def paintEvent(self, event):
        painter = QtGui.QStylePainter(self)
        option = QtGui.QStyleOptionFrame()
        option.initFrom(self)
        painter.drawPrimitive(QtGui.QStyle.PE_PanelTipLabel, option)
        painter.end()

        super(CallTipWidget, self).paintEvent(event)
Test we cannot unsubscribe if we're not subscribed
dataset/ETHPy150Open enthought/pyface/pyface/ui/qt4/console/call_tip_widget.py/CallTipWidget.paintEvent--crossover with--dataset/ETHPy150Open ebu/radiodns-plugit/RadioVisServer/tests.py/MainTests.test_unsubscribe_no_subscribed