Quote Originally Posted by ubernick View Post
If I were to develop with Qt (but not change and re-use Qt's source code), can I deploy a proprietary application (with a price tag) and not make public its source code?
Yes.

More specifically, I understand you need to dynamically like Qt's libraries in your deployed - which I assume is the normal use of includes.

If I were to deploy an application on OS X using the macdeployqt, whereby it automatically bundles the Qt libraries within the .app package/folder, is that still dynamic linking of the libraries and therefore within the LGPL license requirements (assuming I haven't used other external code that would be outside the LGPL)?
It's no problem. You application is still dynamically linked. It's just like you would make a zip package.