I'm building a GUI with GTK-3 in Python using Glade. There is also a ListStore with its columns defined in the Glade file. Now I want to fill the ListStore with numeric values (there are int & ...

I am trying to capture the Enter key when it is pressed in a GtkEntry. Most of the resources I have found suggest connecting to the activate signal, but the documentation for GtkEntry states (empha...

How can I set the font name and size for a text_view? Or do I have to set the font information at the buffer or at the window? Do I have to create some sort of style-sheet? #include <gtk/gtk.h&...

We are trialing Gtk3/Vala/Genie for the development of application user interfaces using Gnome-Builder/Meson/Glade/Flatpak. While there are many examples of Gtk.HeaderBar.pack_start( ... ) and Gtk....

I want my GTK application to have a status icon in the system tray, I have got this working quite nicely using a StatusIcon, however this has been deprecated: gtk_status_icon_new has been deprecat...

Goal: Compile and run flutter examples emulating Linux Desktop on CentOS 7 docker container (Note: Can't use snapd - not supported within Docker) Installed manually Managed to get everything else c...

I'm using g++ GTK3 VSCode How do I get the following to work: Intellisense / code completion for gtk Buiding inside VSCode Debugging with VSCode Problem: VSCode does not find includes - es...

I would like to replace deprecated functions gdk_threads_enter()/leave() in my application that uses threads. The application as it is now, works perfect (although i am not sure if this is the righ...

I am looking for a possibility to add autocompletion for gtk3 libs to vim. I have already tried vim-jedi as it seems the state of the art autocompletion mechanism for vim and python (also recommend...

Running into this issue when working with Hugo and the AWS CLI on Ubuntu 18.04. ERROR: ld.so: object 'libgtk3-nocsd.so.0' from LD_PRELOAD cannot be preloaded (failed to map segment from shared ob...

I have a project using GTK+ 3 only for certain tasks, for example to provide file open dialog with gtk_file_chooser_dialog_new. I have to set parent to NULL as I have no "main" GTK window. However ...

I'm working on learning the CSS styling part of GTK3, and I have noticed that the reference GTK documention talks about the CSS nodes that get created, but not what properties are valid for the com...

Good morning, I'm trying to add a Gtk.Entry to a Gtk.MessageDialog. With the following code it seems that I added the Gtk.Entry but it's not visible on the dialog window (Python3/Gtk3): #!/usr/bi...

I am displaying a UI in a rust based application using gtk3. I am parsing the arguments in the main method for a --config argument in order to find a custom configuration file. The gtk::Application...

I have a GTK3 GUI called by a simple Python 3 code. Icon is located in the /usr/share/icons/hicolor/scalable/actions/ directory. My current theme color is dark and icons look white. When I switch t...

I have looked all over the place and can't seem to find the CSS ID's for Evolution.. I want to be able to customize the colors in Evolution. I have found some CSS tags that were changing sizes bu...

I'm trying to redesign some Gtk3 widgets in my application (like scrollbars or paned) but was unable to set borders and other properties for paned specifically. I then found some CSS data in /usr/...

I'm trying to add to the "recently used" files list from Python 3 on Ubuntu. I am able to successfully read the recently used file list like this: from gi.repository import Gtk recent_mgr = Gtk.R...

How can I debug (and reach some breakpoint) with gdb my buggy program (using GTK3) showing: (monimelt:161): Gtk-WARNING **: Invalid text buffer iterator: either the iterator is uninitialized, or t...

Unfortunately, I am using Windows (Windows7 x64). With MinGW compiler in Code::Blocks and GTK+3.6.4. I compiled manually all the schemas from glib. When I use File Chooser dialogue / colorpicker...

I am now learning to use GTK+3.0 with C in Linux. After reading some tutorials and sample code, I have some questions regarding how to initialize an application. Here are two versions of code I h...

I am creating a UI application with gtk-rs. In that application, I have to spawn a thread to continuously communicate with another process. Sometimes, I have to update the UI based on what happens ...

I have a font file /path/to/app/fonts/custom-font.ttf and I want to use it. How do you import a custom TTF for use in a GTK+3.0 app? from gi.repository import Gtk, Pango # ... lbl = Gtk.Label() ...

Background: I want to write a CAD application. I want to implement all rendering with Vulkan. And I want to use GTK+. I don't want a (visible) different window for the rendered image of the object...

I am working on a SDK which uses gtk3 for windowing and event handling. I am trying to find the system UIScale using the gtk3 APIs. The scale can be greater than 1.0 on HiDPI screens. I was hoping ...