You can try the FindChildByID(from the JS-extension) function on GetMainHWND().
Just iterate through the first ten thousand ids and try to find the hwnd that has the title "trackview". Works on Windows.
This id can then be used to get the ArrangeviewHwnd on all platforms, which isn't possible vy title.
Or you use my API, which has GetArrangeHwnd for that.
I'm currently documenting the available id's for FindChildByID, so these things will be easier in the future.
Haven't got my notes right here, or I could give you the right ID...
Edit: this is the function from my API
https://mespotin.uber.space/Ultrasch...iewAndTimeLine