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glutButtonBoxFunc(3GLUT)             GLUT             glutButtonBoxFunc(3GLUT)


NAME

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


SYNTAX


       void glutButtonBoxFunc(void (*func)(int button, int state));


ARGUMENTS

       func      The new button box callback function.


DESCRIPTION

       glutButtonBoxFunc sets the dial & button box button callback for the
       current window. The dial & button box button 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 button presses. The button parameter will be the button number
       (starting at one). The number of available dial & button box buttons
       can be determined with glutDeviceGet(GLUT_NUM_BUTTON_BOX_BUTTONS). The
       state is either GLUT_UP or GLUT_DOWN indicating whether the callback
       was due to a release or press respectively.

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

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


SEE ALSO

       glutDialsFunc, glutDeviceGet, glutSpaceballButtonFunc,
       glutTabletButtonFunc


AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT                                  3.7             glutButtonBoxFunc(3GLUT)

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