diffing element qtbase/src/plugins/platforms/cocoa/qnsview.mm
*** ./qtbase/src/plugins/platforms/cocoa/qnsview.mm
--- ./qtbase/src/plugins/platforms/cocoa/qnsview.mm
*************** Q_GLOBAL_STATIC(QCocoaTabletDeviceDataHa
*** 1175,1181 ****
  
      QPointF windowPoint;
      QPointF screenPoint;
!     [self convertFromScreen:[NSEvent mouseLocation] toWindowPoint: &windowPoint andScreenPoint: &screenPoint];
  
      uint deviceId = [theEvent deviceID];
      if (!tabletDeviceDataHash->contains(deviceId)) {
--- 1175,1181 ----
  
      QPointF windowPoint;
      QPointF screenPoint;
! 	[self convertFromScreen:[self screenMousePoint:theEvent] toWindowPoint:&windowPoint andScreenPoint:&screenPoint];
  
      uint deviceId = [theEvent deviceID];
      if (!tabletDeviceDataHash->contains(deviceId)) {