get_row_from_iter
  
  Description:
  [ 
Version ( since = 
"4.2" ) ]
public int get_row_from_iter (
TreeIter iter)
  
 
  
    Get the number of the row represented by iter
    Parameters:
    
      
        | this | 
        
           a DataStore object 
         | 
      
      
        | iter | 
        
           a valid TreeIter 
         | 
      
    
    Returns:
    
      
        | 
           the row number, or -1 if an error occurred 
         |