glutwindowstatusfunc(3) [centos man page]

UNTITLED
							       LOCAL								  UNTITLED

NAME

     glutWindowStatusFunc -- Sets the window status callback.

LIBRARY

     OpenGLUT - windowcallback

SYNOPSIS

     #include <openglut.h>

     void
     glutWindowStatusFunc(void( *callback )( int state ));

PARAMETERS

      callback	   Client window status hook.

DESCRIPTION

     When the visibility status of your window changes, OpenGLUT either invokes the  callback  registered by this function or the Visibility
     callback---or  neither, if you have not registered either callback.

     This differs from glutVisbilityFunc() in that the callback has three states, rather than two, that it may receive.  These states are:

      -  GLUT_VISIBLE	     (every pixel visible)
      -  GLUT_FULLY_COVERED  (every pixel obscured)
      -  GLUT_HIDDEN	     (intermediate)

     The callback is bound to the  current window  .

CAVEATS

     Makes glutVisibilityFunc() obsolete.

SEE ALSO

     glutVisibilityFunc(3)

								       Epoch

glutVisibilityFunc(3GLUT)					       GLUT						 glutVisibilityFunc(3GLUT)

NAME

       glutVisibilityFunc - sets the visibility callback for the current window.

SYNTAX

       void glutVisibilityFunc(void (*func)(int state));

ARGUMENTS

       func	 The new visibility callback function.

DESCRIPTION

       glutVisibilityFunc  sets the visibility callback for the current window. The visibility callback for a window is called when the visibility
       of a window changes. The state callback parameter is either GLUT_NOT_VISIBLE or GLUT_VISIBLE depending on the  current  visibility  of  the
       window.	GLUT_VISIBLE does not distinguish a window being totally versus partially visible. GLUT_NOT_VISIBLE means no part of the window is
       visible, i.e., until the window's visibility changes, all further rendering to the window is discarded.

       GLUT considers a window visible if any pixel of the window is visible or any pixel of any descendant window is visible on the screen.

       Passing NULL to glutVisibilityFunc disables the generation of the visibility callback.

       If the visibility callback for a window is disabled and later re-enabled, the visibility status of the window is undefined; any	change	in
       window  visibility  will  be reported, that is if you disable a visibility callback and re-enable the callback, you are guaranteed the next
       visibility change will be reported.

SEE ALSO

       glutCreateWindow, glutPopWindow

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7						 glutVisibilityFunc(3GLUT)