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 func-
       tion 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 glutSpecialFunc 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 call-
       back 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_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 generated as an ASCII character.

SEE ALSO

       glutSpecialUpFunc, glutKeyboardFunc, glutMouseFunc, glutSpaceballButtonFunc, glutButtonBoxFunc, glutTabletButtonFunc, glutGetModifiers

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7						    glutSpecialFunc(3GLUT)