Qt Code: 
  1. from PyQt4 import QtCore, QtGui
  2. import sys
  3.  
  4. class Ui_TabWidget(object):
  5.     def setupUi(self, TabWidget):
  6.         TabWidget.setObjectName("TabWidget")
  7.         TabWidget.resize(400, 300)
  8.         self.tab = QtGui.QWidget()
  9.         self.tab.setObjectName("tab")
  10.         TabWidget.addTab(self.tab, "")
  11.         self.tab1 = QtGui.QWidget()
  12.         self.tab1.setObjectName("tab1")
  13.         TabWidget.addTab(self.tab1, "")
  14.  
  15.         self.retranslateUi(TabWidget)
  16.         QtCore.QMetaObject.connectSlotsByName(TabWidget)
  17.  
  18.     def retranslateUi(self, TabWidget):
  19.         TabWidget.setWindowTitle(QtGui.QApplication.translate("TabWidget", "TabWidget", None, QtGui.QApplication.UnicodeUTF8))
  20.         TabWidget.setTabText(TabWidget.indexOf(self.tab), QtGui.QApplication.translate("TabWidget", "Tab 1", None, QtGui.QApplication.UnicodeUTF8))
  21.         TabWidget.setTabText(TabWidget.indexOf(self.tab1), QtGui.QApplication.translate("TabWidget", "Tab 2", None, QtGui.QApplication.UnicodeUTF8))
  22.  
  23. class Trayicon(QtGui.QSystemTrayIcon):
  24.     def __init__(self,parent=None):
  25.         QtGui.QSystemTrayIcon.__init__(self,parent)
  26.         self.setIcon(QtGui.QIcon("icons/blockattack32.xpm"))
  27.         self.show()
  28.         self.menu=QtGui.QMenu()
  29.         preference=self.menu.addAction("Preferences")
  30.         exit=self.menu.addAction("Exit")
  31.  
  32.         self.setContextMenu(self.menu)
  33.  
  34.         self.TabWidget = QtGui.QTabWidget()
  35.         ui = Ui_TabWidget()
  36.         ui.setupUi(self.TabWidget)
  37.  
  38.         self.connect(exit,QtCore.SIGNAL('triggered()'),self.menuExit)
  39.  
  40.         self.connect(preference,QtCore.SIGNAL('triggered()'),self.showWidget)
  41.  
  42.         #clos=QtGui.QAction(self.TabWidget)
  43.         #self.connect(clos,QtCore.SIGNAL('triggered()'),self.TabWidget,QtCore.SLOT('close()'))
  44.  
  45.     def menuExit(self):
  46.         app.exit()
  47.  
  48.     def showWidget(self):
  49.         self.TabWidget.show()
  50.  
  51.     #def closeEvent(self,event):
  52.         #print('Hello')
  53.  
  54. app = QtGui.QApplication(sys.argv)
  55.  
  56. cd=Trayicon()
  57. cd.show()
  58. sys.exit(app.exec_())
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As you can see it's designed in QtDesigner.. I could not override the close event? Yet another ques. can you tell me the slot for minimize event?? Your help is much awaited.. Thanks..