glutButtonBoxFunc man page on OpenSuSE

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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,	glutTabletButā€
       tonFunc

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

GLUT				      3.7	      glutButtonBoxFunc(3GLUT)
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