PyQt 没有 button.clicked.connect 功能? [英] PyQt no button.clicked.connect function?

问题描述

我有一个带有 python 3.4 的 PyQt4，并且发生了这个奇怪的错误.每当我尝试调用 btn.clicked.connect() 时，Pycharm 都会抛出此错误:

I've got PyQt4 with a python 3.4 and there is this strange bug occurring. Whenever I try to call btn.clicked.connect(), Pycharm will throw this error:

Cannot find reference "connect" in "function".

例如:

btn = QtGui.QPushButton("Quit", self)
btn.clicked.connect(QtCore.QCoreApplication.instance().quit)

会抛出这个错误.如何?我缺少文件吗?

will throw this error. How? Do I have missing files?

推荐答案

根据 事件和信号PyQt4 - PyQt4 教程 - ZetCode:

PyQt4.5 引入了一种新样式的 API 来处理信号和插槽.

PyQt4.5 introduced a new style API for working with signals and slots.

QtCore.QObject.connect(button, QtCore.SIGNAL('clicked()'),self.onClicked)

这是旧式 API.

button.clicked.connect(self.onClicked)

新样式更符合 Python 标准.

The new style adheres more to the Python standards.

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