Document Revision History

This table describes the changes to Cocoa Drawing Guide.

Date	Notes
2012-09-19	Added information on supporting offscreen drawing for high resolution displays.
	Added Drawing Offscreen Images Using a Block-Based Drawing Method to Support High Resolution Displays.
	Updated Guidelines for Using Images.
2012-07-23	Updated links to guidelines on high resolution.
2011-01-18	Corrected reference to application icon image name constant.
2009-10-19	Corrected typos.
2009-01-06	Updated the guidelines associated with resolution independent drawing.
2008-10-15	Updated advice for creating an NSImage from a CGImageRef. Updated the discussion of screen coordinates.
2007-10-31	Updated the content for OS X v10.5.
	Added information about `NSGradient` and rounded rectangle support.
	Updated the information about flipped coordinate systems.
	Fixed bugs in several code examples.
	Added guidance about which imaging technologies work best for different types of operations.
	Added the mathematical equations corresponding to the available compositing operations.
2006-10-03	Fixed several code examples and added information about how to add a ColorSync profile to a bitmap.
2006-06-28	Changed matrix values to match the values in NSAffineTransformStruct. Fixed example for casting a CGRect to an NSRect.
2006-04-04	Moved animation object details to "Animation Programming Guide."
2006-03-08	New document that describes how to draw content from a Cocoa application.
	This document replaces information about Cocoa drawing that was previously published in Basic Drawing, Drawing and Images, The Drawing Environment, and OpenGL.