tree_get_row_drag_data
Description:
public bool tree_get_row_drag_data (SelectionData selection_data, out unowned TreeModel? tree_model, out TreePath? path)
Obtains a tree_model and path from selection data of target type gtk_tree_model_row
      .
 Normally called from a drag_data_received handler. This function can only be used if selection_data originates from the same 
      process that’s calling this function, because a pointer to the tree model is being passed around. If you aren’t in the same process, then 
      you'll get memory corruption. In the TreeDragDest drag_data_received handler, 
      you can assume that selection data of type gtk_tree_model_row is in from the current process. The returned 
      path must be freed with free.
Parameters:
| selection_data | |
| tree_model | |
| path | 
           row in   | 
      
Returns:
| 
           true if   | 
      
Namespace: Gtk
  
  Package: gtk+-3.0