glutDialsFunc(3GLUT)						       GLUT						      glutDialsFunc(3GLUT)

NAME

       glutDialsFunc - sets the dial & button box dials callback for the current window.

SYNTAX

       void glutDialsFunc(void (*func)(int dial, int value));

ARGUMENTS

       func	 The new dials callback function.

DESCRIPTION

       glutDialsFunc sets the dial & button box dials callback for the current window. The dial & button box dials callback for a window is called
       when the window has dial & button box input focus (normally, when the mouse is in the window) and the user generates dial & button box dial
       changes.  The  dial  parameter will be the dial number (starting at one). The number of available dial & button box dials can be determined
       with glutDeviceGet(GLUT_NUM_DIALS). The value measures the absolute rotation in degrees. Dial values do not ``roll over''  with	each  com-
       plete rotation but continue to accumulate degrees (until the int dial value overflows).

       Registering  a  dial  & button box dials callback when a dial & button box device is not available is ineffectual and not an error. In this
       case, no dial & button box dials callbacks will be generated.

       Passing NULL to glutDialsFunc disables the generation of dial & button box dials callbacks. When a new window is created, no dial &  button
       box dials callback is initially registered.

SEE ALSO

       glutButtonBoxFunc, glutDeviceGet

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7						      glutDialsFunc(3GLUT)