selectionOwnerSet

fnbool selectionOwnerSet(gtk.widget.Widget widget, gdk.atom.Atom selection, uint time) nothrow

Claims ownership of a given selection for a particular widget, or, if widget is null, release ownership of the selection.

`widget`	a #GtkWidget, or null.
`selection`	an interned atom representing the selection to claim
`time`	timestamp with which to claim the selection

true if the operation succeeded