How to scroll without clicking window to focus in vim? -

i have file navigate window (b) , edit window (a). want scan window-b scrolling, while i'm editing file in window-a.

so set mouse=a, , have focus cursor in window-b. wish not focus it, how to?

i don't believe there's way want. if had window-c, how know window scroll !?

just use :h window-move-cursor :h scrolling window in focus, or if you're more comfortable mouse, use instead.