PyQt。类型错误

Question

我在 QMainWindow 上设置过滤器:

keyPressFilter = keypressfilter.KeyPressFilter(self)
self.installEventFilter(keyPressFilter)

KeyPressFilter 本身:

class KeyPressFilter(QObject):

    def __init__(self, parent=None):
        super(KeyPressFilter, self).__init__(parent)


    def eventFilter(self, obj, event):
        if event.type() == QEvent.KeyPress:
            print "key press %d" % event.key()
            return True
        else:
            return QObject.eventFilter(obj, event)  <- line NN

我对每个事件类型 QEvent\QPaintEvent\QHoverEvent\etc 都会遇到无尽的错误:

line NN, in eventFilter:
TypeError: QObject.eventFilter(QObject, QEvent): argument 2 has unexpected type 'QPaintEvent'

如何摆脱它？

提前致谢，

谢尔盖

Answer 1

eventFilter() 不是类方法，因此您还需要传递 self :

return QObject.eventFilter(self, obj, event)