[ CCode ( cname = "GTK_STYLE_REGION_COLUMN_HEADER" ) ]
[ Version ( deprecated = true , deprecated_since = "3.20" ) ]
public const string STYLE_REGION_COLUMN_HEADER
Warning: STYLE_REGION_COLUMN_HEADER is deprecated since 3.20.
A widget region name to define a treeview column header.
Don't use regions.