title: How to make PyQt window state to maximised in pyqt
body: <p>I am using PyQt4 for GUI in my application.</p>
  
  <p>I want to know how can make my window maximized by default.</p>
  
  <p>I goggled but did not found an alternate.</p>
  
  <p>I tried using below code, but its not for maximized instead it resizes the window to desktop screen size.</p>
  
  <p>But i need the effect which we will see when we press the maximize button wt right side of the window title bar.</p>
  
  <pre><code>screen = QtGui.QDesktopWidget().screenGeometry()
  self.setGeometry(0, 0, screen.width(), screen.height())  
  </code></pre>