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January 23, 2018 21:08
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#!/usr/bin/env python | |
############################################################################# | |
## | |
## Copyright (C) 2013 Riverbank Computing Limited. | |
## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). | |
## All rights reserved. | |
## | |
## This file is part of the examples of PyQt. | |
## | |
## $QT_BEGIN_LICENSE:BSD$ | |
## 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 Nokia Corporation and its Subsidiary(-ies) 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." | |
## $QT_END_LICENSE$ | |
## | |
############################################################################# | |
import sys | |
from PyQt5.QtCore import (pyqtProperty, Q_CLASSINFO, QCoreApplication, QObject, | |
QUrl) | |
from PyQt5.QtQml import (qmlRegisterType, QQmlComponent, QQmlEngine, | |
QQmlListProperty) | |
break_it = True | |
QML = b''' | |
import People 1.0 | |
BirthdayParty { | |
host: Boy {} | |
} | |
''' | |
class Person(QObject): | |
pass | |
class Boy(Person): | |
pass | |
if break_it: | |
property_type = Person | |
else: | |
property_type = Boy | |
class BirthdayParty(QObject): | |
def __init__(self, parent=None): | |
super(BirthdayParty, self).__init__(parent) | |
self._host = None | |
@pyqtProperty(property_type) | |
def host(self): | |
return self._host | |
@host.setter | |
def host(self, host): | |
self._host = host | |
app = QCoreApplication(sys.argv) | |
qmlRegisterType(BirthdayParty, "People", 1, 0, "BirthdayParty") | |
qmlRegisterType(Person, "People", 1, 0, "Person") | |
qmlRegisterType(Boy, "People", 1, 0, "Boy") | |
engine = QQmlEngine() | |
component = QQmlComponent(engine) | |
component.setData(QML, QUrl()) | |
party = component.create() | |
for e in component.errors(): | |
print("Error:", e.toString()); |
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