Specifications

DDE reference
Gallagher & Robertson Glink: API reference manual 181
SysItems This simply provides a list of items that are request-
able. The list is separated with tab characters in the
normal way.
SysPokes This provides a list of items that are 'pokable', see
below.
UvtiGet Returns the current value of the UVTI status item.
This item may be set either using the script SET
UVTI command or using the UvtiPut DDE poke.
This is provided specifically for the return of status
codes from an executing script. To communicate
with the script you set up a hot link to the UvtiGet
item, and use SET UVTI commands in the script
itself. The advisement will be posted immediately
(although the script will continue executing).
Unlike normal items, the UvtiGet item will not
result in an advisement simply because the item
changes. It will only give an advisement when the
SET UVTI command is executed in the script (even
if the value does not change). In particular, a
UvtiPut command will not result in an
advisement.
VduFld N Collects data from the Nth field of the emulation
screen. If N is not specified then data is delivered
from the field containing the cursor. This command
applies only in 7700 and/or 7800 modes.
VduGet X Y DX DY Collects data from a rectangle on the emulation
screen. If the length DX is not specified then the rest
of the line will be returned. If the number of rows DY
is not specified then one line will be delivered. If the
position is not specified then the current cursor
position will be used.
If you wish to read data from the status line, you can
do this by specifying a row number of zero (in which
case only one line will be delivered).