Both TreeStore and ListStore support
reorderable is true, then the user can reorder the model by dragging and dropping
rows. The developer can listen to these changes by connecting to the model's row_inserted and row_deleted signals. The reordering is implemented
by setting up the icon view as a drag source and destination. Therefore, drag and drop can not be used in a reorderable view for any other
This function does not give you any degree of control over the order -- any reordering is allowed. If more control is needed, you should probably handle drag and drop manually.
true, if the list of items can be reordered.