Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 12 - Draw Context Objects / Draw Context Objects Reference

Data Structures

Pixmap Draw Context Structure

QuickDraw 3D defines the pixmap draw context data structure to maintain information that is specific to pixmap draw contexts. The pixmap draw context data structure is defined by the TQ3PixmapDrawContextData data type.

typedef struct TQ3PixmapDrawContextData {
   TQ3DrawContextData                  drawContextData;
   TQ3Pixmap                           pixmap;
} TQ3PixmapDrawContextData;

Field Description

drawContextData

A draw context data structure defining basic information about the draw context.

pixmap

A pixmap (that is, a pixel map in memory). This pixmap is assumed to have a pixel size of 24 bits.