A.1 Types of State

These types are used to specify GLUT's programmer visible state:

Bitmask

A group of boolean bits.

Boolean

True or false.

Callback

A handle to a user-supplied routine invoked when the given callback is triggered (or NULL which is the default callback).

ColorCell

Red, green, and blue color component triple, an array of which makes a colormap.

Cursor

A GLUT cursor name.

Integer

An integer value.

Layer

Either normal plane or overlay.

MenuItem

Either a menu entry or a submenu trigger. Both subtypes contain of a String name. A menu entry has an Integer value. A submenu cascade has an Integer menu name naming its associated submenu.

MenuState

Either in use or not in use.

Stacking

An ordering for top-level windows and sub-windows having the same parent. Higher windows obscure lower windows.

State

One of shown, hidden, or iconified.

String

A string of ASCII characters.

Timer

A triple of a timer Callback, an Integer callback parameter, and a time in milliseconds (that expires in real time).