<p>像这样:</p>
<pre><code>from PyQt4 import QtGui
app = QtGui.QApplication([])
w = QtGui.QMainWindow()
menu = QtGui.QMenu("menu", w)
menu.addAction(QtGui.QAction('50%', menu, checkable=True))
menu.addAction(QtGui.QAction('100%', menu, checkable=True))
menu.addAction(QtGui.QAction('200%', menu, checkable=True))
menu.addAction(QtGui.QAction('300%', menu, checkable=True))
menu.addAction(QtGui.QAction('400%', menu, checkable=True))
w.menuBar().addMenu(menu)
w.show()
app.exec_()
</code></pre>
<p>或使用单选按钮:</p>
<pre><code>from PyQt4 import QtGui
app = QtGui.QApplication([])
w = QtGui.QMainWindow()
menu = QtGui.QMenu("menu", w)
ag = QtGui.QActionGroup(w, exclusive=True)
a = ag.addAction(QtGui.QAction('50%', w, checkable=True))
menu.addAction(a)
a = ag.addAction(QtGui.QAction('100%', w, checkable=True))
menu.addAction(a)
a = ag.addAction(QtGui.QAction('200%', w, checkable=True))
menu.addAction(a)
a = ag.addAction(QtGui.QAction('300%', w, checkable=True))
menu.addAction(a)
a = ag.addAction(QtGui.QAction('400%', w, checkable=True))
menu.addAction(a)
w.menuBar().addMenu(menu)
w.show()
app.exec_()
</code></pre>