Looking upstream it seems similar to
https://gitlab.gnome.org/GNOME/gtk/issues/125 , the warning is indeed
fixed in the current Ubuntu serie, could be a candidate to include if we
do a SRU update for gtk but doesn't seem an high importance one/probably
not worth an update by itself
** Package changed: libcanberra (Ubuntu) => gtk+3.0 (Ubuntu)
** Changed in: gtk+3.0 (Ubuntu)
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1816032
Title:
gtk_widget_destroy reports error
Status in gtk+3.0 package in Ubuntu:
Fix Released
Bug description:
I have recently installed Ubuntu 18.04 on a new computer and have a
Gtk+3.0 program that reports an error:-
Gtk-CRITICAL gtk_widget_is_drawable: assertion 'GTK_IS_WIDGET
(widget)' failed
The same program runs without error on another computer with 16.04.
The problem occurs when a ComboBoxText widget in a container (grid) is
destroyed using gtk_widget_destroy.
Other widgets may be affected but the problem does not occur for GtkScale
widgets. The widget does actually get destroyed, but the message is produced in
the process.
I have also found that using gtk_container_remove avoids the error, but the
docs indicate that this is
inefficient and not preferred.
I have attached a test program to reproduce the error. It also
includes a few other things that I tried to see if they made any
difference but to no avail. 'Destroy cbox' is the essential test to
reproduce.
System details:
Description: Ubuntu 18.04.1 LTS
Release: 18.04
libwxgtk3.0-dev:
Installed: (none)
Candidate: 3.0.4+dfsg-3
Version table:
3.0.4+dfsg-3 500
500 http://au.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
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