from PyQt4 import QtCore,QtGui
import sip
import maya.cmds as cmds
import maya.OpenMayaUI as mui

def getMayaMainWindow(QtGui.QMainWindow):
    accessMainWindow=mui.MQUtil.mainWindow()
    return sip.wrapinstance(long(accessMainWindow),QtCore.QObject)

class Window(QtGui.QMainWindow):
    def __init__(self,parent=getMayaMainWindow(),uniqueHandle='PyQtWindow'):
        QtGui.QMainWindow.__init__(self.parent)
        if cmds.dockControl(uniqueHandle,q=True,exists=True):
             cmds.deleteUI(uniqueHandle)
        self.setWindowTitle('PyQtWindow')
        self.setObjectName(uniqueHandle)
        allowedAreas = ['right', 'left']
        cmds.dockControl(uniqueHandle,w=600,label="name of app", area='left', content=uniqueHandle, allowedArea=allowedAreas)
        self.resize(400,200)
        self.setWindow()

   def setWindow(self):
        #add PyQt window congtrols here in inherited class
         pass