HP Data Entry and Forms Management System (VPLUS) Reference Manual (32209-90024)

242 Chapter6
USING VPLUS INTRINSICS
COMMUNICATION AREA
this section).
If
lookahead is zero and a family member of the form specified as the next
form is already in the terminal's local form storage memory, the new form
is not loaded. Instead, the family member is changed into the required
form when it is displayed. The
lookahead feature is ignored if the
terminal does not have form storage capability.
deleteflag Two-byte logical flag that indicates whether the current batch record has
been or is to be deleted. The
deleteflag is returned by VREADBATCH and
used by VWRITEBATCH:
• FALSE (all zeros) = Current batch record not deleted
• TRUE (all ones) = Delete current batch record
showcontrol Control options for VSHOWFORM or VREADFIELDS. These bits remain set
until an application resets them. The following bits can be set:
bit 15 = 1 Force form to be written to the terminal screen; overrides
VPLUS optimization.
14 = 1 Force data and field enhancements to be written to the
terminal screen; overrides VPLUS optimization.
13 = 1 Force window line to be written to the terminal screen;
overrides VPLUS optimization.
12 = 0 Stop after displaying a form without fields (default); data
capture devices only.
1 Do not stop after displaying a form without fields; data
capture devices only.
11 = 0 Do not put a right closing bracket (]) on all input fields
(default); data capture devices only.
1 Put a right closing bracket (]) on all input fields; data
capture devices only.
10 = 0 Enable the keyboard for input (default).
1 Do not enable the keyboard.
9 = 0 Do not preload form into the terminal's local form storage
memory but write it directly to the screen (however,
VSHOWFORM always checks to see if the form is in local
storage already) (default).
1 Preload form into the terminal's local form storage
memory if it is not already there. Forms could be purged
from local form storage if there is not room for the form
(this could occur even when
lookahead is 1).
8 = 0 Do not enable
AIDS, MODES, or USERKEYS (default).
1 Enable
AIDS, MODES, and USERKEYS. These keys are
enabled after a form is displayed on the screen and remain