Python and Qt seem to<BR>fit the bill (especially since Qt is now GPL).<BR><BR>I had considered going down the mono path but I think the learning curve is going to be too steep due to the fact ...

OpenBossa and Nokia have launched a new project called PySide to build high-quality Python bindings for the Qt toolkit. PySide will be made available under the permissive Lesser General Public ...

You might not realize it, but most of us are using Qt-powered products every day ... This means programming languages like Python, .Net, Rust, and Swift - as well as Kotlin/Java will be integrated.