queue_allocate

Flags the widget for a rerun of the [vfunc@Gtk.

Widget.size_allocate] function.

Use this function instead of [method@Gtk.Widget.queue_resize] when the this's size request didn't change but it wants to reposition its contents.

An example user of this function is [method@Gtk.Widget.set_halign].

This function is only for use in widget implementations.

Parameters:

this	a `GtkWidget`