Refactor listening keyboard to support switching keyboard modes

libs/enigo/src/win/win_impl.rs

@@ -2,7 +2,7 @@ use self::winapi::ctypes::c_int;
 use self::winapi::shared::{basetsd::ULONG_PTR, minwindef::*, windef::*};
 use self::winapi::um::winbase::*;
 use self::winapi::um::winuser::*;
-use rdev::{simulate, EventType, EventType::*, Key as RdevKey, SimulateError};
+use rdev::{simulate, EventType, Key as RdevKey, SimulateError};
 use winapi;
 
 use crate::win::keycodes::*;

libs/hbb_common/protos/message.proto

@@ -190,6 +190,7 @@ message KeyEvent {
     string seq = 6;
   }
   repeated ControlKey modifiers = 8;
+  uint32 mode = 9;
 }
 
 message CursorData {