public IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam)
{
bool fEatKeyStroke = false;
var wparamTyped = wParam.ToInt32();
if (Enum.IsDefined(typeof(KeyboardState), wparamTyped))
{
object o = Marshal.PtrToStructure(lParam, typeof(LowLevelKeyboardInputEvent));
LowLevelKeyboardInputEvent p = (LowLevelKeyboardInputEvent)o;
var eventArguments = new GlobalKeyboardHookEventArgs(p, (KeyboardState)wparamTyped);
EventHandler <GlobalKeyboardHookEventArgs> handler = KeyboardPressed;
handler?.Invoke(this, eventArguments);
fEatKeyStroke = eventArguments.Handled;
}
return(fEatKeyStroke ? (IntPtr)1 : CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
private void KeyPressed(object sender, GlobalKeyboardHookEventArgs e)
{
var pressedKey = (Keys)e.KeyboardData.VirtualCode;
if (pressedKey == Keys.LShiftKey)
{
_shiftPressed = e.KeyboardState == KeyboardState.KeyDown;
return;
}
if (e.KeyboardState != KeyboardState.KeyDown)
{
return;
}
char resultSymbol;
if (pressedKey.TryToChar(_shiftPressed, out resultSymbol))
{
AppendBuffer(resultSymbol, Strategy);
NewSymbol?.Invoke(this, new NewSymbolEventArgs(resultSymbol));
}
CheckBuffer(Strategy, pressedKey);
}