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Can I develop a program with Qt in C++ where the user can donate some money if he wants? There will be a little donate button somewhere in the window.
Under which license do I have to publish my program, when I’m using Qt and the user has the opportunity to donate?
A donate program isn’t a commercial program, right? So I don’t have to buy a Qt License.
Since Qt is on LGPL license you can make even a commercial, closed source software with it. The only restriction is that if you change something in Qt library you have to publish those changes