Used by GtkTreeViewColumn set_sizing() .
Value | Symbolic name | Description |
| 0 | Gtk::GtkTreeViewColumnSizing | Columns only get bigger in reaction to changes in the model. |
| 1 | Gtk::TREE_VIEW_COLUMN_AUTOSIZE | Columns resize to be the optimal size everytime the model changes. |
| 2 | Gtk::TREE_VIEW_COLUMN_FIXED | Columns are a fixed numbers of pixels wide. |