Inside Macintosh: Imaging With QuickDraw /

Chapter 6 - Offscreen Graphics Worlds / Offscreen Graphics Worlds Reference

Routines / Creating, Altering, and Disposing of Offscreen Graphics Worlds

DisposeScreenBuffer

The DisposeGWorld procedure uses the DisposeScreenBuffer procedure when disposing of an offscreen graphics world; generally, applications do not need to use DisposeScreenBuffer.

PROCEDURE DisposeScreenBuffer (offscreenPixMap: PixMapHandle);

offscreenPixMap

A handle to an existing offscreen PixMap record.

DESCRIPTION

The DisposeScreenBuffer procedure disposes of the memory allocated for the base address of an offscreen pixel image.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the DisposeScreenBuffer procedure are

Trap macro	Selector
_QDExtensions	$00040011