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Questions tagged [gtk4]

194 questions
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Making a clickable box in GTK4

How can I make a gtk4::Box clickable in gtk_rs? In GTK3 it seems that using an EventBox was the way to achieve this, however in GTK4: Stop using GtkEventBox GtkEventBox is no longer needed and has been removed. All widgets receive all…
JShorthouse
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Using GEGL with GTK 4 for a simple image viewer with pan/zoom support

I need a simple image widget with a support of panning/zooming but unfortunately it appears GTK still does not offer one. I have managed to achieve something similar by using a ScrolledWindow and a Picture backed by a PixBuf (via scaling the PixBuf…
zareami10
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What is the GTK4 equivalent of gtk_style_context_get_property?

It appears that in gtk4, the gtk_style_context_get_property() function is gone: https://developer.gnome.org/gtk4/stable/GtkStyleContext.html . I can't seem to find any functions in gtk4 that do what it did. Basically I want to get the border color…
Enter Display Name Here
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Why does GTK 4 report "assertion 'GTK_IS_WIDGET (widget)' failed"?

I have created what I would consider the simplest GTK 4 application to create a window with a menubar that activates a GAction when the menu item is clicked. #include #include #include static…
Fojupin
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Button.set_hexpand(false) doesn't stop button from expanding

I am building a GUI Application using GTK4.8.3. I want two ScrolledWindows where one (containing a ListBox) can expand horizontally and the other (containing a Button) cannot. More precisely, I want to restrict the button's ability to hexpand. From…
Samuel Jenks
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How to use eventcontroller in gtk4

I would like to add onclick event handling to a GtkBox widget. I see that only GtkButton has clicked signal, so I feel like the only option is to attach a GtkEventController to my widget. As per the doc, gtk_get_current_event(GtkEventController…
Abraham Zsombor Nagy
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On wayland, why is my default Gtk display an X11Display?

I'm learning GTK4 and working with wayland (hyprland) on linux. When I try to retrieve the default display, my python code returns an X11Display. I figured out that the GDK_BACKEND environment variable was not set to wayland. However, my question…
David
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How do I use Common Lisp CFFI to close all windows of an Gtk4 app?

It appears that the way to close a Gtk4 library is by closing all the windows. The gir based bindings only allow the closing of a single window. https://docs.gtk.org/glib/type_func.List.foreach.html seems to be the way to go. I want to pass to it…
ruby_object
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How do I use SBCL sb-alien to create a Gtk4 window open it and have a simple callback that works?

The documentation is difficult to understand. http://www.sbcl.org/manual/index.html#Foreign-Function-Interface Part of the problem is not understanding how to implement this type https://docs.gtk.org/gobject/callback.Callback.html in my code. I need…
ruby_object
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How to get clipboard content with Python3 & GDK 4?

GTK4 doens't manage the Clipboard anymore, now it's done from GDK4. I was not lucky migrating this code from GTK3 to GDK4? from gi.repository import Gtk, Gdk cb = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD) content = cb.wait_for_text() Any idea…
Costales
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libEGL warning: DRI2: failed to authenticate

I am trying to get the example from the docs working but I keep on getting this error libEGL warning: DRI2: failed to authenticate I installed the packages sudo apt install libpango1.0-dev sudo apt-get install libgtk-4-dev sudo apt-get install…
katysha
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How to programmatically add a check mark to a GMenuItem (gtk4 using c)

Only GMenu, GMenuItem, GMenuModel, and GSimpleAction can be used to create menus in GTK4. Is it possible to put a check mark next to a known GMenuItem? I've menaged to enable/disable menu item by manipulating GSimpleAction. However, there is no…
kkemic
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How can I get user input from an entry? GTK 4 C

I'm trying to get what it's been typed in an entry and store it to afterwards use it elsewhere in my app, but I'm having a hard time trying to figure it out because functions like gtk_entry_get_text() aren't in gtk4 so I'm using an entry buffer to…
prxvvy
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Gtk4 GestureClick no released signal emitted

When I assign a Gtk.GestureClick to a Gtk.Scale there's no released signal emitted. See code for example. import gi gi.require_version('Gtk', '4.0') from gi.repository import Gtk class Main(): def on_activate(self, app): win =…
swanux
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Global Locale Warning using C++ and gtkmm

I'm working on a gui using gtkmm and everything is working, but I get a warning that I can't figure out: ** (process:28120): WARNING **: 13:08:38.752: Can't set the global locale to the user's preferred locale. locale::facet::_S_create_c_locale…
Zico
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