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

318 Chapter6
USING VPLUS INTRINSICS
INTRINSIC DESCRIPTIONS
VOPENFORMF
Opens forms file for access.
Syntax
VOPENFORMF { comarea,formfile }
Parameters
comarea The comarea name must be unique for each open forms file. If not already
set, the following
comarea items must be set before calling VOPENFORMF:
cstatus Set to zero.
language Set to the code identifying the programming language of
the calling program.
comarealen Set to total number of two-byte words in comarea .
usrbuflen BASIC programs only; set to number of two-byte words
needed for
comarea extension.
labeloption Set to zero or one.
formstoresize Set to minus one, zero, or one through 255 to indicate
the number of forms allowed in the form storage directory.
VOPENFORMF sets the following
comarea items:
cstatus Set to nonzero value if call unsuccessful.
lastkey Set to zero.
numerrs Set to zero.
recnum Set to zero.
dbuflen Set to zero.
cmode Set to zero (collect mode).
repeatapp Set to zero (no repeat/append).
freezapp Set to zero (clear current form).
printfilnum Set to zero.
deleteflag Set to FALSE (all zeros) (used for batch file intrinsics).
cfname Set to blank.
nfname Set to name of head form.
cstatus Set to nonzero value if call unsuccessful.
filerrnum Set to file error code if MPE file error.
windowenh Set to enhancement code defined in forms file.
If the data capture devices are used:
errorlight Set to default or user specified value.