#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PySide  import QtCore, QtGui

class WSC (QtGui.QGraphicsScene):
    def __init__(self, parent=None):
        super(WSC, self).__init__(parent)

class WSNode (QtGui.QGraphicsSimpleTextItem):
  def showNode(self):
    self.setFlag(QtGui.QGraphicsItem.ItemSendsGeometryChanges,True)
    self.setPos(27.4, 76.1)
    self.setFlag(QtGui.QGraphicsItem.ItemIsSelectable)
    self.setText('txt')
    self.setFlag(QtGui.QGraphicsItem.ItemIsMovable, True) 
    
    self.display.addItem(self)

  def itemChange(self, change, value):
    if change == QtGui.QGraphicsItem.ItemPositionChange:
      print value.x()
    return super(WSNode,self).itemChange(change, value)

app = QtGui.QApplication(sys.argv)
sc = QtGui.QGraphicsScene()
#sc = WSC()

view = QtGui.QGraphicsView(sc)
view.show()

nn=WSNode()
nn.display=sc
nn.showNode()

sys.exit(app.exec_())