I defined a TreeView in glade, how do I manipulate its columns and other properties?

Glade's support for TreeView is somewhat limited: you can only define a "blank" treeview. You must create the columns and (optionally) set other properties entirely in Python code. What glade can do is assign a model to it, define the model's columns and populate them.

Note that you get hold of your glade-defined treeview using get_object("treeview1") as you would for any other widget in the glade widget tree. Similarly, if you attached a model to it, you can get it via get_object("model"), or similar code. From there on you can use treeview API to add columns, work on its model, and manipulate its configuration.

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