Thanks very much for the information and links; the point you raised is very important/interesting to me in that Qt is already a "fast moving target" and for CopperSpice to get close it will need continuous work and effort it's difficult to see it keeping up. Also the growth of Qt has been amazing - I started using Qt about 5 years ago and it felt relativity unknown (I saw very few, or no, jobs requiring Qt), but now it seems to be everywhere. Even in forums like stack overflow the "qt" tag is about 10% as popular as "c++" tag (which is by far the most popular), so again... hard to see CopperSpice getting the same exposure, unless it offers something better then Qt... I am not sure that the removal of Moc is enough for me to want to move away from the Qt community/feature-set anytime soon.