# Bug in Gtk::EntryCompletion match-selected signal? **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [August 22, 2007, 4:38pm UTC](https://www.ruby-forum.com/t/bug-in-gtk-entrycompletion-match-selected-signal/112724 "2007-08-22T16:38:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [August 22, 2007, 4:38pm UTC](https://www.ruby-forum.com/t/bug-in-gtk-entrycompletion-match-selected-signal/112724/1 "2007-08-22T16:38:33Z")
The attached script bombs when an entry is selected from the list of completions (try entering a “T”). It seems that the iterator passed to the signal handler isn’t attached to the model properly. I have been unable to figure out why. nikolai ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [August 22, 2007, 4:54pm UTC](https://www.ruby-forum.com/t/bug-in-gtk-entrycompletion-match-selected-signal/112724/2 "2007-08-22T16:54:35Z")
I had a similar problem a while ago (running against 0.16). IIRC, the error message said something about a GClosure object having been deleted due to reference counting. If you’re getting a similar message, this might be the problem. I tried to fix the problem, but simply ran out of time. Fortunately, I was able to workaround the problem by keeping extending Gtk::Completion instance lifetime by assigning it to a member variable. In “setup\_completion”, try making “completion” a member (@completion) and see if the problem persists. Hope this helps. Don Kelly/ On 8/22/07, Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > The attached script bombs when an entry is selected from the list of > completions (try entering a “T”). It seems that the iterator passed > to the signal handler isn’t attached to the model properly. I have > been unable to figure out why. > > nikolai – karfai [AT] [gmail.com](http://gmail.com) [http://www.strangeware.ca](http://www.strangeware.ca) [http://beyondtheedge.blogspot.com](http://beyondtheedge.blogspot.com) * * * This [SF.net](http://SF.net) email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now \>\> [http://get.splunk.com/](http://get.splunk.com/) ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [August 24, 2007, 10:07am UTC](https://www.ruby-forum.com/t/bug-in-gtk-entrycompletion-match-selected-signal/112724/3 "2007-08-24T10:07:08Z")
On 8/22/07, Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > The attached script bombs when an entry is selected from the list of > completions (try entering a “T”). It seems that the iterator passed > to the signal handler isn’t attached to the model properly. I have > been unable to figure out why. Apparently, rg2 code relies on the fact that iter-\>user\_data3 is a pointer to the model. I don’t know how this should be working globally in this case of an iter generated from a signal, there is probably the needs to intercept the data of the emitted signal to properly set user\_data3, because that’s what seems to trigger your problem (gtk\_tree\_model\_get\_values fired without a proper GtkTreeModel\* parameter); but I’ll let that to the people who designed the iter/user\_data3 thing. Gtk-CRITICAL \*\*:gtk\_tree\_model\_get\_value: assertion `GTK\_IS\_TREE\_MODEL (tree\_model)’ failed In the meantime, replacing iter[0] by model.get\_value(iter, 0) workarounds the bug. – Guillaume C. - [Guillaume Cottenceau](http://zarb.org/~gc/) * * * This [SF.net](http://SF.net) email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now \>\> [http://get.splunk.com/](http://get.splunk.com/)