这个class有什么问题？ ( QDBusAbstractAdaptor )

Question

我有以下 class:

    class DBusAdaptor(QDBusAbstractAdaptor):

        Q_CLASSINFO("D-Bus Interface", 'org.kde.kdialog.ProgressDialog')

        Q_CLASSINFO("D-Bus Introspection", '''<interface name="org.kde.kdialog.ProgressDialog">
            <property name="maximum" type="i" access="readwrite"/>
            <method name="close"/>
            </interface>''')

        def __init__(self, parent):
            super(DBusAdaptor, self).__init__(parent)
            self.parent = parent

        @pyqtSlot()
        def close(self):
            self.parent.close()

        @pyqtProperty(int)
        def maximum(self): # BUG: No such method 'maximum' in any interface at object path '/ProgressDialog' (signature '') 
            return self.parent.progressBar.maximum()

        @maximum.setter
        def maximum(self, maximum):
            self.parent.progressBar.setMaximum(maximum)

失败并出现以下错误：

$ qdbus org.kde.kdialog-15070 /ProgressDialog maximum
Error: org.freedesktop.DBus.Error.UnknownMethod
No such method 'maximum' in any interface at object path '/ProgressDialog' (signature '')

setter 运行良好，所以我不知道这里有什么问题。

Answer 1

我对适配器有误解：这里有一个例子帮助我理解它是如何工作的：

http://permalink.gmane.org/gmane.comp.python.pyqt-pykde/24405

这个class有什么问题？ ( QDBusAbstractAdaptor )

What is wrong with this class? ( QDBusAbstractAdaptor )

python-3.x

pyqt5

qdbus