What UI Framework is the Fusion 360 User Interface built on?
The Fusion 360 UI is created using Qt. However, we don't ever plan on directly exposing the Qt capabilities through either the Qt library or the API. For the most part, the API will just tend to expose what's already available in the UI. Although there are cases where we'll provided some additional capabilities. For example, we've begun work on exposing browser customization and will allow choosing some colors for the items that make up a browser node. But even in this case rather than being able to specify any RGB value it will be from a list of pre-defined colors to help keep consistency throughout the product.
