NAME

       GCLRWK - clears a GKS workstation

SYNOPSIS

       CALL GCLRWK (WKID, COFL)

C-BINDING SYNOPSIS

       #include <ncarg/gks.h>

       void gclear_ws(Gint ws_id, Gctrl_flag  ctrl_flag);

DESCRIPTION

       WKID        (Integer, Input) - A number identifying the workstation to be cleared.  WKID must be the same
                   as that used in some previous GOPWK call.

       COFL        (Integer, Input) - Clear the workstation display surface. Options are:

                   0      Check  to  see  if  the  display surface is empty. If so, do not issue a clear surface
                          command.

                   1      Issue a clear surface command whether the surface has been written to or not.

USAGE

       For workstations of type "1" (CGM), GCLRWK is interpreted as a picture termination in CGM generation.  If
       COFL  =  0  and no output primitives have been written in the current picture, then a call to GCLRWK is a
       "do nothing"; otherwise, it generates an END PICTURE element  (as  well  as  other  picture  initializing
       elements). If COFL = 1, then a call to GCLRWK generates an END PICTURE.

       For  workstations of types "7" or "8" (see the man page for GOPWK for a description of workstation types)
       clear workstations erases all primitives that appear on the screen.

       For all other workstation types, clear workstation simply updates the workstation.

ACCESS

       To use GKS routines, load the NCAR GKS-0A library ncarg_gks.

SEE ALSO

       Online: gopwk, gacwk, gdawk, gclwk, gclear_ws

       Hardcopy: User's Guide for NCAR GKS-0A Graphics; NCAR Graphics Fundamentals, UNIX Version

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

UNIX                                               March 1993                                     GCLRWK(3NCARG)