It’s a hard problem, and I don’t think there is a single solution for a DAW UI. On the one hand there are a lot of UI elements that can be built with traditiona

It’s a hard problem, and I don’t think there is a single solution for a DAW UI. On the one hand there are a lot of UI elements that can be built with traditional widget kits, like the toolbars, panels, even knobs and sliders just custom widgets, you can even build a channel strip that way. On the other hand there are the “contents” or “views” like track view, clips, automation, piano roll, eq etc. I believe those are best to be handled as 2D scene graphs with direct GPU rendering. Even then, each of those DAW specific views presents their own set of challenges which are very involved to address. So I would definitely choose a toolkit that allows both traditional widget trees as well as scene graph style rendering (for eg Egui + wgpu in rust, or Qml in C++). There are other challenges too, I’ve always found synchronizing the ui, the rendering and the audio thread so that everything feels responsive is very hard.