glutkeyboardfunc(3)
NAME
glutKeyboardFunc - sets the keyboard callback for the cur
rent window.
SYNTAX
- void glutKeyboardFunc(void (*func)(unsigned char key,
- int x, int y));
ARGUMENTS
func The new keyboard callback function.
DESCRIPTION
glutKeyboardFunc sets the keyboard callback for the cur
rent window. When a user types into the window, each key
press generating an ASCII character will generate a key
board callback. The key callback parameter is the gener
ated ASCII character. The state of modifier keys such as
Shift cannot be determined directly; their only effect
will be on the returned ASCII data. The x and y callback
parameters indicate the mouse location in window relative
coordinates when the key was pressed. When a new window is
created, no keyboard callback is initially registered, and
ASCII key strokes in the window are ignored. Passing NULL
to glutKeyboardFunc disables the generation of keyboard
callbacks.
During a keyboard callback, glutGetModifiers may be called
to determine the state of modifier keys when the keystroke
generating the callback occurred.
Use glutSpecialFunc for a means to detect non-ASCII key
strokes.
SEE ALSO
glutKeyboardUpFunc, glutSpecialFunc, glutCreateWindow,
glutMouseFunc, glutSpaceballButtonFunc, glutButtonBoxFunc,
glutTabletButtonFunc, glutGetModifiers
AUTHOR
- Mark J. Kilgard (mjk@nvidia.com)