[R] tcltk: repeat event while button is down?

[Peter Dalgaard]

Duncan Murdoch <murdoch at stats.uwo.ca> writes:

> On 05 Aug 2004 22:55:10 +0200, Peter Dalgaard
> <p.dalgaard at biostat.ku.dk> wrote :
> 
> >Duncan Murdoch <murdoch at stats.uwo.ca> writes:
> >
> >> Is there a way in TCL/TK to trigger an event multiple times while a
> >> button is held down?  I'd like to have an rgl scene continuously
> >> rotate until the button is released.
> >
> >Something involving "after", I'd say. Set up the rotate action to
> >reschedule itself after N milliseconds, and the button release event
> >to "after cancel". 
> 
> Thanks.  Just one more detail:  the docs I have must be old, they
> don't talk about separate button press and button release events.  How
> do I attach separate event handlers to those?

<ButtonPress-1> (or just <1>), <ButtonRelease-1>, I believe. It's used
in the tkcanvas demo.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
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