diff -Naur a/src/platformsupport/input/tslib/qtslib.cpp b/src/platformsupport/input/tslib/qtslib.cpp
  --- a/src/platformsupport/input/tslib/qtslib.cpp	2017-03-09 13:56:15.106194306 +0900
  +++ b/src/platformsupport/input/tslib/qtslib.cpp	2017-03-09 13:55:49.937693339 +0900
  @@ -121,12 +121,16 @@
               if (dx*dx <= 4 && dy*dy <= 4 && pressed == m_pressed)
                   continue;
           }
  -        QPoint pos(x, y);
  +

  +        int xn = 1080 - y;

  +        int yn = x;
  +
  +        QPoint pos(xn, yn);
   
           QWindowSystemInterface::handleMouseEvent(0, pos, pos, pressed ? Qt::LeftButton : Qt::NoButton);
   
  -        m_x = x;
  -        m_y = y;
  +        m_x = xn;
  +        m_y = yn;
           m_pressed = pressed;
       }
   }