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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <gki.h>
# GKI_RETCURSORVALUE -- Return a cursor value. Used by a graphics kernel to
# return a cursor value to GIO in response to a GETCURSOR instruction.
#
# BOI GKI_CURSORVALUE L CN KEY SX SY RN RX RY
#
# where
#
# L(i) 10
# CN(i) cursor number
# KEY(i) keystroke value (>= 0 or EOF)
# SX(i) NDC X screen coordinate of cursor
# SY(i) NDC Y screen coordinate of cursor
# RN(i) raster number or zero
# RX(i) NDC X raster coordinate of cursor
# RY(i) NDC Y raster coordinate of cursor
#
# The screen or display window coordinates SX and SY of the cursor are
# returned for all devices. Only some devices support multiple rasters.
# If the device supports rasters and the cursor is in a raster when read, the
# raster number and raster coordinates are returned in RN,RX,RY. This is in
# addition to the screen coordinates SX,SY. If raster coordinates are not
# returned, the raster number will be set to zero and RX,RY will be the same
# as SX,SY.
procedure gki_retcursorvalue (fd, cn, key, sx, sy, raster, rx, ry)
int fd #I output file
int cn #I cursor number
int key #I keystroke value
int sx, sy #I screen coordinates of cursor (GKI coords)
int raster #I raster number
int rx, ry #I raster coordinates of cursor (GKI coords)
short gki[GKI_CURSORVALUE_LEN]
data gki[1] /BOI/, gki[2] /GKI_CURSORVALUE/, gki[3] /GKI_CURSORVALUE_LEN/
begin
gki[GKI_CURSORVALUE_CN ] = cn
gki[GKI_CURSORVALUE_KEY] = key
gki[GKI_CURSORVALUE_SX ] = sx
gki[GKI_CURSORVALUE_SY ] = sy
gki[GKI_CURSORVALUE_RN ] = raster
gki[GKI_CURSORVALUE_RX ] = rx
gki[GKI_CURSORVALUE_RY ] = ry
call write (fd, gki, GKI_CURSORVALUE_LEN * SZ_SHORT)
end
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