title: Do pyqt4 tooltips now work on Mac OS?
body: <p>I'm developing a cross-platform software, I wanted to write code that is platform independent. Small issue, I've seen a lot of people reporting that tooltips using pyqt4 do not work on Mac. Is this resolved now?</p>
  
  <pre><code>from PyQt4 import QtCore, QtGui
  import sys
  
  app = QtGui.QApplication(sys.argv)
  QtGui.qApp = app
  
  pointListBox = QtGui.QTreeWidget()
  
  header=QtGui.QTreeWidgetItem(["Tree","First","secondo"])
  pointListBox.setHeaderItem(header)
  
  root = QtGui.QTreeWidgetItem(pointListBox, ["root"])
  A = QtGui.QTreeWidgetItem(root, ["A"])
  barA = QtGui.QTreeWidgetItem(A, ["bar", "i", "ii"])
  bazA = QtGui.QTreeWidgetItem(A, ["baz", "a", "b"])
  barA.setToolTip(0,"tooltip working")
  bazA.setToolTip(0,"tooltip working")
  
  
  pointListBox.show()
  sys.exit(app.exec_())
  </code></pre>
  
  <p>The tooltips in the above program work on Ubuntu and Windows. Does it on Mac OS?</p>