I'm working on a QT mock-up which we can use for screenshots for the proposal for DH2011, and making use of the opportunity to hack around with various options for handling the graphics in the interface of the actual application. What I learned today, after many hours' work, is not to trust QT Designer at all. I could find no way to make a layout with QT Designer that would actually expand when the window containing it expanded. I spent a long time testing all the options, and nothing at all worked. As soon as I built the layout manually in the source file, it worked perfectly. In future, I think I'll use QT Designer for the basic setup of a window (menu, toolbar, status bar), but then everything inside the centralWidget I'll do manually. Much simpler.