Inside Macintosh: QuickDraw GX Printing /

Chapter 1 - Introduction to Printing With QuickDraw GX / Using Printing-Related Objects With Other QuickDraw GX Objects

Tag Objects

QuickDraw GX allows you to directly control the way that printing is performed through the use of synonyms stored in tag objects. You specify the action to take in a tag object and attach it to another object, such as a shape, ink, or transform. Here are two of the uses of tag objects:

• Halftone specifications can be placed in a tag that is referred to by a shape's ink object. When the shape is drawn, QuickDraw GX draws it with the specified ink using the halftone in the ink's tag object.
• PostScript operators can be placed in a tag that is referred to by the shape itself or by its style, ink, or transform objects. When the shape is drawn, the PostScript operators are used directly, in place of QuickDraw GX data.

For information about how to set up and attach tag objects to shapes, see the tag objects chapter of Inside Macintosh: QuickDraw GX Objects.

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