class_docstr: Instances of this class are delivered to items in a :class:`GraphicsScene <pyqtgraph.GraphicsScene>` via their mouseClickEvent() method when the item is clicked. 
docstr: Return True if this is a double-click.
docstr_tok: ["Return","True","if","this","is","a","double-click","."]
code: def double(self):
      """Return True if this is a double-click."""
      return self._double
  
imports: import weakref
  from time import perf_counter
  from ..Point import Point
  from ..Qt import QtCore
label_desc: Use image node_id 9 for calling the MouseClickEvent obj's underlying member method code with example usage: obj.double() and returns: self