Moves child to a new index in the list of overlay children.
The list contains overlays in the order that these were
added to overlay by default. See also #GtkOverlay:index.
A widget’s index in the overlay children list determines which order
the children are drawn if they overlap. The first child is drawn at
the bottom. It also affects the default focus chain order.
Moves child to a new index in the list of overlay children. The list contains overlays in the order that these were added to overlay by default. See also #GtkOverlay:index.
A widget’s index in the overlay children list determines which order the children are drawn if they overlap. The first child is drawn at the bottom. It also affects the default focus chain order.