Widget.queueAllocate

Flags the widget for a rerun of the vfuncGtk.Widget.size_allocate function.

Use this function instead of [gtk.widget.Widget.queueResize] when the widget's size request didn't change but it wants to reposition its contents.

An example user of this function is [gtk.widget.Widget.setHalign].

This function is only for use in widget implementations.