gtk/tree_view.go
func (v *TreeView) GetSelection() (*TreeSelection, error) {
	c := C.gtk_tree_view_get_selection(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapTreeSelection(glib.Take(unsafe.Pointer(c))), nil
}
func (v *TreeView) GetSelection() (*TreeSelection, error) {
	c := C.gtk_tree_view_get_selection(v.native())
	if c == nil {
		return nil, nilPtrErr
	}
	return wrapTreeSelection(glib.Take(unsafe.Pointer(c))), nil
}
// GetSelection is a wrapper around gtk_tree_view_get_selection().