Qt with MinGw & Visual Studio

[zhehongwang]

Hello, everyone.
I use visual studio to write the functions of my program into a dynamic linking library, which is not open to the users.
While Qt is used as the gui tool, the codes of which are open to others.
Does this follow the GPL?

[jacek]

Yes, if you simply use VS as an editor, but there are some doubts whether you can use M$ compiler to compile applications licensed under GPL (because of some clauses in M$ EULA).

[bpetty]

I have done exactly the opposite. I have wrapped GPL code in a .so/.dll and dynamically load it with my closed source application. There is an interface between the two so that my closed source app does not include GPL headers. I think it is pretty awesome. You have to open up the code to your DLL, but not your application. And depending on if it is LGPL, only on request. But give credit where credit is due.

[jacek]

I have wrapped GPL code in a .so/.dll and dynamically load it with my closed source application. There is an interface between the two so that my closed source app does not include GPL headers.

In case of LGPL code it's perfectly OK, but I'm not sure about GPL.