Signature
Parameters
Description
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
glutGet(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.