pyqt4实现tab界面切换

de  ># -*- coding: utf-8 -*-

from PyQt4.QtGui import *
from PyQt4.QtCore import QString

class ContentWidget(QDialog):
def __init__(self, parent=None):
super(ContentWidget, self).__init__(parent)
self.setStyleSheet("background: black")

class IndexWidget(QDialog):
def __init__(self, parent=None):
super(IndexWidget, self).__init__(parent)
self.setStyleSheet("background: red")

class TabWidget(QTabWidget):
def __init__(self, parent=None):
super(TabWidget, self).__init__(parent)
self.resize(400, 300)
self.mContent = ContentWidget()
self.mIndex = IndexWidget()
self.addTab(self.mContent, u"内容")
self.addTab(self.mIndex, u"索引")

if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
t = TabWidget()
t.show()
app.exec_()