GTK_UNIT_MM
} GtkUnit;
+/**
+ * GtkTreeViewGridLines:
+ * @GTK_TREE_VIEW_GRID_LINES_NONE: No grid lines.
+ * @GTK_TREE_VIEW_GRID_LINES_HORIZONTAL: Horizontal grid lines.
+ * @GTK_TREE_VIEW_GRID_LINES_VERTICAL: Vertical grid lines.
+ * @GTK_TREE_VIEW_GRID_LINES_BOTH: Horizontal and vertical grid lines.
+ *
+ * Used to indicate which grid lines to draw in a tree view.
+ */
typedef enum
{
GTK_TREE_VIEW_GRID_LINES_NONE,