Here’s an excerpt from the ahk (Autohotkey) script I use for Cubase which
enables using the Windows Logo key as a modifier, by having ahk send various keystrokes upon hitting Win+<some key> (the # symbol represents the Windows key) I use keycodes that don’t have an equivalent key on my keyboard, but which Cubase can use.
#SingleInstance Force
#1::Send,{U+00B9} ; ¹
#2::Send,{U+00B2} ; ²
#3::Send,{U+00B3} ; ³
#4::Send,{U+20AC} ; €
#q::Send,{U+024B} ; ɋ
#a::Send,{U+00C0} ; À
#z::Send,{U+0179} ; Ź
#w::Send,{U+1E80} ; Ẁ
#s::Send,{U+015A} ; Ś
#x::Send,{U+02E3} ; ˣ
#e::Send,{U+00CB} ; Ë
#d::Send,{U+010E} ; Ď
#c::Send,{U+0106} ; Ć
#r::Send,{U+0154} ; Ŕ
#f::Send,{U+0191} ; Ƒ
#v::Send,{U+01B2} ; Ʋ
#t::Send,{U+0162} ; Ţ
#g::Send,{U+011C} ; Ĝ
#b::Send,{U+0181} ; Ɓ
#y::Send,{U+01B3} ; Ƴ
#h::Send,{U+0125} ; ĥ
#n::Send,{U+0148} ; ň
#u::Send,{U+016D} ; ŭ
#j::Send,{U+0135} ; ĵ
#m::Send,{U+019C} ; ę
#i::Send,{U+012D} ; ĭ
#k::Send,{U+0137} ; ķ
#o::Send,{U+0298} ; ʘ
#l::Send,{U+013D} ; Ľ