Gtk.Container.prototype.set_focus_hadjustment

function set_focus_hadjustment(adjustment:Gtk.Adjustment):void {
    // Gjs wrapper for gtk_container_set_focus_hadjustment()
}

Hooks up an adjustment to focus handling in a container, so when a child of the container is focused, the adjustment is scrolled to show that widget. This function sets the horizontal alignment. See Gtk.get_hadjustment for a typical way of obtaining the adjustment and Gtk.set_focus_vadjustment for setting the vertical adjustment.

The adjustments have to be in pixel units and in the same coordinate system as the allocation for immediate children of the container.