code: def checkChanged(self, state):
      check = QtCore.QObject.sender(self)
      # self.emit(QtCore.SIGNAL('stateChanged'), check.row, check.col, state)
      self.sigStateChanged.emit(check.row, check.col, state)
  
file_path: pyqtgraph/pyqtgraph/widgets/CheckTable.py
imports: from ..Qt import QtCore, QtWidgets
  from .None import VerticalLabel
label_desc: Use image node_id 5 for calling the CheckTable obj's underlying member method code with example usage: obj.checkChanged(state) without return types