void gtk_tree_view_column_set_expand ( GtkTreeViewColumn* tree_column, gboolean expand )
Sets the column to take available extra space. This space is shared equally
amongst all columns that have the expand set to
TRUE. If no column has this
option set, then the last column gets all extra space. By default, every
column is created with this
Along with “fixed-width”, the “expand” property changes when the column is resized by the user.
Deprecated since: 4.10
Use GtkColumnView instead.