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.
