Q. How do I terminate a browser using a pid?

hWnd ||= Watir::IE::Process.process_id_from_hwnd @b.hwnd
pid=" " * 32
thread=Win32API.new("user32", "GetWindowThreadProcessId", 'IP', 'I').Call(hWnd,pid)
puts pid.unpack("L")[0]
right_to_terminate_process = 1
handle = Win32API.new('kernel32.dll', 'OpenProcess', 'lil', 'l').
call(right_to_terminate_process, 0, hWnd)
Win32API.new('kernel32.dll', 'TerminateProcess', 'll', 'l').call(handle, 0)