That's not what I asked. Maybe such a thing exists in other software (Logic? Ableton?), but not in Cubase.
There is! "There's also a Swing slider where you can specify how much of a swing feel (as a percentage) to apply to the quantise pattern. For example, say you have a straight-16th performance (much as in the example figures) and you want to inject a swing feel: set Grid to 1/16, Type to Straight, and add as much swing as you can handle."
http://www.soundonsound.com/sos/aug06/articles/cubasetech_0806.htm