You probably already know this, anyway I thing is good news for the qt lazarus port.

Qt 4.5 is going to be released under the LGPL instead of the GPL: http://www.qtsoftware.com/about/news/lgpl-license-option-added-to-qt

Bye

This is just fantastic. It really adds a lot of value to the lazarus-qt interface.

And even more, it becomes a viable substitute for the gtk2 interface in UNIXes. The only problem being that Qt 4.5 would be required, which means that at the moment no distribution supports it out of the box.

But it will not be inside LCLQt until 4.5.1 release (so it's at least 4-6 months from now on).

AFAIK , it will not be replacement for GPL. I got mail from nokia this morning:
" Dear Qt User:

Nokia is pleased to announce that with the release of Qt 4.5 you will be able to use Qt under the Lesser General Public License (LGPL) version 2.1 terms. When released in March 2009, Qt will be made available under three licensing options: Commercial, LGPL and GPL. Prior versions of Qt are not impacted by this announcement."

It says 3 licencing options.

zeljko

Is it possible to create Freeware , non Open-Source, Applications? Or only Open-Source and Commercial?

Best Regards,
Eugen

Why such strict requirement for the version ?

This says to me that as soon as a system updates to Qt 4.6 all is possibly broken ? That seems like a very bad situation, which IMHO should be solved rather quickly, because it severely limits the usefullness of the Qt interface.

The GTK interface works on a relatively wide range of GTK 2 versions, which is a good thing.

Michael.

2009/1/14 Michael Van Canneyt :

Maybe Felipe means Qt 4.5 and higher.

Vincent

En/na zeljko ha escrit:

Ok, my bad, it's not /replacing/ the GPL, but offering you the /additional/ option of using it under the LGPL.
IANAL but I think that the end result is the same: you will be able to use qt4.5 for gpl programs *and* for closed program. Just like gtk.

http://www.gnu.org/licenses/lgpl-2.1.html

Bye

En/na Eugen Bolz ha escrit:

Is it possible to create Freeware , non Open-Source, Applications? Or only Open-Source and Commercial?

IANAL but, yes, it will be possible starting with qt4.5, since the LGPL allows that.
With the current version you have to buy a commercial license if your application is not GPL.

Bye

Okay, i ll wait until this Version is out, and maybe starting then with Qt, thanks :)

Btw, what means IANAL ?

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Felipe Monteiro de Carvalho wrote

This is just fantastic. It really adds a lot of value to the lazarus-qt interface.

Furthermore it may soon be possible to use webkit with lazarus/qt:

First draft test: Lazarus demo program with Qt Webkit Widget.

http://users.telenet.be/Jan.Van.hijfte/qtforfpc/lazarus_webkit.png

Is someone interested in webkit ?

regards,

Den Jean

Den Jean wrote

Is someone interested in webkit ?

What does it do? Shows html pages?

Vincent Snijders wrote

Maybe Felipe means Qt 4.5 and higher.

Yes, that's what I meant.

Felipe Monteiro de Carvalho wrote

What does it do? Shows html pages?

http://en.wikipedia.org/wiki/WebKit

Den Jean wrote

http://en.wikipedia.org/wiki/WebKit

I see. I for one think it would be an excelent addition!

One problem, however, is that all apps would require WebKit, even those that don't use it...