At Qt, we often say it's not just about building software—it's about building something that matters. And when you talk to people who’ve spent years in the craft, you realize it's also about finding…

Qt's model/view framework was one of the big additions to Qt 4 in 2005, replacing the previous item-based list, table, and tree widgets with a more general abstraction. QAbstractItemModel sits at the heart of this framework, and provides a virtual interface…