Good afternoon Clinton and Steve,
Just a note about the program on my machine. There seemed to be problems
experienced with how fast I changed the size of the window. It kept up
well and only did the final forced resize when I let the mouse button go.
Additional testing completed. It does not matter how fast you move the
resize around the screen as long as you release the mouse button after
you have stopped moving with a .25 sec or more delay.
What I did notice is that the effect that Clinton has described occurs
if you rapidly move and release the mouse button almost simultaneously.
That from time of first start of move, shift across screen to release of
mouse button is a very small fraction of a sec.
If the above makes sense.
Additional testing has also shown that forcing the window to full screen
and then back again and resizing stops this problem. Grabbing the title
bar and shifting the window position on screen also rectifies the problem.
Hope this helps.
regards
Bruce Rennie
On 11/11/16 14:42, Jeffery, Clint (jeffe...@uidaho.edu) wrote:
>
>
> Steve,
>
>
> Your program issuing a resize request for every resize event seems to
> be tickling a pathology of some sort. If you start dragging real slow,
> it seems to work (at least on my machine) but then goes bonkers. Its
> an infinite loop, since Pending() never fails. But my sense is that
> after it falls behind a certain amount, resize events and resize
> requests form their own feedback loop. It is either that or some kind
> of competition between the window system and the application, as to
> who is processing input events, and which window retains the focus. It
> is like: we are having to repaint the window so many times, the window
> system isn't able to continue the drag/resize operation at speed any more.
>
>
> Feel free to contribute improvements to the C code for handling window
> resizes. It tries pretty hard to do things like suppress adjacent
> resizes to avoid falling behind, but maybe your explicitly resizing in
> the middle of that defeats the code that is there.
>
>
> Cheers,
>
> Clint
>
>
> ------------------------------------------------------------------------
> *From:* Steve Wampler <swamp...@noao.edu>
> *Sent:* Thursday, November 10, 2016 6:25:02 PM
> *Subject:* Re: [Unicon-group] Resize Graphics window programatically?
> On 11/10/2016 03:36 PM, Jafar Al-Gharaibeh wrote:
> > Steve,
> >
> > I tried the on my Ubuntu machine:
> > procedure main()
> > w := open("resize", "g", "size=400,400")
> > Event(w)
> > WAttrib(w, "size=800,400")
> > Event(w)
> > close(w)
> > end
> >
> > It works as advertised. Want to test it at your end?
>
> That works, but the following version doesn't (where the user can
> drag out a new window size):
>
> procedure main()
> w := open("resize", "g", "size=400,400", "resize=on")
> repeat {
> while Pending(w) do {
> Event(w)
> x := WAttrib(w, "width");
> WAttrib(w, "size="||x||","||x)
> }
> }
> close(w)
> end
>
> --
> Steve Wampler -- swamp...@noao.edu
> The gods that smiled on your birth are now laughing out loud.
>
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