Retired Document

Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.

Relevant replacement documents include:

http://developer.apple.com/library/mac/samplecode/ScreenSnapshot/Introduction/Intro.html#//apple_ref/doc/uid/DTS40011158

OpenGLScreenSnapshot

Last Revision:	Version 1.1, 2008-08-14 Code refactoring. (Full Revision History)
Build Requirements:	Xcode 3.0
Runtime Requirements:	Mac OS X 10.5

OpenGLScreenSnapshot is a Mac OS X application which demonstrates how to use OpenGL to grab a "snapshot" of the screen and save it to a image file on disk. This sample uses the OpenGL glReadPixels function to get the pixel data for the screen. This technique is actually very simple to use, and is sufficient for grabbing a single or a very few frames.