this field.