gtk/tree_view.go
func (v *TreeView) SetTooltipColumn(c int) {
	C.gtk_tree_view_set_tooltip_column(v.native(), C.gint(c))
}
func (v *TreeView) SetTooltipColumn(c int) {
	C.gtk_tree_view_set_tooltip_column(v.native(), C.gint(c))
}
// SetTooltipColumn is a wrapper around gtk_tree_view_set_tooltip_column().