The source of the setup program included with DOOM, Final DOOM, Strife, etc.

MENU.H

@@ -0,0 +1,33 @@
+//
+// MENU.H
+//
+
+//
+// Structures for menu
+//
+typedef struct item_s
+{
+	int	id;			 	// enum value for id (i.e., MODSKILL1)
+	int	x;				 	// x-coord of item
+	int	y;
+	int	w;				 	// width of item (for inverse bar)
+	int	left;				// item # if LEFT ARROW pressed (-1 = none)
+	int	right;			// item # if RIGHT ARROW pressed (-1 = none)
+	int	up;				// item # if UP ARROW pressed (0 = none)
+	int	down;				// item # if DOWN ARROW pressed (0 = none)
+} item_t;
+
+typedef struct
+{
+	item_t	*items;		// * to items
+	int	startitem;		// item to start on
+	int	maxitems;		// # of items in menu
+	char	invert;			// attribute for inversion
+} menu_t;
+
+void	SetupMenu(menu_t *menu);
+int	GetMenuInput(void);
+void	SetMark(item_t *item,int value);
+void Sound(int freq, int dly);
+
+extern short menukey;