Description

Gnome::Gtk4::R-Root is the interface implemented by all widgets that can act as a toplevel widget.

The root widget takes care of providing the connection to the windowing system and manages layout, drawing and event delivery for its widget hierarchy.

The obvious example of a Gnome::Gtk4::R-Root is Gnome::Gtk4::Window.

To get the display to which a Gnome::Gtk4::R-Root belongs, use .get-display().

Gnome::Gtk4::R-Root also maintains the location of keyboard focus inside its widget hierarchy, with .set-focus() and .get-focus().

Methods

get-display

Returns the display that this Gnome::Gtk4::R-Root is on.

method get-display (--> N-Object )

Return value; the display of $root.

get-focus

Retrieves the current focused widget within the root.

Note that this is the widget that would have the focus if the root is active; if the root is not focused then gtk_widget_has_focus (widget)` will be False for the widget.

method get-focus (--> N-Object )

Return value; the currently focused widget.

set-focus

If $focus is not the current focus widget, and is focusable, sets it as the focus widget for the root.

If $focus is undefined, unsets the focus widget for the root.

To set the focus to a particular widget in the root, it is usually more convenient to use .grab-focus() in class Gnome::Gtk4::Widget instead of this function.

method set-focus ( N-Object() $focus )

• $focus; widget to be the new focus widget, or undefined to unset the focus widget.