2019-03-21 13:31:32 +01:00
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/****************************************************************************
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**
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** Copyright (C) 2019 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Creator documentation.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Free Documentation License Usage
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** Alternatively, this file may be used under the terms of the GNU Free
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** Documentation License version 1.3 as published by the Free Software
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** Foundation and appearing in the file included in the packaging of
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** this file. Please review the following information to ensure
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** the GNU Free Documentation License version 1.3 requirements
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** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
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**
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****************************************************************************/
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/*!
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//! [python project wizards]
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\section2 Creating Qt for Python Applications
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\l {https://doc.qt.io/qtforpython/index.html}{Qt for Python} enables you
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to use Qt 5 API in Python applications. You can use the PySide2 module to
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gain access to individual Qt modules, such as \l {Qt Core}, \l {Qt GUI},
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and \l {Qt Widgets}.
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The Qt for Python Application wizards generate a \c {.pyproject} file that
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lists the files in the Python project and a \c {.py} file that contains
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some boilerplate code.
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The \c{.pyproject} files are JSON-based configuration files that replace
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the previously used \c {.pyqtc} configuration files. You can still open and
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use \c {.pyqtc} files, but we recommend that you choose \c{.pyproject} files
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for new projects.
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2019-07-03 13:25:59 +02:00
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The \uicontrol {Qt for Python - Window} wizard enables you to create a
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Python source file for a new class that you can add to a Python project.
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Specify the class name, base class, and and source file for the class.
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\image qtcreator-python-wizard-app-window.png
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The Window wizard adds the imports to the source file to provide
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access to the QApplication and the base class you selected in the Qt
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Widgets module:
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2019-03-21 13:31:32 +01:00
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\badcode
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import sys
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from PySide2.QtWidgets import QApplication, QWidget
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\endcode
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2019-07-03 13:25:59 +02:00
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The Window wizard also adds a main class with the specified name that
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inherits from the specified base class:
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\badcode
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class MyWidget(QWidget):
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def __init__(self):
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QWidget.__init__(self)
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\endcode
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Next, the Window wizard adds a main function, where it creates a
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QApplication instance. As Qt can receive arguments from the command line,
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you can pass any arguments to the QApplication object. Usually, you do not
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need to pass any arguments, and you can use the following approach:
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\badcode
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if __name__ == "__main__":
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app = QApplication([])
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\endcode
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Next, the Window wizard instantiates the \c MainWindow class and shows it:
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\badcode
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window = MyWidget()
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window.show()
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...
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\endcode
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Finally, the Window wizard calls the \c app.exec_() method to enter the Qt
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main loop and start executing the Qt code:
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\badcode
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sys.exit(app.exec_())
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\endcode
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2019-07-03 13:25:59 +02:00
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The Empty wizard adds similar code to the source file, but it does
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not add any classes, so you need to add and instantiate them yourself.
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For examples of creating Qt for Python applications, see
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\l {https://doc.qt.io/qtforpython/tutorials/index.html}
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{Qt for Python Examples and Tutorials}.
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//! [python project wizards]
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*/
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