Asks the gtk.tree_drag_source.TreeDragSource to delete the row at path, because
it was moved somewhere else via drag-and-drop. Returns false
if the deletion fails because path no longer exists, or for
some model-specific reason. Should robustly handle a path no
longer found in the model!
Asks the gtk.tree_drag_source.TreeDragSource to delete the row at path, because it was moved somewhere else via drag-and-drop. Returns false if the deletion fails because path no longer exists, or for some model-specific reason. Should robustly handle a path no longer found in the model!