# Gtk ComBox problem

**URL:** <https://discourse.julialang.org/t/gtk-combox-problem/27365>\
**Category:** General Usage\
**Tags:** question\
**Created:** [August 9, 2019, 10:18pm UTC](https://discourse.julialang.org/t/gtk-combox-problem/27365 "2019-08-09T22:18:53Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Kelvyn88](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kelvyn88/32/8493_2.png) [@Kelvyn88](https://discourse.julialang.org/u/Kelvyn88)\
**Post date:** [August 9, 2019, 10:18pm UTC](https://discourse.julialang.org/t/gtk-combox-problem/27365/1 "2019-08-09T22:18:53Z")

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Hi everybody.

I´m working with Gtk. I want to push! a GtkComboBox with a signal\_connect function (:changed). The problem is that, when I use “set\_gtk\_property(cb, :active, 0)” as a example, the Julia session closes. If I erase the signal\_connect function, the code runs without problem. I need the signal connect.

Help please.

Kelvyn B.

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**Author:** ![tobias.knopp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tobias.knopp/32/7551_2.png) [@tobias.knopp](https://discourse.julialang.org/u/tobias.knopp)\
**Post date:** [August 10, 2019, 8:08am UTC](https://discourse.julialang.org/t/gtk-combox-problem/27365/2 "2019-08-10T08:08:08Z")

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What Julia version?

With \< v1.1 it was not allowed to change the UI in callbacks. One had to wrap that in `Gtk.@sigatom`, i.e.

```julia
Gtk.@sigatom set_gtk_property(cb, :active, 0)

```

With Julia v1.1 this should not happen anymore.

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<div class="post-metadata">

**Author:** ![Kelvyn88](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kelvyn88/32/8493_2.png) [@Kelvyn88](https://discourse.julialang.org/u/Kelvyn88)\
**Post date:** [August 10, 2019, 8:57pm UTC](https://discourse.julialang.org/t/gtk-combox-problem/27365/3 "2019-08-10T20:57:37Z")

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I´m with julia 1.1.

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**Author:** ![Kelvyn88](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kelvyn88/32/8493_2.png) [@Kelvyn88](https://discourse.julialang.org/u/Kelvyn88)\
**Post date:** [August 11, 2019, 12:23am UTC](https://discourse.julialang.org/t/gtk-combox-problem/27365/4 "2019-08-11T00:23:36Z")

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It works! Thanks.