setHadjustment
Hooks up an adjustment to focus handling in @box.
The adjustment is also used for autoscrolling during rubberband selection. See method@Gtk.ScrolledWindow.get_hadjustment for a typical way of obtaining the adjustment, and method@Gtk.FlowBox.set_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 box.
Parameters
adjustment
an adjustment which should be adjusted when the focus is moved among the descendents of @container