MattF wrote:

You could always e-mail the FSF to double check, if you wanted to make certain.

Speaking of a higher authority: http://wordpress.org/development/2009/0 … e-gpl-too/

That part is not in any doubt. The functionality of the base system still exists without those GPL files though, (in this case), hence the differing licences shouldn't be problematic.

You could always e-mail the FSF to double check, if you wanted to make certain.

Speaking of a higher authority: http://wordpress.org/development/2009/0 … e-gpl-too/

Of course my program works without CSS files, but the UI is ugly

I can't see any reason why the two licences can't happily co-exist in your specific situation. Just make sure all copyright info stays intact on the PunBB files and you should be fine.

You could always e-mail the FSF to double check, if you wanted to make certain. They are usually very helpful in answering questions which aren't specifically answered in their FAQ. Their answers can be somewhat vague in meaning, however. Interpretation of their rules can be rather broad, even when you get a specific response from them.

It appears your situation falls under the former.

It seems i only need to public these CSS files and modified (CSS) files under the same license with PunBB (GPL), but other code in my program is not required.

And if i release them alone, and then downloading and use it in my program is allowed, right?

It seems i only need to public these CSS files and modified (CSS) files under the same license with PunBB (GPL), but other code in my program is not required.

Yes, you are right. You can use Oxygen style as you posted above.

Maybe i can't use them at all?

I can't ship punbb files in my program, so i must distribute my program alone without punbb files. But i can modify punbb files and release them unde GPL, and tell my program users downloading modified files and use them.

Am i right?

From my understanding of the license, as long as you distribute or provide the source for download, closed and open source code may reside together.

Slavok wrote:

No, it is not. If you copy a piece of code of a product published under GPL, you must publish your software under GPL as well.

Please refer to #9.

It seems i only need to public these CSS files and modified (CSS) files under the same license with PunBB (GPL), but other code in my program is not required.

I can't ship punbb files in my program, so i must distribute my program alone without punbb files.
But i can modify punbb files and release them unde GPL, and tell my program users downloading modified files and use them.

Am i right?

No, it is not. If you copy a piece of code of a product published under GPL, you must publish your software under GPL as well.

Please refer to #9.

I like the default PunBB style (Oxyen), but is it allowed to use or ship Oxyen CSS files in a web-based close-source and commercial software? it's a web-based mail server management tool.

Thanks very much.