This function is a convenience function to allow you to reorder models that support the `GtkTreeDragSourceIface` and the `GtkTreeDragDestIface`.
Both `GtkTreeStore` and `GtkListStore` support these. If 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
`GtkTreeModel:GtkTreeView:row-inserted` and `GtkTreeModel:GtkTreeView:row-deleted` signals. The reordering is
implemented by setting up the tree view as a drag source and destination. Therefore, drag and drop can not be used in a reorderable view
for any other purpose.
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.
| this |
A `GtkTreeView`. |
| reorderable |
true, if the tree can be reordered. |