This inserts the column into the this at position.
Use [class@Gtk.ListView] or [class@Gtk.ColumnView] instead
If position is -1, then the column is inserted at the end. If this has “fixed_height”
mode enabled, then column must have its “sizing” property set to be GTK_TREE_VIEW_COLUMN_FIXED.
| this |
A `GtkTreeView`. |
| column |
The `GtkTreeViewColumn` to be inserted. |
| position |
The position to insert |
|
The number of columns in this after insertion. |