I looked into this for an audio app, and it looked really cool. Then I contacted him to find out what contingencies were in place because of the truck number of 1 (!!). I asked him if he had any business partner, or perhaps a dead man's agreement in place in the license by which if the company folded or he left it would revert to open source. Not only does he not, but he was a jerk about it, completely dismissive of it as a valid concern. No way would I put years of work into a project on a platform that might become stagnant because of his lack of foresight or understanding there. So I just used QT and other audio only toolkits. Pity, it's really neat looking.
Well, that's the beauty of open-source... I try to be hit as few trucks as possible, but it certainly wouldn't mean the end of the project, just perhaps a slight drop in code-quality :)
I remember you getting in touch and asking about this because I think you're the only person who ever asked me about the truck-number. Slightly surprising, really - I've sold licenses to all kinds of huge mega-corporations who I would have expected to worry about such things, but apparently not. Just you!
..actually, I should mention that although most of the library is still GPL, the core module is now under a permissive ISC license. So if you're doing non-GUI or audio stuff, you can use many of the core classes for free.
Jules I am a real fan of your work, you are an inspiration - thanks for your response! Reading iain's comment again - I think he knows it is GPL already but for commercial users he's concerned that they would have to GPL their code to get updates if something unfortunate were to happen.
