Den 2022-05-26 kl. 14:07, skrev JLM via gtkmm-list:
Thanks for looking at this. I guess from what you say, you do not see
the problem. I understand, as I think it would become pretty obvious to
anyone for example running GIMP. So even if this isn't a problem
specific to my program, it may at least be a problem specific to my
environment.
But I do see the problem that you described. With event compression
turned off, the last motion event is kept hidden somewhere in GTK until
a key or a mouse button is clicked. I made the changes in gdkevents.c in
order to find out if the missing motion event is held in GTK itself or
in one of its dependencies.
I have written a bug report on GTK+ for now
https://gitlab.gnome.org/GNOME/gtk/-/issues/4946
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