Well, is there?
Nope, but you can fake it by hiding the mouse and making a separate, visible cursor that slowly follows the mouse coordinates.
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Some variations to your question (and .cap-files):
http://www.scirra.com/phpBB3/viewtopic.php?f=3&t=4728&st=0&sk=t&sd=a#p37807
http://www.scirra.com/phpBB3/viewtopic.php?f=3&t=4728&st=0&sk=t&sd=a&start=10#p37893