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Inside Macintosh: Apple Game Sprockets Guide /
Chapter 2 - DrawSprocket / DrawSprocket Reference
DrawSprocket Functions / Using Alternate Buffers


DSpContext_GetOverlayAltBuffer

You can use the DSpContext_GetOverlayAltBuffer function to get the current overlay associated with a context.

OSStatus DSpContext_GetOverlayAltBuffer (
DSpContextReference inContext,
DSpAltBufferReference *outOverlay);
inContext
A reference to the context whose overlay you want to get.
outOverlay
On exit, a reference to the alternate buffer that holds the overlay.
function result
A result code.
DESCRIPTION
The DSpContext_GetOverlayAltBuffer function takes, in the inContext parameter, a reference to a context and returns, in the outOverlay parameter, a reference to the alternate buffer that holds the current overlay for that context.

CALLING RESTRICTIONS
Do not call this function during an interrupt.


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© Apple Computer, Inc.
2 JUL 1996