Re: [Opencfd-develop] GUI toolkits

[Anton K. <an...@ku...>]

Sorry, Daniel, you are right about QT. I also just now discussed it in 
some linux forum and found that it is impossiable to use any free 
license on Windows with QT. It looks like both QT and MFC are not our 
choice. We have alternatives like GTK+ and wxWidgets. I do not think 
Tcl/Tk is good for us, what do you think?

Thanks,

Anton

Daniel Labrosse wrote:

> Hi guys.
>
> Please send all emails to ope...@li... no 
> need to include my email on there as well because Im already 
> subscribing to this list so I'm receiving every email twice!
>
> Here is an email response I got from Trolltech regarding licensing.....
> *******************************************************************
>
>> Is the Qt Edition Free Licensing available for MS Windows?
>
>
> No I am afraid not.
>
>> If I write an application using the Linux Qt Edition Free Licensing 
>> can I
>> then compile and distribute my program for MS Windows using the same 
>> licensing model?
>
>
> No this is not possible with Qt/X11 under the GPL license.
>
> I am afriad the only way for you to produce Windows executables is with
> a commercial Windows license, and due to the terms of the Windows
> license, you can not use the Qt/X11 GPL license with the commercial
> Qt/Windows license.
> *******************************************************************
>
>
> On the MFC side of things.
>
> A .net has nothing to do with MFC. WindowsForms API has replaced MFC 
> in the .net framework.
> B .net framework (you pay $$ VS.net) is free to download and distribute
> C. To use MFC, yes you do need a license for Visual C++ 6.0 or greater 
> (VS.net). I
>
> I overlooked that most developers will not have access to Visual C++, 
> so I agree with Anton that an perhaps an alternative would be better.
>
> -Daniel
>
>
> From: Anton Kulchitsky <an...@ku...>
> To: Daniel Labrosse <dan...@ho...>
> CC: ope...@li...
> Subject: Re: [Opencfd-develop] GUI toolkits
> Date: Wed, 25 Aug 2004 09:15:12 -0800
>
> The last thing. Sorry...
>
> MFC is not acceptable for the open source project. Indeed, if QT is 
> GPL'd for Linux (or free windows project, please read the licence!) 
> MFC is never and will be never licensed for free usage. You have to 
> buy .Net toolkit and so on still. That license is expensive.
>
> Finally, MFC and GPL together is nonsense!
>
> Anton
>
> Daniel Labrosse wrote:
>
>> Hi guys,
>>
>> I've thought about using this WxWidgets (formerly WxWindows) GUI 
>> toolkit some time ago but my gut feelings are as follows....
>>
>> 1. Never used it so it▓s a learning curve
>> 2. I'm not sure how stable it is and I don▓t know any commercial 
>> projects written in it.
>> 3. If we agree to use Open Cascade, it has out of the box support MFC 
>> and QT not WxWidgets
>>
>> Personally, I think at this stage platform independence is minor 
>> issue. The sooner we get coding the quicker we will get a prototype 
>> working. I▓ve also looked at using Java for the GUI but I▓m reluctant 
>> to start using it since most of the engine will be coded in C++ and 
>> JNI bridging/JVM incompatibilities will only cause headaches. So C++ 
>> is definitely the way to go!
>>
>> I think we should use either QT or MFC for the GUI. Here are my pros 
>> and cons or both:
>>
>> MFC Pros:
>> Stable toolkit,
>> Used everywhere,
>> Knowledge base: There are hundreds of MFC developers out there so 
>> it▓ll be easy to recruit developers. Also, I▓m currently developing 
>> an MFC application where I work!
>>
>> MFC Cons:
>> You are locked into using windows
>>
>> QT Pros:
>> Stable toolkit
>> Better design than MFC
>> Cross platform
>>
>> QT Cons:
>> Free Licensing is only available to Linux, which effectively locks us 
>> into using Linux and alienates approximately 80% of our potential users.
>>
>>
>> If we get a prototype up and running using MFC then in the future we 
>> can port our code to Linux toolkit. For now, the most important thing 
>> is to get working version up and running! Let me know what you guys 
>> think.
>>
>> -Dano
>>
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