QGIS is highly configurable through the Settings menu. Choose between Panels, Toolbars, Project properties, Options and Customization.
In the Panels‣ menu you can switch on and off QGIS widgets. The Toolbars‣ menu provides the possibility to switch on and off icon groups in the QGIS toolbar (see figure_panels_toolbars).
Figure Panels and Toolbars:
Activating the QGIS Overview
In QGIS you can use an overview panel that provides a full extent view of layers added to it. It can be selected under the menu View ‣ Panels. Within the view is a rectangle showing the current map extent. This allows you to quickly determine which area of the map you are currently viewing. Note that labels are not rendered to the map overview even if the layers in the map overview have been set up for labeling. If you click and drag the red rectangle in the overview that shows your current extent, the main map view will update accordingly.
Figure Network Tab:
Define the Directory and a Size for the cache.
Excluding some URLs can be added to the text box below the proxy-settings (see Figure_Network_Tab).
If you need more detailed information about the different proxy-settings, please refer to the manual of the underlying QT-library-documentation at http://doc.trolltech.com/4.5/qnetworkproxy.html#ProxyType-enum.
Using proxies can sometimes be tricky. It is useful to ‘trial and error’ the above proxy types and check if they succeed in your case.
You can modify the options according to your needs. Some of the changes may require a restart of QGIS before they will be effective.
The customization tool lets you (de)activate almost every element in the QGIS user interface. This can get very useful if you have a lot of plug-ins installed that you never use and that are filling your screen.
Figure Customization 1:
QGIS Customization is divided into five groups. In Menus you can hide entries in the Menu bar. In Panel you find the panel windows. Panel windows are applications that can be started and used as a floating, top-level window or embedded to the QGIS main window as a docked widget (see also Panels and Toolbars). In the Status Bar features like the coordinate information can be deactivated. In Toolbars you can (de)activate the toolbar icons of QGIS and in Widgets you can (de)activate dialogs as well as their buttons.
With Switch to catching widgets in main application you can click on elements in QGIS you want to be hidden and find the corresponding entry in Customization (see figure_customization). You can also save your various different setups for different use cases as well. Before your changes are applied, you need to restart QGIS.