[Qt-interest] QProcess and Vista

[Thiago Macieira]

Willy P wrote:
>Tony, you got it.  It was the "."
>
>I think I need it for *nix platforms.
>
>THANK YOU SO MUCH!
>
>-Willy
>
>On Fri, Feb 20, 2009 at 5:16 PM, Tony Rietwyk
>
><tony.rietwyk at rightsoft.com.au> wrote:
>> Willy wrote:
>>> Also,
>>> Here's my QProcess setup:
>>>
>>> _ffmpeg.setProcessChannelMode(QProcess::MergedChannels);
>>> _ffmpeg.setEnvironment( QProcess::systemEnvironment() += "." );

I'm sorry, but this solution makes no sense. How did you come up with it? 
Did you read it somewhere else? A Microsoft KB article maybe?

QProcess::systemEnvironment() returns a QStringList, which is a 
QList<QString>.

That means it adds an environment variable with just a dot. However, the 
environment is supposed to be "name=value" pairs and there's no equal sign 
in the "." entry.

The documentation for CreateProcess on MSDN (http://msdn.microsoft.com/en-
us/library/ms682425.aspx) doesn't indicate that this should happen at all. 

So, to me, this sounds like a Windows bug.

One more thing: for Qt 4.6, QProcess environment will be kept in a QHash, 
meaning that you can't use the trick to append (the order of entries in a 
QHash is not defined).

-- 
Thiago Macieira - thiago.macieira (AT) nokia.com
  Senior Product Manager - Nokia, Qt Software
      Sandakerveien 116, NO-0402 Oslo, Norway

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