擅长:python、mysql、java
<p>多重继承有效,但是基类必须以正确的顺序调用(即,<code>DocumentWidget(QLabel, QWidget)</code>而不是{<cd1>})。在</p>
<p>全部:</p>
<pre><code>from PyQt4.QtCore import *
from PyQt4.QtGui import *
class DocumentWidget(QLabel, QWidget):
def __init__(self, parent=None):
super(DocumentWidget, self).__init__()
self.currentPage = -1
self.setAlignment(Qt.AlignCenter)
</code></pre>