Virtualvfunc_Asks the Gtk.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!
Virtualvfunc_Asks the Gtk.TreeDragSource to fill in selection_data with a
representation of the row at path. selection_data->target gives
the required type of the data. Should robustly handle a path no
longer found in the model!
row that was dragged
a Gtk.SelectionData to fill with data from the dragged row
Virtualvfunc_Asks the Gtk.TreeDragSource whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable.
Interface for implementing TreeDragSource. Contains only the virtual methods that need to be implemented.