Description GdkScreen objects are the GDK representation of a physical screen. It is used throughout GDK and GTK+ to specify which screen the top level windows are to be displayed on. It is also used to query the screen specification and default settings such as the default colormap (gdk_screen_get_default_colormap()), the screen width (gdk_screen_get_width()), etc. Note that a screen may consist of multiple monitors which are merged to form a large screen area.