At the moment it looks like supporting dashboard menus is impossible in UE4 , which is a real pity. It was trivial in Unity.
You have to pass a texture to OpenVR which you get from a stereo overlay, which is bound to a widget component, which contains your widget, which has to be attached to a pawn.
So I cannot just create an instance of the widget from c++ and add it as required.
If I add it to the player, then it will be active all the time, not good.
At the moment it will always be visible as well, though I think I can get around that by making the widget have a transparent material and playing with the overlays transform, not really a valid solution though.
Has anyone managed to create a working dashboard overlay?