code: def mouseMoveEvent(self, ev):
      if not self.mouseMoved:
          lpos = (
              ev.position()
              if hasattr(ev, "position")
              else ev.localPos()
          )
          self.mouseMoved = (
              lpos - self.pressPos
          ).manhattanLength() > QtWidgets.QApplication.startDragDistance()
  
      if (
          self.mouseMoved
          and ev.buttons() == QtCore.Qt.MouseButton.LeftButton
      ):
          self.dock.startDrag()
      ev.accept()
  
imports: import warnings
  from ..Qt import QtCore, QtGui, QtWidgets
  from ..widgets.VerticalLabel import VerticalLabel
  from .DockDrop import DockDrop
label_desc: Use image node_id 7 for calling the DockLabel obj's underlying member method code with example usage: obj.mouseMoveEvent(ev) without return types