column into the tree.view at position. If position is
-1, then the column is inserted at the end. If tree.view has
"fixed_height" mode enabled, then column must have its "sizing" property
set to be GTK_TREE_VIEW_COLUMN_FIXED.gtkTreeViewInsertColumn(object, column, position)objectGtkTreeView.columnGtkTreeViewColumn to be inserted.positioncolumn in.tree.view after insertion.