code: def __init__(self, param):
      super().__init__()
      self.param = param
      self.pen = QtGui.QPen(self.param.pen)
      param.sigValueChanging.connect(self.onPenChanging)
  
imports: from ..Qt import QtWidgets, QtGui, QtCore
  from ..functions import mkPen
label_desc: Use image node_id 1 to create a new PenPreviewLabel object from inherited base classes: QtWidgets with example: obj = PenPreviewLabel(param)