Process.Start ignores WindowStyle

  • Thread starter Thread starter Paul
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Paul

Hi,
I am trying to start a process hidden. My code:

wordprocess = new System.Diagnostics.Process(); ;
wordprocess.StartInfo = new System.Diagnostics.ProcessStartInfo(wcmd,
args);
wordprocess.StartInfo.WindowStyle =
System.Diagnostics.ProcessWindowStyle.Hidden;
wordprocess.StartInfo.WorkingDirectory = TemplatePath.Substring(0,
TemplatePath.Length - 1);
wordprocess.StartInfo.ErrorDialog = false;
wordprocess.StartInfo.CreateNoWindow = true;
wordprocess.StartInfo.UseShellExecute = true;

The process is started but it is visible.

CreateNoWindow has no effect because the process I am starting is not a
command line process. I have tried UseShellExecute being true and
false. I have tried to start the process minimized but that has also no
effect. I found several threads discussing this problem but nobody
wrote anything that solves the problem.

With best regards,
Paul Hoepping
Germany.
 
Paul,

Does this Process receive input? If so; the Process Window can not be
Hidden:
Hidden
The hidden window style. A window can be either visible or hidden. The
system displays a hidden window by not drawing it. If a window is hidden,
it is effectively disabled. A hidden window can process messages from the
system or from other windows, but it cannot process input from the user or
display output. Frequently, an application may keep a new window hidden
while it customizes the window's appearance, and then make the window style
Normal.

Is tis what you want?
--------------------
From: "Paul" <[email protected]>
Newsgroups: microsoft.public.dotnet.languages.csharp
Subject: Process.Start ignores WindowStyle
Date: 30 Apr 2006 11:39:23 -0700
Organization: http://groups.google.com
Lines: 26
Message-ID: <[email protected]>
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X-Trace: posting.google.com 1146422368 21500 127.0.0.1 (30 Apr 2006 18:39:28 GMT)
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NNTP-Posting-Date: Sun, 30 Apr 2006 18:39:28 +0000 (UTC)
User-Agent: G2/0.2
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Click to expand...
CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727),gzip(gfe),gzip(gfe)
Complaints-To: (e-mail address removed)
Injection-Info: j73g2000cwa.googlegroups.com; posting-host=80.139.117.112;
posting-account=gSJLpA0AAADKotUi5Y3_RDioGP1EBxvc
Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTFEEDS01.phx.gbl!newsfeed.c
w.net!cw.net!news-FFM2.ecrc.de!newsfeed.gamma.ru!Gamma.RU!postnews.google.co
m!j73g2000cwa.googlegroups.com!not-for-mail
Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.dotnet.languages.csharp:401433
X-Tomcat-NG: microsoft.public.dotnet.languages.csharp

Hi,
I am trying to start a process hidden. My code:

wordprocess = new System.Diagnostics.Process(); ;
wordprocess.StartInfo = new System.Diagnostics.ProcessStartInfo(wcmd,
args);
wordprocess.StartInfo.WindowStyle =
System.Diagnostics.ProcessWindowStyle.Hidden;
wordprocess.StartInfo.WorkingDirectory = TemplatePath.Substring(0,
TemplatePath.Length - 1);
wordprocess.StartInfo.ErrorDialog = false;
wordprocess.StartInfo.CreateNoWindow = true;
wordprocess.StartInfo.UseShellExecute = true;

The process is started but it is visible.

CreateNoWindow has no effect because the process I am starting is not a
command line process. I have tried UseShellExecute being true and
false. I have tried to start the process minimized but that has also no
effect. I found several threads discussing this problem but nobody
wrote anything that solves the problem.

With best regards,
Paul Hoepping
Germany.
Click to expand...

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fprq2\fcharset0
MS Sans Serif;}{\f1\fswiss\fcharset0 Arial;}}
{\*\generator Msftedit 5.41.21.2500;}\viewkind4\uc1\pard\f0\fs20 Cheers,\par
\par
johnKn [MS-SDK]\par
\par
\par
\par
-Please do not send email directly to this alias. This alias is for \par
newsgroup purposes only\par
\par
-This posting is provided "AS IS" with no warranties, and confers no
rights.\par
\par
-To provide additional feedback about your community experience please send
\par
e-mail to: (e-mail address removed)\par
\f1\par
}
 
John,
the process receives no input. If I use C++ and WIN32-API CreateProcess
the process does not become visible.

The process is MS Word and I want it to work on a .doc-File that
contains VBA macro code. When finished, the VBA code will terminate
Word.

It works but Word is visible while working on the VBA macro. I came to
the conclusion that Process.Start may not handle the Hidden-flag
correctly. As a workaround, I am placing my own application window in
front of word. Later I will probably have to write a little C++ process
that handles starting Word.

Another solution would be to use the Word COM-objects instead of
starting Word as a new process. I do not really like that solution. It
creates dependencies I would like to avoid and an in-process COM object
may have adverse effects on my application. When started as an external
process, Word cannot hurt my application and I can terminate the
process if it behaves badly.

Anyway, thanks for your help.

Regards,
Paul Hoepping
Paul,

Does this Process receive input? If so; the Process Window can not be
Hidden:
Hidden
The hidden window style. A window can be either visible or hidden. The
system displays a hidden window by not drawing it. If a window is hidden,
it is effectively disabled. A hidden window can process messages from the
system or from other windows, but it cannot process input from the user or
display output. Frequently, an application may keep a new window hidden
while it customizes the window's appearance, and then make the window style
Normal.

Is tis what you want?
--------------------
From: "Paul" <[email protected]>
Newsgroups: microsoft.public.dotnet.languages.csharp
Subject: Process.Start ignores WindowStyle
Date: 30 Apr 2006 11:39:23 -0700
Organization: http://groups.google.com
Lines: 26
Message-ID: <[email protected]>
NNTP-Posting-Host: 80.139.117.112
Mime-Version: 1.0
Content-Type: text/plain; charset="iso-8859-1"
X-Trace: posting.google.com 1146422368 21500 127.0.0.1 (30 Apr 2006 18:39:28 GMT)
X-Complaints-To: (e-mail address removed)
NNTP-Posting-Date: Sun, 30 Apr 2006 18:39:28 +0000 (UTC)
User-Agent: G2/0.2
X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET
Click to expand...
CLR 1.1.4322; .NET CLR 1.0.3705; .NET CLR 2.0.50727),gzip(gfe),gzip(gfe)
Complaints-To: (e-mail address removed)
Injection-Info: j73g2000cwa.googlegroups.com; posting-host=80.139.117.112;
posting-account=gSJLpA0AAADKotUi5Y3_RDioGP1EBxvc
Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTFEEDS01.phx.gbl!newsfeed.c
w.net!cw.net!news-FFM2.ecrc.de!newsfeed.gamma.ru!Gamma.RU!postnews.google.co
m!j73g2000cwa.googlegroups.com!not-for-mail
Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.dotnet.languages.csharp:401433
X-Tomcat-NG: microsoft.public.dotnet.languages.csharp

Hi,
I am trying to start a process hidden. My code:

wordprocess = new System.Diagnostics.Process(); ;
wordprocess.StartInfo = new System.Diagnostics.ProcessStartInfo(wcmd,
args);
wordprocess.StartInfo.WindowStyle =
System.Diagnostics.ProcessWindowStyle.Hidden;
wordprocess.StartInfo.WorkingDirectory = TemplatePath.Substring(0,
TemplatePath.Length - 1);
wordprocess.StartInfo.ErrorDialog = false;
wordprocess.StartInfo.CreateNoWindow = true;
wordprocess.StartInfo.UseShellExecute = true;

The process is started but it is visible.

CreateNoWindow has no effect because the process I am starting is not a
command line process. I have tried UseShellExecute being true and
false. I have tried to start the process minimized but that has also no
effect. I found several threads discussing this problem but nobody
wrote anything that solves the problem.

With best regards,
Paul Hoepping
Germany.
Click to expand...

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fprq2\fcharset0
MS Sans Serif;}{\f1\fswiss\fcharset0 Arial;}}
{\*\generator Msftedit 5.41.21.2500;}\viewkind4\uc1\pard\f0\fs20 Cheers,\par
\par
johnKn [MS-SDK]\par
\par
\par
\par
-Please do not send email directly to this alias. This alias is for \par
newsgroup purposes only\par
\par
-This posting is provided "AS IS" with no warranties, and confers no
rights.\par
\par
-To provide additional feedback about your community experience please send
\par
e-mail to: (e-mail address removed)\par
\f1\par
}
Click to expand...
 
Hello Paul,

Have you been able to solve this problem?

We're having a similar one.

Best wishes,
Alex.
 
Hi Alex,

no, I have made no progress solving this problem. The best I can do is:

Before starting the new process, I make my own window TopMost. When
start MS Word, the new window appears behind my own application window.
Within the VBA macro I have programmed that MS Word minimizes itself.
So, after a couple a seconds, MS Word disappears.

If you find a solution, please let me know.

With best regards,
Paul Hoepping.
 
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