"Sticky button" configuration under X11/Ubuntu?

Posted by John Whitley on Super User See other posts from Super User or by John Whitley
Published on 2009-12-16T21:19:35Z Indexed on 2010/03/08 6:51 UTC
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linux

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x11

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ubuntu

Is there a configuration or app that will enable Sticky-keys like functionality for a pointer button under X11? (On Ubuntu 9.10, FWIW.) To be clear, I'd like a single tap (down/up events) to be treated as a down event, and a following tap to be treated as an up event.

Context: I have a trackball with a fourth button that I've mapped to act as horizontal/vertical scroll. This works great. It'd be even better if I didn't have to hold the button down when scrolling.

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