This takes care of details such as updating the state and style
of the child to reflect its new location and resizing the parent.
The opposite function is [method@Gtk.Widget.unparent].
This function is useful only when implementing subclasses of
GtkWidget.
Sets @parent as the parent widget of @widget.
This takes care of details such as updating the state and style of the child to reflect its new location and resizing the parent. The opposite function is [method@Gtk.Widget.unparent].
This function is useful only when implementing subclasses of GtkWidget.