Help. Tracking ButtonRelease events

Philip Derbeko sphilip at t2.technion.ac.il
Sat Aug 7 21:38:35 CEST 1999


Hello.

Thanks for your help.

Actually I wanted to reduce the complexity of this to O(1) , since search is
O(log N).
Well I've found another way of doing it , in the cost of changing a GUI a bit
:
now if you want to draw an edge you click on the source vertex ( regular click
with release)
move pointer to the destination , pointer followed by the edge , and click on
it.
This is the same model as in XFig for example.
I've done it by tracking enter and leave events for each vertex , this way i
know when and which vertex entered
and if button was clicked in it.
I'm sorry i can't post the code , its in very early development stage ,
if you want it anyway email me.

Regards
Philip

Hever Zsolt wrote:

> This is not  a direct answer, but hopefully it is a help.
> I am working on a bit similar program and I have put out some code.
> http://www.nexus.hu/hever/prog/vu/visualut.py <=main program
> http://www.nexus.hu/hever/prog/vu/frameobj.py <= module
> http://www.nexus.hu/hever/prog/vu/vu.gif    <= help, a picture of the
> program
> It grew out from the same script(s) you mentioned, there are same problems
> you have now that I had to solve somehow.
> In the frameobj.py module there is a "class Connecting_Objects:" which does
> that. I maintain an ordered taglist for additional information.
>
> Zsolt
>
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