[Qt-interest] LGPL - Am I using the right Qt version?

Paolo Zavarise public at paolo.zavarise.name
Fri Apr 10 11:20:04 CEST 2009


I want to develop a closed source Qt Windows application,
without commercial qt license, using Qt LGPL option.

I installed qt-win-opensource-4.5.0-mingw.exe.

qtsoftware site says "You can choose between LGPL and GPL during the 
installation process"...

Installer asked me only to agree to LGPL 2.1 licence (no other choices).

But qtAbout in my test application shows me
"This program uses Qt Open Source Edition version 4.5.0. Qt Open Source 
Edition is intended for the development of Open Source applications.
You need a commercial QT license for development of proprietary (closed 
source) applications".

That's not true. I understand I don't need commercial QT licence for 
development of proprietary closed source applications, because of QT 
LGPL licence.

Is this a bug (qtAbout not updated: it is the message of previous 
version except version number) ?

Am I using the right Qt version?

Thanks
Paolo





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