Background processing
Tim Cummings
tim.cummings@frequencymarketing.com
Thu, 14 Aug 2003 11:34:05 -0400
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Kenn,
There is a "START" command in DOS that you can use.
start /LOW /MIN /WAIT "Title to display in window title bar" dos
command/bat file
Tim Cummings
Loveland, OH
C:\WINNT\system32>help start
Starts a separate window to run a specified program or command.
START ["title"] [/Dpath] [/I] [/MIN] [/MAX] [/SEPARATE | /SHARED]
[/LOW | /NORMAL | /HIGH | /REALTIME | /ABOVENORMAL | /BELOWNORMAL]
[/WAIT] [/B] [command/program]
[parameters]
"title" Title to display in window title bar.
path Starting directory
B Start application without creating a new window. The
application has ^C handling ignored. Unless the application
enables ^C processing, ^Break is the only way to interrupt
the application
I The new environment will be the original environment passed
to the cmd.exe and not the current environment.
MIN Start window minimized
MAX Start window maximized
SEPARATE Start 16-bit Windows program in separate memory space
SHARED Start 16-bit Windows program in shared memory space
LOW Start application in the IDLE priority class
NORMAL Start application in the NORMAL priority class
HIGH Start application in the HIGH priority class
REALTIME Start application in the REALTIME priority class
ABOVENORMAL Start application in the ABOVENORMAL priority class
BELOWNORMAL Start application in the BELOWNORMAL priority class
WAIT Start application and wait for it to terminate
command/program
If it is an internal cmd command or a batch file then
the command processor is run with the /K switch to cmd.exe.
This means that the window will remain after the command
has been run.
If it is not an internal cmd command or batch file then
it is a program and will run as either a windowed
application
or a console application.
parameters These are the parameters passed to the command/program
If Command Extensions are enabled, external command invocation
through the command line or the START command changes as follows:
non-executable files may be invoked through their file association just
by typing the name of the file as a command. (e.g. WORD.DOC would
launch the application associated with the .DOC file extension).
See the ASSOC and FTYPE commands for how to create these
associations from within a command script.
When executing an application that is a 32-bit GUI application, CMD.EXE
does not wait for the application to terminate before returning to
the command prompt. This new behavior does NOT occur if executing
within a command script.
When executing a command line whose first token is the string "CMD "
without an extension or path qualifier, then "CMD" is replaced with
the value of the COMSPEC variable. This prevents picking up CMD.EXE
from the current directory.
When executing a command line whose first token does NOT contain an
extension, then CMD.EXE uses the value of the PATHEXT
environment variable to determine which extensions to look for
and in what order. The default value for the PATHEXT variable
is:
.COM;.EXE;.BAT;.CMD
Notice the syntax is the same as the PATH variable, with
semicolons separating the different elements.
When searching for an executable, if there is no match on any extension,
then looks to see if the name matches a directory name. If it does, the
START command launches the Explorer on that path. If done from the
command line, it is the equivalent to doing a CD /D to that path.
-----Original Message-----
From: Kenn Baynton [mailto:bayntonk@ElectionsOntario.on.ca]
Sent: Thursday, August 14, 2003 10:50 AM
To: PowerHouse List (E-mail)
Subject: Background processing
Greetings all,
As some of you may know, I am engaged in a conversion project to
move from OpenVMS/ Interbase 3.3J/ PH 7.1 to Win2K/ Oracle9i/ PH 8.41C. I
have run into an issue that I hope the collective can help with.
I know both Unix and OpenVMS have queues, secondary process areas
that run in the background. MSDos has no such functionality to my
knowledge. I am trying to run a QUIZ report from a QUICK screen, but I
don't want the command process text to overlay the QUICK screen. Does
anyone know a way to run a process in the background from Win2K/DOS? It has
been suggested to me that Windows Scripting could probably run my process in
a separate DOS Command window, but I am unsure how to proceed. If anyone
has done something like this, I would appreciate your input, and if
possible, a code sample.
Thanks
Kenn Baynton
= = = = = = = = = = = = = = = = = = = = = = = = = = = =
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