Custom cursor API is a great solution for creating sets of custom cursors. Each set is a concrete class that you can set. In addition, you can implement custom events such as: mouse down, mouse up and custom busy cursor.

CursorManager class is useful for replacing the cursor with a custom cursor or for creating a busy cursor, but what do you do when you want to create a set of custom cursors? You may also be interested in building few sets of custom cursors to be used in different part of the application and keep track of them in one centralized location.
For example you want to create couple of sets of cursors. One of them will be a custom image, the cursor will change on mouse down and mouse up events and the cursor will have a custom busy image. That set will be used in one component and another set will be used in a different component.

Custom cursor API is based on creating custom sets of cursors for usage in an application. You create a concrete class and set all the images, swf or sprite objects you want to assign to that set and the cursor will change according to how you set it in the concrete class.

All source code contained in this API has been published under the MIT licence and is protected as stated therein.

To see an example and download source code:
http://elromdesign.com/blog/Flex/API/Cursor/

To view the ASDOC of the API:
http://elromdesign.com/blog/Flex/API/asdoc/