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glutSpecialFunc(3GLUT)	       GLUT	   glutSpecialFunc(3GLUT)

NAME
       glutSpecialFunc	-  sets the special keyboard callback for
       the current window.

SYNTAX
       void glutSpecialFunc(void (*func)(int key, int x, int y));

ARGUMENTS
       func	 The new special callback function.

DESCRIPTION
       glutSpecialFunc sets the special keyboard callback for the
       current window. The special keyboard callback is triggered
       when keyboard function or directional  keys  are	 pressed.
       The  key	 callback  parameter is a GLUT_KEY_* constant for
       the special key pressed. The x and y  callback  parameters
       indicate the mouse in window relative coordinates when the
       key was pressed. When a new window is created, no  special
       callback	 is  initially registered and special key strokes
       in the window are ignored.  Passing NULL	 to  glutSpecial
       Func disables the generation of special callbacks.

       During  a special callback, glutGetModifiers may be called
       to determine the state of modifier keys when the keystroke
       generating the callback occurred.

       An  implementation  should  do its best to provide ways to
       generate all the GLUT_KEY_* special  keys.  The	available
       GLUT_KEY_* values are:

       GLUT_KEY_F1
	       F1 function key.

       GLUT_KEY_F2
	       F2 function key.

       GLUT_KEY_F3
	       F3 function key.

       GLUT_KEY_F4
	       F4 function key.

       GLUT_KEY_F5
	       F5 function key.

       GLUT_KEY_F6
	       F6 function key.

       GLUT_KEY_F7
	       F7 function key.

       GLUT_KEY_F8
	       F8 function key.

GLUT			       3.7				1

glutSpecialFunc(3GLUT)	       GLUT	   glutSpecialFunc(3GLUT)

       GLUT_KEY_F9
	       F9 function key.

       GLUT_KEY_F10
	       F10 function key.

       GLUT_KEY_F11
	       F11 function key.

       GLUT_KEY_F12
	       F12 function key.

       GLUT_KEY_LEFT
	       Left directional key.

       GLUT_KEY_UP
	       Up directional key.

       GLUT_KEY_RIGHT
	       Right directional key.

       GLUT_KEY_DOWN
	       Down directional key.

       GLUT_KEY_PAGE_UP
	       Page up directional key.

       GLUT_KEY_PAGE_DOWN
	       Page down directional key.

       GLUT_KEY_HOME
	       Home directional key.

       GLUT_KEY_END
	       End directional key.

       GLUT_KEY_INSERT
	       Inset directional key.

       Note  that the escape, backspace, and delete keys are gen
       erated as an ASCII character.

SEE ALSO
       glutSpecialUpFunc,    glutKeyboardFunc,	   glutMouseFunc,
       glutSpaceballButtonFunc, glutButtonBoxFunc, glutTabletBut
       tonFunc, glutGetModifiers

AUTHOR
       Mark J. Kilgard (mjk@nvidia.com)

GLUT			       3.7				2

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