[Interest] qt.conf

Graham Labdon Graham.Labdon at avalonsciences.com
Tue Mar 20 11:49:58 CET 2012

Thanks for your reply
Does this imply that qt.conf cannot be used with windows?
Is this situation the same on Linux?
What CAN qt.conf be used for?


From: Tony Rietwyk [mailto:tony at rightsoft.com.au]
Sent: 20 March 2012 10:40
To: Graham Labdon
Subject: RE: [Interest] qt.conf

Hi Graham,

Windows doesn't know anything about the qt.conf file.  So the Qt code itself has to be running before it can read the file.  When you install on another machine, you can add the lib path to the PATH variable, or copy the lib dll's into the exe's folder, or use a script file to setup the environment and call your exe, or.....

Hope that helps,


Sent: Tuesday, 20 March 2012 8:44 PM

I am trying to use the qt.conf functionality
In my qt.conf file I have the following

prefix = "C:\\Program Files (x86)\\AcquisitionSoftware\\Qt<file:///\\AcquisitionSoftware\Qt>"

Running the app through the debugger I can use QLibraryInfo to verify that Qt is recognising the presence of the conf file

QLibraryInfo::location(QLibraryInfo::LibrariesPath) returns C:/Program Files (x86)/AcquisitionSoftware/Qt/lib

However running the application on a machine without Qt installed fails as it cannot locate QCore4.dll

Note that on the target machine the folder C:/Program Files (x86)/AcquisitionSoftware/Qt/lib exists and contains QCore4.dll

Is this a known problem or am I doing something incorrectly?

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