glutmousewheelfunc(3) [centos man page]

UNTITLED
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NAME

     glutMouseWheelFunc -- Sets the mouse wheel callback for the current window.

LIBRARY

     OpenGLUT - input

SYNOPSIS

     #include <openglut.h>

     void
     glutMouseWheelFunc(void( *callback )( int wheel, int direction, int x, int y ));

PARAMETERS

      callback	   Client hook for mouse wheel events.

DESCRIPTION

     If the mouse wheel is spun over your (sub)window, OpenGLUT will, in theory, report this via the MouseWheel callback.   wheel  is the wheel
     number,  direction  is +/- 1, and	x  and	y  are the mouse coordinates.

     If you do not register a wheel callback, wheel events will be reported as mouse buttons.

     This callback is bound to the  current window  .

CAVEATS

     Due to lack of information about the mouse, it is impossible to implement this correctly on X at this time.  Use of this function limits the
     portability of your application.  (This feature  does   work on X, just not reliably.)  You are encouraged to use the standard, reliable
     mouse-button reporting, rather than wheel events.

     Windows created via glutCreateMenuWindow() always cascade keyboard and mouse events to their parent.

SEE ALSO

     glutMouseFunc(3)

								       Epoch

glutMouseFunc(3GLUT)						       GLUT						      glutMouseFunc(3GLUT)

NAME

       glutMouseFunc - sets the mouse callback for the current window.

SYNTAX

       void glutMouseFunc(void (*func)(int button, int state,
			  int x, int y));

ARGUMENTS

       func	 The new mouse callback function.

DESCRIPTION

       glutMouseFunc  sets the mouse callback for the current window. When a user presses and releases mouse buttons in the window, each press and
       each release generates a mouse callback. The button parameter is one of GLUT_LEFT_BUTTON,  GLUT_MIDDLE_BUTTON,  or  GLUT_RIGHT_BUTTON.  For
       systems	with  only two mouse buttons, it may not be possible to generate GLUT_MIDDLE_BUTTON callback. For systems with a single mouse but-
       ton, it may be possible to generate only a GLUT_LEFT_BUTTON callback. The state parameter is either GLUT_UP or GLUT_DOWN indicating whether
       the  callback was due to a release or press respectively. The x and y callback parameters indicate the window relative coordinates when the
       mouse button state changed. If a GLUT_DOWN callback for a specific button is triggered, the program can assume a GLUT_UP callback  for  the
       same  button  will  be  generated (assuming the window still has a mouse callback registered) when the mouse button is released even if the
       mouse has moved outside the window.

       If a menu is attached to a button for a window, mouse callbacks will not be generated for that button.

       During a mouse callback, glutGetModifiers may be called to determine the state of modifier keys when the mouse event generating	the  call-
       back occurred.

       Passing NULL to glutMouseFunc disables the generation of mouse callbacks.

SEE ALSO

       glutKeyboardFunc, glutMotionFunc, glutSpaceballButtonFunc, glutButtonBoxFunc, glutTabletButtonFunc, glutGetModifiers

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7						      glutMouseFunc(3GLUT)