Difference between revisions of "GTK+ (Italiano)"

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{{Attenzione|Questo articolo è in fase di traduzione. Seguite per ora le istruzioni della versione inglese.}}  
{{Attenzione|Questo articolo è in fase di traduzione. Seguite per ora le istruzioni della versione inglese.}}  

Revision as of 11:12, 13 June 2012

zh-CN:GTK+ Template:Temporary i18n

Attenzione: Questo articolo è in fase di traduzione. Seguite per ora le istruzioni della versione inglese.

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Dal Sito di GTK+:

GTK+, o The GIMP Toolkit, è un toolkit multi-piattaforma per creare interfacce utente (UI) grafiche. In quanto offre un set completo di strumenti, GTK+ è adatto per ogni progetto, da piccoli strumenti unici a interfacce complete di applicazioni.

GTK+, The GIMP Toolkit, fu creato inizialmente dal Progetto GNU per il GIMP, ma ora è un toolkit molto famoso con supporto per molte lingue.

Programmi di configurazione

Questi programmi GUI (Graphic User Interface) permettono la selezione del tema oltre alla personalizzazione del font e del cursore. Generalmente sovrascrivono il file ~/.gtkrc-2.0.

Un comando d'installazione d'esempio:

# pacman -S gtk-theme-switch2

Può essere utile guardare anche Uniformare il look di applicazioni QT e GTK - Come posso configurare lo stile per ogni toolkit


GTK+ 1.x

Le vecchia applicazioni GTK+ 1 (come xmms) quasi sempre non hanno un bel look all'inizio. La causa è data dal fatto che usano di default dei temi poco gradevoli. Per cambiare la sitazione, è necessario:

  1. scaricare ed installare dei bei temi
  2. cambiare il tema di default

Molti temi gradevoli si trovano in AUR. Per installarli, si veda gtk-smooth-engineAUR.

Per cambiare il tema è possibile usare gtk-theme-switch2. Per avviarlo basta usare il comando 'switch'.

GTK+ 2.x

I maggiori ambienti desktop muniscono l'utente di strumenti per configurare il tema GTK+, le icone, il font e la sua dimensione. In alternativa, si possono usare programmi come quelli appena menzionati.

È raccomandato anche installare alcuni temi GTK+ 2. Il famoso tema Clearlooks è incluso al pacchetto gtk-engines.

Altri temi si possono trovare in AUR:

In alternativa, le impostazioni di GTK+ possono essere configurate manualmente modificando ~/.gtkrc-2.0. Una lista di impostazioni GTK+ possono essere trovate in GNOME library. Per cambiare manualmente il tema GTK+, le icone, i font e la loro grandezza, basta aggiungere le righe seguenti a ~/.gtkrc-2.0:

gtk-icon-theme-name = "[nome-del-tema-icone]"
gtk-theme-name = "[nome-del-tema]"
gtk-font-name = "[nome-del-font] [grandezza]"

Ad esempio:

gtk-icon-theme-name = "Tango"
gtk-theme-name = "Murrine-Gray"
gtk-font-name = "DejaVu Sans 8"
Note: L'esempio appena riportato richiede i pacchetti ttf-dejavu, tango-icon-theme, gtk-engine-murrine da repository ufficiali, e murrine-themes-collectionAUR da AUR.

GTK+ 3.x

If you use GNOME 3, the theme can be changed with the gnome-tweak-tool.

If you use a GTK+ 2.x based DE, like Xfce, LXDE, gnome-tweak-tool won't work; see FS#23644. You need to install librsvg, and set your theme manually in {XDG_CONFIG_HOME}/gtk-3.0/settings.ini (this is usually ~/.config/gtk-3.0/settings.ini. An example settings.ini file:

gtk-application-prefer-dark-theme = false
gtk-theme-name = Zukitwo
gtk-fallback-icon-theme = gnome
gtk-icon-theme-name = [icon theme name]
gtk-font-name = [font name] [font size]

If it still does not change, delete old gtk-3.0 folder in {XDG_CONFIG_HOME} and copy gtk-3.0 folder from /path-to-the-theme to {XDG_CONFIG_HOME}. example:

rm -r ~/.config/gtk-3.0/
cp -r /usr/share/themes/Zukitwo/gtk-3.0/ ~/.config/  

After this, you need to set the same theme in your DE's appearance configuration tool. There are only a few themes which provide a uniform look for GTK+ 3.x and GTK+ 2.x apps. A few examples:

  1. Adwaita for GTK+ 3 and Advaicium for GTK+ 2
  2. Newlooks for GKT+ 3 and Clearlooks for GTK+ 2
  3. Zukitwo
  4. Elegant Brit
  5. Atolm
  6. Hope

You could find what themes installed on your system have both an Gtk2 and Gtk3 version by using this command (don't work with names containing spaces) :

find $(find /home/twix/.themes /usr/share/themes/ -wholename "*/gtk-3.0" | sed -e "s/^\(.*\)\/gtk-3.0$/\1/")\
-wholename "*/gtk-2.0" | sed -e "s/.*\/\(.*\)\/gtk-2.0/\1"/

Note: There probably are other themes. Some of these themes are available in the AUR. Also, some of them are not usable as is for displaying a GTK+ 2.x panel (light text over light background), so you need to use the provided panel background.

GTK+ and QT

If you have GTK+ and QT (KDE) applications on your desktop then you know that their looks do not blend well. If you wish to make your GTK+ styles match your QT styles please read Uniform Look for QT and GTK Applications.

Configuration file

Note: See the GtkSettings properties in the GTK+ programming reference manual for the full list of GTK configuration options.

The purpose of this section is to collect GTK configuration settings which can e.g. be used within ~/.gtkrc-2.0.

Enabling Customizable Keyboard Shortcuts

You can customize your GTK applications' keyboard shortcuts (those are called accelerators in GTK terminology) by hovering your mouse over a menu item and pressing your desired key combination. However, this feature is disabled by default. To enable it, set

gtk-can-change-accels = 1

Speed up your GNOME menu

This setting controls the delay between you pointing the mouse at a menu and that menu opening in GNOME. Change this to a setting you prefer. I guess the number is in milliseconds, e.g. 250 being a quarter of a second.

gtk-menu-popup-delay = 0

Reduce widget sizes

If you have a small screen or you just do not like big icons and widgets, you can resize things easily. To have icons without text in toolbars, use

gtk-toolbar-style = GTK_TOOLBAR_ICONS

To use smaller icons, use a line like this:

gtk-icon-sizes = "panel-menu=16,16:panel=16,16:gtk-menu=16,16:gtk-large-toolbar=16,16\

Or to remove icons from buttons completely:

gtk-button-images = 0

You can also remove icons from menus:

gtk-menu-images = 0

There is some more tweaking to do in your themes gtkrc like explained here and there's another theme that does it all.


When writing a start-from-scratch GTK+ 3 program with C, it's necessary to add CFLAGS for gcc:

gcc -g -Wall `pkg-config --cflags --libs gtk+-3.0` -o base base.c

-g and -Wall parameters are not necessary since they are only for verbose debugging outputs. You may try out the official Hello World example.

Write a simple message dialog app

You can write your own GTK+ 3 message dialog easily in many programming languages through GObject-Introspection or bindings, or you can simply use bash.

The following examples display a simple "Hello world" in a message dialog.


zenity --info --title='Hello world!' --text='This is an example dialog.'


  • Dependency: gtk3
  • Build with: gcc -o hello_world `pkg-config --cflags --libs gtk+-3.0` hello_world.c
#include <gtk/gtk.h>
void main (int argc, char *argv[]) {
	gtk_init (&argc, &argv);
        GtkWidget *hello = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL, GTK_MESSAGE_INFO, GTK_BUTTONS_OK, "Hello world!");
	gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (hello), "This is an example dialog.");
        gtk_dialog_run(GTK_DIALOG (hello));


  • Dependency: gtkmm3
  • Build with: g++ -o hello_world `pkg-config --cflags --libs gtkmm-3.0` hello_world.cc
#include <gtkmm.h>
#include <gtkmm/messagedialog.h>
int main(int argc, char *argv[]) {
	Gtk::Main kit(argc, argv);
	Gtk::MessageDialog Hello("Hello world!", false, Gtk::MESSAGE_INFO, Gtk::BUTTONS_OK);
	Hello.set_secondary_text("This is an example dialog.");


  • Dependency: gtk3
  • Makedependency: vala
  • Build with: valac --pkg gtk+-3.0 hello_world.gs
	Gtk.init (ref args)
	var Hello=new MessageDialog (null, Gtk.DialogFlags.MODAL, Gtk.MessageType.INFO, Gtk.ButtonsType.OK, "Hello world!")
	Hello.format_secondary_text ("This is an example dialog.")
	Hello.run ()


Gtk = imports.gi.Gtk
Gtk.init(null, null)
Hello = new Gtk.MessageDialog({type: Gtk.MessageType.INFO,
                               buttons: Gtk.ButtonsType.OK,
                               text: "Hello world!",
                               "secondary-text": "This is an example dialog."})


from gi.repository import Gtk
Hello=Gtk.MessageDialog(None, Gtk.DialogFlags.MODAL, Gtk.MessageType.INFO, Gtk.ButtonsType.CLOSE, "Hello world!")
Hello.format_secondary_text("This is an example dialog.")


  • Dependency: gtk3
  • Makedependency: vala
  • Build with: valac --pkg gtk+-3.0 hello_world.vala
using Gtk;
public class HelloWorld {
	static void main (string[] args) {
		Gtk.init (ref args);
		var Hello=new MessageDialog (null, Gtk.DialogFlags.MODAL, Gtk.MessageType.INFO, Gtk.ButtonsType.OK, "Hello world!");
		Hello.format_secondary_text ("This is an example dialog.");
		Hello.run ();