Qt 4 to Qt 5 Migration

If your project already uses Qt 4, it should be simple to upgrade to Qt 5, right? Whilst Qt 5 was designed to minimize the pain of upgrading from earlier versions, there are still pitfalls that can turn it into a complex task. With strapped resources, limited budgets, and shifting priorities, the right moment to move off a legacy framework can easily be put off. At the same time, the pressure to migrate to a newer framework mounts week by week.