HP 3000 Manuals HP 3000 Manuals
USER ENVIRONMENT CONTROL FILE
The user environment control file is called VENVCNTL.PUB.SYS, and is
designed to let the programmer assert limited control over terminal
activities. It is opened and read on the VOPENTERM call, and it controls
these two items in the user environment.
1. Abbreviating a terminal query. When VOPENTERM is called, it
usually does through a complicated process to identify the
terminal type. The VENVCNTL file shortens the identification
process. However, it should only be used if it is known that a
query will elicit a valid terminal ID. To shorten the terminal
query, enter 1 in the first column of the VENVCNTL file.
2. Enabling AIDS/MODES/USERKEYS without a program. Instead of
setting the SHOWCONTROL word of the user's comarea in the
application, enter 1 in the second column of the VENVCNTL file.
This option is very useful if you do not have the source code for
the software but you want to enable AIDS/MODES/USERKEYS.
To implement a user environment control file, build this file:
:BUILD VENVCNTL.PUB.SYS;DEV=DISC;REC=-80,1,F,ASCII
Use any editor to enter 1 in column 1 and/or 2. When VOPENTERM executes,
it looks for the VENVCNTL file. If it does not find it, VPLUS/V carries
out its usual operations. If the file exists and columns 1 and/or 2 are
set, VPLUS/V performs either or both of the prescribed actions.
The VENVCNTL file need not necessarily by in PUB.SYS. However, if you
have the file residing in another group and account, you must set up the
file equation:
:FILE VENVCNTL.PUB.SYS=VENVCNTL.mygroup.myaccount