glutChangeToSubMenu
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## Name

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

## C Specification

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

## Python Specification

``glutChangeToSubMenu`` | `(` | ``entry`, `name`, `menu`) → `None``

## Parameters

`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.

## 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.

## See Also

glutChangeToMenuEntry, glutAddSubMenu, glutRemoveMenuItem

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