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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:FDL$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Free Documentation License Usage
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** Documentation License version 1.3 as published by the Free Software
** Foundation and appearing in the file included in the packaging of
** this file. Please review the following information to ensure
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/*!
\page qml-changes-qt6.html
\title Porting to Qt 6 - Qt QML
\ingroup porting-guides-5-to-6
\brief Migrate Qt QML to Qt 6.
Qt 6 is a result of the conscious effort to make the framework more
efficient and easy to use.
We try to maintain binary and source compatibility for all the public
APIs in each release. But some changes were inevitable in an effort to
make Qt a better framework.
In this topic we summarize those changes in Qt QML, and provide
guidance to handle them.
\section1 QML language
\c variant properties, which have been marked as obsolete since Qt 5, are now treated in exactly
the same way as \c var properties.
Code that relied on implicit string conversion triggered on assignment to variant properties
should be updated to explicitly create an object of the correct type.
\oldcode
property variant myColor: "red"
\newcode
property variant myColor: Qt.color("red")
\endcode
Implicit conversions were done for strings that could be parsed as
\list
\li color (use Qt.color instead instead),
\li date (use the Date object instead),
\li rect (use Qt.rect instead) and
\li size (use Qt.size instead)
\endlist
\c variant still remains a deprecated keyword in Qt 6, though new code is strongly encouraged to
use \c var properties instead.
\note If the type of the property is known not to change, use a property of the concrete type,
instead of a \c var property.
\note These conversions were also applied to \c QVariant properties of classes registered with
the engine. As with \c variant properties, code that relied on implicit string conversions need
to use the corresponding functions of the Qt object.
*/
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