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#############################################################################
##
## Copyright (C) 2020 The Qt Company Ltd.
## Contact: http://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."
##
## $QT_END_LICENSE$
##
#############################################################################
"""QUiLoader example, showing how to dynamically load a Qt Designer form
from a UI file."""
from argparse import ArgumentParser, RawTextHelpFormatter
import sys
from PySide6.QtCore import Qt, QFile, QIODevice
from PySide6.QtWidgets import QApplication, QWidget
from PySide6.QtUiTools import QUiLoader
if __name__ == '__main__':
arg_parser = ArgumentParser(description="QUiLoader example",
formatter_class=RawTextHelpFormatter)
arg_parser.add_argument('file', type=str, help='UI file')
args = arg_parser.parse_args()
ui_file_name = args.file
app = QApplication(sys.argv)
ui_file = QFile(ui_file_name)
if not ui_file.open(QIODevice.ReadOnly):
reason = ui_file.errorString()
print(f"Cannot open {ui_file_name}: {reason}")
sys.exit(-1)
loader = QUiLoader()
widget = loader.load(ui_file, None)
ui_file.close()
if not widget:
print(loader.errorString())
sys.exit(-1)
widget.show()
sys.exit(app.exec_())
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