Hello John, the missing bit is calling DISPATCH-REPAINT or FINISH-OUTPUT after drawing. We are preparing for a separate repaint thread so some things has changed. One of things that have changed are more robust updaint output records, so you may replace your code that "cleans" after the last drawing with using UPDATING-OUTPUT that will update the record itself. I'm attaching a file with an example. Best regards, Daniel p.s. Merry Christmas everyone :) -- Daniel Kochmański ;; aka jackdaniel | Przemyśl, Poland TurtleWare - Daniel Kochmański | www.turtleware.eu "Be the change that you wish to see in the world." - Mahatma Gandhi On Thursday, December 25th, 2025 at 4:56 PM, John Morrison <jm@symbolic-simulation.com> wrote:
forgot to specify the McCLIM is loaded from quicklisp, vintage:
mcclim-20250622-git/
sorry
On Thu, Dec 25, 2025 at 10:31 AM John Morrison <jm@symbolic-simulation.com> wrote:
Hi;
Seasons Greetings!
In my CLIM app, the tracking-pointer-drawn box in my "rubber band zoom" has ceased to appear (mind you, I did break lots of things during a refactor). I am unsure exactly when (with respect to McCLIM or OS updates) when it stopped working. n my attempt to resurrect it, I tried the example from [here](https://www.lispworks.com/documentation/lw81/clim/clim-ch15-5.htm). I couldn't get it to work either. Please find attached a hopefully self-contained update of that example which demonstrates the failure mode under:
- Linux Fedora Core 42 - kwayland-6.5.4-1.fc42.x86_64 - xorg-x11-server-Xwayland-24.1.9-1.fc42.x86_64
Sorry in advance if this turns out to be Pilot Error. If so, I will take my well-deserved lumps in public.
-jm
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