set_visible_column
Description:
Sets column of the child_model to be the column where this should look for visibility
information.
columns should be a column of type g_type_boolean, where true
means that a row is visible, and false if not.
Note that set_visible_func or set_visible_column can only be called once for a given filter model.
Parameters:
| this | |
| column |
A SortColumn which is the column containing the visible information |