glutChangeToSubMenu  -  changes the specified menu item in
the current menu into a sub-menu trigger.

glutChangeToSubMenu
	glutChangeToSubMenu(item, label, submenu) -> None

void glutChangeToSubMenu(int entry, char *name, int menu);

entry     Index into the menu items of the current menu (1
          is the topmost menu item).

name      ASCII  character  string  to display in the menu
          item to cascade the sub-menu from.

menu      Identifier of the menu to cascade from this sub-
          menu menu item.

glutChangeToSubMenu changes the specified menu item in the
current menu into a sub-menu trigger. The entry  parameter
determines  which  menu  item  should be changed, with one
being the topmost item. entry must be between 1 and  glut-
Get(GLUT_MENU_NUM_ITEMS)  inclusive.   The  menu  item  to
change does not have to be  a  sub-menu  trigger  already.
The  string  name  will be displayed for the newly changed
sub-menu trigger. The menu identifier names  the  sub-menu
to cascade from the newly added sub-menu trigger.

glutChangeToMenuEntry, glutAddSubMenu, glutRemoveMenuItem

Mark J. Kilgard (mjk@nvidia.com)