class_docstr: **Bases:** :class:`UIGraphicsItem <pyqtgraph.UIGraphicsItem>`
  
  Displays a rectangular grid of lines indicating major divisions within a coordinate system.
  Automatically determines what divisions to use.
class_docstr_tok: ["*","*","Bases",":","*","*",":","class",":","`","UIGraphicsItem","<","pyqtgraph.UIGraphicsItem",">","`","Displays","a","rectangular","grid","of","lines","indicating","major","divisions","within","a","coordinate","system",".","Automatically","determines","what","divisions","to","use","."]
code: def viewRangeChanged(self):
      UIGraphicsItem.viewRangeChanged(self)
      self.picture = None
  
file_path: pyqtgraph/pyqtgraph/graphicsItems/GridItem.py
imports: import numpy
  from ..None import functions
  from ..None import getConfigOption
  from ..Point import Point
  from ..Qt import QtCore, QtGui
  from .UIGraphicsItem import UIGraphicsItem
label_desc: Use image node_id 5 for calling the GridItem obj's underlying member method code with example usage: obj.viewRangeChanged() without return types