XSynchronize(3X11)

NAME
       XSynchronize, XSetAfterFunction - enable or disable syn-
       chronization

SYNTAX
       int (*XSynchronize(display, onoff))()
             Display *display;
             Bool onoff;

       int (*XSetAfterFunction(display, procedure))()
             Display *display;
             int (*procedure)();

ARGUMENTS
       display   Specifies the connection to the X server.

       procedure Specifies the procedure to be called.

       onoff     Specifies a Boolean value that indicates whether
                 to enable or disable synchronization.

DESCRIPTION
       The XSynchronize function returns the previous after func-
       tion.  If onoff is True, XSynchronize turns on synchronous
       behavior.  If onoff is False, XSynchronize turns off syn-
       chronous behavior.

       The specified procedure is called with only a display
       pointer.  XSetAfterFunction returns the previous after
       function.

SEE ALSO
       XSetErrorHandler(3X11) 
       Xlib - C Language X Interface