Stavros Filippidis wrote:

@*Denis Kormalev*: Just to clarify, I am NOT referring to the source code of the application, but to the source code of the Qt libraries (QtCore4.dll, QtGui4.dll, etc). In any case, I am not a lawyer, I am just have these questioned unanswered. :)

Yeah, I understood that question is about Qt sources. Anyway when you use Qt with LGPL license you need to provide link to Qt. And everybody who wants can take sources from Qt website.

(oooh, second page, ive never seen that before, very cool)

I think Qt could do more to explain its licences simply, as the previously linked page tried to do… I think there could be a further simplification of it…

We agree. However, licensing (and law in general) unfortunately isn’t easy to simplify while giving correct information…

@Alexandra: In my opinion, it would be interesting if you would consider re-opening comments at

http://blog.qt.nokia.com/2009/11/30/qt-making-the-right-licensing-decision/

so that someone from Qt/Nokia’s legal department could clarify additional questions that we could post there. ;)

Stavros Filippidis, good idea. Also may be good will be to make FAQ about licensing issues. Alexandra Leisse, what do you (and other Trolls) think about it?

Alexandra Leisse wrote:

We agree. However, licensing (and law in general) unfortunately isn't easy to simplify while giving correct information…

What about some simple use cases, specifying when and why you should use each licence… Although I suppose if it was that simple it would already exist…

A tricky topic….

I just talked to our lawyer and she has already planned for a follow-up to mentioned blog [blog.qt.nokia.com]. To make it easier for her to figure out what is still unclear and would be good to address, I have started a wiki page [developer.qt.nokia.com].

Please, add your questions/suggestions there and we do our best to provide you with answers.

Alexandra Leisse wrote:

I just talked to our lawyer and she has already planned for a follow-up to mentioned blog [blog.qt.nokia.com]. To make it easier for her to figure out what is still unclear and would be good to address, I have started a wiki page [developer.qt.nokia.com].

Please, add your questions/suggestions there and we do our best to provide you with answers.

I have just created this:

http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario

But maybe I did something wrong and I do not see it at the Wiki! Could a TROLL please correct this? :)

EDIT:

I just noticed that I was supposed to EDIT the

http://developer.qt.nokia.com/wiki/LicensingQuestions

and NOT create a new wiki-page! So … now I dit it (correctly

Could a TROLL (please!) delete the

http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario

which I shouln’t have created the first place?

Stavros Filippidis wrote:

Could a TROLL (please!) delete the
http://developer.qt.nokia.com/wiki/Question_Closed-source_application_scenario
which I shouln't have created the first place?

Done. Thanks for adding this scenario!

Yes, that scenario seems to cover the area in the middle I am more confused on… Interesting to see the result – thanks Stavros.

When are the answers on the referenced wiki page going to be answered, or have they already and I’m just not finding them?

jeremy_c wrote:

When are the answers on the referenced wiki page going to be answered, or have they already and I'm just not finding them?

Currently, Cristy – our lawyer – is working on her presentation for our Developer Days. The wiki is basis for that, among other things. It’s supposed to help her understand what our users a struggling with.

After the event in San Francisco we will make her presentation available publicly.

I hope that helps.

Alexandra Leisse wrote:

jeremy_c wrote:

When are the answers on the referenced wiki page going to be answered, or have they already and I'm just not finding them?

Currently, Cristy – our lawyer – is working on her presentation for our Developer Days. The wiki is basis for that, among other things. It’s supposed to help her understand what our users a struggling with.

After the event in San Francisco we will make her presentation available publicly.

I hope that helps.

Do we have anything new on the licencing follow-up with Cristy? :)

Stavros Filippidis wrote:

Do we have anything new on the licencing follow-up with Cristy? :)

The video is available here [qt.nokia.com]

Esdras Beleza wrote:

Hi,

I need to prepare a lecture for my colleagues about Qt Development, and one of the topics is licensing. But it’s a very controversial topic, since the three Qt licenses make its licensing hard to understand. I tried to read Qt Licensing [qt.nokia.com]) a few times, but I’m still confused.

So, I’ll start with a some questions:

1) Can I develop and deploy closed-sourced commercial applications without buying a commercial license of Qt?

2) A more specific question, since the answer may be different: can I develop and deploy closed-sourced commercial applications without buying a commercial license of Qt, distributing it with the original Qt libraries, without any changes on it?

My personal projects are free and open sourced, but I need these questions answered so I could convince (or not…) some coworkers to use Qt on their commercial projects.

If you are preparing lecture and need the material regarding it then Qt in Education [qt.nokia.com] will help you.

Check this presentation [slideshare.net] also.

About licensing ,I think LGPL will not make any problem for you, As obvious you can not distribute that one.