216         except:

   216         except:

   217             values = event.GetDragText()

   217             values = event.GetDragText()

   218         if isinstance(values, tuple):

   218         if isinstance(values, tuple):

   219             if values[1] in ["functionBlock", "program", "location"]:

   219             if values[1] in ["functionBlock", "program", "location"]:

   220                 event.SetDragText("")

   220                 event.SetDragText("")

   221             elif values[1] != "location":

   223             elif values[1] != "location":

   222                 if values[3] == self.TagName:

   224                 if values[3] == self.TagName:

   223                     event.SetDragText(values[0])

   225                     event.SetDragText(values[0])

   224                 else:

   226                 else:

   225                     event.SetDragText("")

   227                     event.SetDragText("")