Gtk.TreeDragDest::row_drop_possible

function vfunc_row_drop_possible(dest_path:Gtk.TreePath, selection_data:Gtk.SelectionData):Boolean {
}

Determines whether a drop is possible before the given dest_path, at the same depth as dest_path. i.e., can we drop the data in selection_data at that location. dest_path does not have to exist; the return value will almost certainly be false if the parent of dest_path doesn't exist, though.