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#############################################################################
##
## Copyright (C) 2021 The Qt Company Ltd.
## Contact: https://www.qt.io/licensing/
##
## This file is part of the Qt for Python examples of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of The Qt Company Ltd nor the names of its
## contributors may be used to endorse or promote products derived
## from this software without specific prior written permission.
##
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
## $QT_END_LICENSE$
##
#############################################################################
"""PySide6 port of the QtDBus pingpong example from Qt v6.x (pong server)"""
import sys
from PySide6.QtCore import QCoreApplication, QObject, Slot
from PySide6.QtDBus import QDBusConnection
SERVICE_NAME = "org.example.QtDBus.PingExample"
class Pong(QObject):
def __init__(self, parent=None):
super().__init__(parent)
@Slot(str, result=str)
def ping(self, arg):
print(f'pong: Received ping({arg})')
qApp.quit()
return f'ping("{arg}") got called'
if __name__ == "__main__":
app = QCoreApplication()
session_bus = QDBusConnection.sessionBus()
if not session_bus.isConnected():
print("Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`\n")
sys.exit(-1)
if not session_bus.registerService(SERVICE_NAME):
print(session_bus.lastError().message())
sys.exit(-1)
pong = Pong()
session_bus.registerObject('/', pong, QDBusConnection.ExportAllSlots)
print(f'pong: {SERVICE_NAME} running. Now start ping.py')
exit_code = app.exec()
print('pong: terminating')
sys.exit(exit_code)
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