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Important: The information in this document is obsolete and should not be used for new development.

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Inside Macintosh: Imaging With QuickDraw /
Chapter 3 - QuickDraw Drawing / QuickDraw Drawing Reference

Copying Images

QuickDraw provides three procedures for copying portions of bitmaps from one graphics port or offscreen graphics world into another graphics port. The CopyBits procedure allows you to copy using source modes and to clip and resize during the copy operation. The CopyMask procedure allows you to mask areas where you want the copy operation to occur. These procedures also allow you to use pixel maps instead of bitmaps when your application runs on systems supporting Color QuickDraw.

The CopyDeepMask procedure, which is available to basic QuickDraw only in System 7, combines the functionality of both CopyBits and CopyMask.


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© Apple Computer, Inc.
7 JUL 1996