--- Revision None
+++ Revision 643239633436
@@ -0,0 +1,25 @@
+import sys
+from PySide import QtCore, QtGui
+
+class Test(QtGui.QMainWindow):
+    def __init__(self):
+        QtGui.QMainWindow.__init__(self)
+
+        self.button = QtGui.QPushButton(self)
+        self.button.setText(QtCore.QString("Push me"))  
+        self.setCentralWidget(self.button)
+
+        self.secondWindow = QtGui.QMainWindow(self)
+        self.secondWindow.setParent(self)
+
+        self.connect(self.button, QtCore.SIGNAL("clicked()"), self.openSecondWindow)
+
+    def openSecondWindow(self):
+        print "Activate second window"
+        self.secondWindow.show()
+
+if __name__ == '__main__':
+    app = QtGui.QApplication(sys.argv)
+    test = Test()
+    test.show()
+    sys.exit(app.exec_())