Inside Macintosh: Imaging with QuickDraw

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Contents

• About Offscreen Graphics Worlds
• Using Offscreen Graphics Worlds
• Creating an Offscreen Graphics World
• Setting the Graphics Port for an Offscreen Graphics World
• Drawing Into an Offscreen Graphics World
• Copying an Offscreen Image Into a Window
• Updating an Offscreen Graphics World
• Creating a Mask and a Source Image in Offscreen Graphics Worlds
• Offscreen Graphics Worlds Reference
• Data Structures
• GWorldPtr
• GWorldFlags
• Routines
• Creating, Altering, and Disposing of Offscreen Graphics Worlds
• NewGWorld
• NewScreenBuffer
• NewTempScreenBuffer
• UpdateGWorld
• DisposeGWorld
• DisposeScreenBuffer
• Saving and Restoring Graphics Ports and Offscreen Graphics Worlds
• GetGWorld
• SetGWorld
• GetGWorldDevice
• Managing an Offscreen Graphics World's Pixel Image
• GetGWorldPixMap
• LockPixels
• UnlockPixels
• AllowPurgePixels
• NoPurgePixels
• GetPixelsState
• SetPixelsState
• GetPixBaseAddr
• PixMap32Bit

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