legal or illegal..?

[EbyZero]

If I make an application including qt and use it at my office, does it illegal..?

[JonB]

@EbyZero
In principle, yes, so long as you abide by LGPL requirements. If the question is can you use Qt open source in a commercial environment, the answer is "yes".

[EbyZero]

@JonB
Is it within the range of commercial use to use the application I made directly without selling it to a company or someone?

[JonB]

@EbyZero
Yes, as I said, you can do either, "commercial" is not the issue. Just LGPL requirements.

[EbyZero]

@JonB
Thank you sir!