+/**
+ * GtkSizeGroupMode:
+ * @GTK_SIZE_GROUP_NONE: group has no effect
+ * @GTK_SIZE_GROUP_HORIZONTAL: group affects horizontal requisition
+ * @GTK_SIZE_GROUP_VERTICAL: group affects vertical requisition
+ * @GTK_SIZE_GROUP_BOTH: group affects both horizontal and vertical requisition
+ *
+ * The mode of the size group determines the directions in which the size
+ * group affects the requested sizes of its component widgets.
+ **/
+typedef enum {
+ GTK_SIZE_GROUP_NONE,
+ GTK_SIZE_GROUP_HORIZONTAL,
+ GTK_SIZE_GROUP_VERTICAL,
+ GTK_SIZE_GROUP_BOTH
+} GtkSizeGroupMode;
+