QDBusPendingCallWatcher class provides a convenient way for waiting for asynchronous replies. More…
QDBusPendingCallWatcher provides the
finished() signal that will be emitted when a reply arrives.
It is usually used like the following example:
async = iface.asyncCall("RemoteMethod", value1, value2) watcher = QDBusPendingCallWatcher(async, self) QObject.connect(watcher, SIGNAL(finished(QDBusPendingCallWatcher*)), self, SLOT(callFinishedSlot(QDBusPendingCallWatcher*)))
Note that it is not necessary to keep the original
QDBusPendingCall object around since
QDBusPendingCallWatcher inherits from that class too.
The slot connected to by the above code could be something similar to the following:
def callFinishedSlot(self, call): QByteArray> reply = call if reply.isError(): showError() else: text = reply.argumentAt<0>() data = reply.argumentAt<1>() showReply(text, data) call.deleteLater()
Note the use of
QDBusPendingReply to validate the argument types in the reply. If the reply did not contain exactly two arguments (one string and one
isError() will return true.
- class PySide6.QtDBus.QDBusPendingCallWatcher(call[, parent=None])#
QDBusPendingCallWatcher object to watch for replies on the asynchronous pending call
call and sets this object’s parent to
This signal is emitted when the pending call has finished and its reply is available. The
self parameter is a pointer to the object itself, passed for convenience so that the slot can access the properties and determine the contents of the reply.