I am using GTK.3.15. When attempting to open GTK Inspector using the Ctrl+Shift+I or Ctrl+Shift+D, nothing happens. Does not matter what application or widget I am using. Nothing happens

and my understanding is that this option comes standard on GTK 3.15. Does anyone know how

to use this tool in GTK 3.15?

  • Did you tried with my answer? – 0x2b3bfa0 Mar 21 '15 at 18:09
  • The dconf-editor does not have the debug feature that you speak of. I did attempt to update the application but Ubuntu tells me that I have the newest version installed. I do appreciate your help though. It looks like I will have to wait a few weeks for the release of Ubuntu 15.04. – Adam Mar 22 '15 at 13:21
  • Sorry, I didn't put arrows in my answer. I meant org > gtk > Settings > Debug. I think that – 0x2b3bfa0 Mar 22 '15 at 13:24
  • No arrows were needed. I understood exactly what you were telling me. – Adam Mar 22 '15 at 13:27
  • I tried it on my computer and it couldn't find debug entry. However, did it work the 2nd method? – 0x2b3bfa0 Mar 22 '15 at 13:27

I got this from https://wiki.gnome.org/Projects/GTK%2B/Inspector:

GtkInspector is the built-in interactive debugging support in GTK+. It was added in GTK+ 3.14, based on a copy of the well-estabished gtkparasite.

The debugger is disabled by default. To enable it run in a terminal:

gsettings set org.gtk.Settings.Debug enable-inspector-keybinding true

And launch it pressing on the keyboard Control-Shift-I or Control-Shift-D.

If you don't want to use the shortcuts, you can also run it temporarily directly when running your app with:

GTK_DEBUG=interactive your-app

Looking further, I found Bug #1523929 which indicates that users can install libgtk-3-dev which then provides the schema. Note that installing libgtk-3-dev may bring in a lot of dependencies.

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  • 1
    How do I open the inspector in browser that use ctrl+shit+i (or ctrl+shift+d) as shorcuts for other tasks? – euDennis Apr 1 '17 at 21:37
  • 2
    I can't inspect even after installing libgtk-3-dev. Looked in the help menu, no inspector help. Looked in key bindings and no option for opening the inspector. – Costa Nov 18 '18 at 19:54

Method 1:

Enable the shortcut:

  1. Install dconf-editor with sudo apt-get install dconf-editor
  2. Navigate to org > gtk > settings > debug
  3. Set enable-inspector-keybinding to true
  4. Try the shortcut.

Method 2:

Run the program to debug with the GTK_DEBUG variable:

Instead of running the program to debug as usual (myprogram --argument) you only need to run it of this way (GTK_DEBUG=interactive myprogram --argument)

Also you can export that variable with export GTK_DEBUG=interactive and then run the program.

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  • No it's not necessary to reboot or to log out+in after using dconf. If you ever find a case where a dconf change doesn't "take" until you re-login, it's a bug. Report it. – Matthias Urlichs May 8 '18 at 11:31
  • dconf is missing Debug for me. Ubuntu 18.04. – Costa Nov 18 '18 at 19:46
  • 3
    This didn't work for me even after installing libgtk-3-dev. I'm on Ubuntu 18.04 with Gnome 3.28.3 – Costa Nov 18 '18 at 19:55
  • This seems to be the last documentation: wiki.gnome.org/Projects/GTK+/Inspector – 0x2b3bfa0 Nov 19 '18 at 21:03
  • I'm a bit puzzled – 0x2b3bfa0 Nov 19 '18 at 21:03

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