PyQt4控件失去焦點和得到焦點

#QListView控件多選設置
self.ui.listView.setSelectionMode(QAbstractItemView.ExtendedSelection)

#初始化QListView控件焦點事件

self.ui.listView.installEventFilter(self)

#焦點響應事件

def eventFilter(self, widget, event):

     #失去焦點

    if event.type() == QtCore.QEvent.FocusOut:

        print 'focus out'

        #注意要有返回值  否則會出 TypeError: invalid result type from mouseoverEvent.eventFilter()
        return False

    #得到焦點    if event.type()==QtCore.QEvent.FocusIn:        print 'focus in'        return False    else:        # we don't care about other events        return False