Sets the cell renderer based on the tree_model and iter.
Use GtkColumnView instead
That is, for every attribute mapping in this, it will get a value from the set column on the
iter, and use that value to set the attribute on the cell renderer. This is used primarily by the `GtkTreeView`.
| this |
A `GtkTreeViewColumn`. |
| tree_model |
The `GtkTreeModel` to get the cell renderers attributes from. |
| iter |
The `GtkTreeIter` to get the cell renderer’s attributes from. |
| is_expander |
true, if the row has children |
| is_expanded |
true, if the row has visible children |