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From the GTK+ website:
- GTK+, or the GIMP Toolkit, is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off tools to complete application suites.
Old GTK+ 1 apps (like xmms) often don't look very nice at first. This is because they use ugly themes by default. To change this, you need to:
- download and install some nice themes
- change the theme
To change the theme you can use gtk-theme-switch:
# pacman -S gtk-theme-switch2
Run it with the 'switch' command.
Major Desktop Environments provide tools to configure the GTK+ theme, icons, font and font size. Alternatively, tools such as Template:Package Official, Template:Package Official, Template:Package Official and Template:Package Official may be used. Template:Package Official is a DE independent configuration tool from the LXDE project, which does not require any other parts of LXDE. Install one of these packages, as below:
# pacman -S lxappearance # pacman -S gtk-chtheme # pacman -S gtk-theme-switch2 # pacman -S gtk2_prefs
It is recommended to install some GTK+ 2 themes as well. The popular Clearlooks theme is included within the Template:Package Official package:
# pacman -S gtk-engines
Further themes can be found in AUR:
Alternatively, GTK+ settings can be configured manually by editing Template:Filename. A list of GTK+ settings can be found in the gnome library. To manually change the GTK+ theme, icons, font and font size, add the following to Template:Filename:
For example: Template:File
GTK+ and QT
If you have GTK+ and QT (KDE) applications on your desktop then you know that their looks don't blend well. If you wish to make your GTK+ styles match your QT styles please read Uniform Look for QT and GTK Applications.
The purpose of this section is to collect GTK configuration settings which can e.g. be used within Template:Codeline.
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
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 don't 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\ :gtk-small-toolbar=16,16:gtk-button=16,16"
Or to remove icons from buttons completely:
gtk-button-images = 0
You can also remove icons from menus:
gtk-menu-images = 0
Compiling GTK+ programs
When writing a start-from-scratch GTK+ program with C, it's necessary to add CFLAGS for gcc (the code was adopted from ubuntu forum):
gcc -g -Wall `pkg-config --cflags --libs gtk+-2.0` -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 provided by the gtk.org.