Gnome::Gtk3::Bin

A container with just one child

Description

The Gnome::Gtk3::Bin widget is a container with just one child. It is not very useful itself, but it is useful for deriving subclasses, since it provides common code needed for handling a single child widget.

Synopsis

Declaration

unit class Gnome::Gtk3::Bin;
also is Gnome::Gtk3::Container;

Uml Diagram

Example

An example using a Gnome::Gtk3::Button which is a direct descendant of Gnome::Gtk3::Bin. Here it is shown that a button is also a kind of a container which in principle can hold anything but by default it holds a label. The widget’s name is by default set to its class name. So, a Button has ‘GtkButton’ and a Label has ‘GtkLabel’.

my Gnome::Gtk3::Button $button .= new(:label('xyz'));
my Gnome::Gtk3::Widget $w .= new(:widget($button.get-child));
say $w.get-name; # 'GtkLabel'

Methods

new

:native-object

Create a Grid object using a native object from elsewhere. See also Gnome::N::TopLevelClassSupport.

multi method new ( N-GObject :$native-object! )

:build-id

Create a Grid object using a native object returned from a builder. See also Gnome::GObject::Object.

multi method new ( Str :$build-id! )

get_child

Gets the child of the Gnome::Gtk3::Bin, or Any if the bin contains no child widget. The returned widget does not have a reference added, so you do not need to unref it.

Returns: The child of the Gnome::Gtk3::Bin;

method get-child ( --> N-GObject )