Sets keyboard focus to @surface.
In most cases, [method@Gtk.Window.present_with_time] should be used on a [class@Gtk.Window], rather than calling this function.
timestamp of the event triggering the surface focus
See Implementation
Sets keyboard focus to @surface.
In most cases, [method@Gtk.Window.present_with_time] should be used on a [class@Gtk.Window], rather than calling this function.