in reply to Re^4: Question on Win32::Process
in thread Question on Win32::Process

Indeed interesting. The version of MSDN I'm using is dated March 2005. I notice that the online version is December 2005 so I guess that is authoritive. But I can't see how they can have changed the behaviour for older versions of the OS, or even unpatched current versions. There is no indication of a change in behaviour in the documentation so unless it never worked ...

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Re^6: Question on Win32::Process
by BrowserUk (Patriarch) on Dec 29, 2005 at 10:59 UTC

    Stranger and stranger. I found this on the web somewhere. 

    when you try to create a console process with CreateNoWindows= true it
+ 
will work fine on windows NT/2k/xp but on windows 9x/ME the console 
window will pop up anyway.

Quote from MSDN (Article "Process creation flags") 

CREATE_NO_WINDOW: 
The process is a console application that is run without a console win
+dow. 
This flag is valid only when starting a console application. 
This flag cannot be used with MS-DOS-based applications. 
Windows Me/98/95: This value is not supported. 

I don't think this "bug" will be fixed. 
This flag simply isn't supported by Win95/98/Me.

    [download]

    Whether they've decided to stop mentioning it in the docs, or the ability has been removed in one of the latest set of updates I don't know. Maybe they are trying to make it harder for people to create silent keyloggers and the like?

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[reply]
[d/l]

      That is the text of the table entry in the article that I was referencing. My first thought was "oh, they've taken it out for Vista (64 bit support". But if that were the case I'd expect the NT, 2000 and XP behaviour to be documented still. If MS wanted to depricate the flag surely they would document it to that effect. Pretty sure I've used this flag with XP to suppress any UI for installer helper apps.

      There are plenty of good uses for the feature (Tk apps for a start) and there are plenty of other ways of managing a key logger so I'd be surprised if that were the reason for a change. Dropping console support entirely in the future might be a reason, but then the change would be documented.

      My best guess at this point is that it is a documentation bug in the Dec. 2005 version.

      DWIM is Perl's answer to Gödel
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