Using the current bionic-updates version the warning is displayed, after upgrading to 3.22.30-1ubuntu3 clicking the button works without any warning display, the fix is verified
** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-done verification-done-bionic -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1816032 Title: gtk_widget_destroy reports error Status in gtk+3.0 package in Ubuntu: Fix Released Status in gtk+3.0 source package in Bionic: Fix Committed Bug description: * Impact Buggy warnings are displayed in some cases, which can confuses users/coders * Test case Build and use the small program attached in the comments, it should display no warning * Regression potential The change is a simple null check in the combo widget code, the regression potential is low but make sure combos work in a few softwares just in case ------------------------------ 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1816032/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
