protected override void Execute(CodeActivityContext context)
{
var h = WindowHandle.Get(context);
if (h == null)
{
throw new ArgumentException(Resource.WindowHandleArgumentValidationError);
}
var value = Bridge.SetState(Bridge.ToWin32Handle(h), 0, 0);
KeyboardLayout.Set(context, (value >> 16) & 0xffff);
KeyboardOpenClose.Set(context, ((value >> 15) & 1) == 1);
ConversionMode.Set(context, (value >> 0) & 0x7fff);
}