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Diffstat (limited to 'src/widgets/doc/src/qt6-changes.qdoc')
| -rw-r--r-- | src/widgets/doc/src/qt6-changes.qdoc | 127 |
1 files changed, 97 insertions, 30 deletions
diff --git a/src/widgets/doc/src/qt6-changes.qdoc b/src/widgets/doc/src/qt6-changes.qdoc index 4f0379a2f6..c4d757fe6d 100644 --- a/src/widgets/doc/src/qt6-changes.qdoc +++ b/src/widgets/doc/src/qt6-changes.qdoc @@ -1,35 +1,11 @@ -/**************************************************************************** -** -** Copyright (C) 2020 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:FDL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Free Documentation License Usage -** Alternatively, this file may be used under the terms of the GNU Free -** 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 -** the GNU Free Documentation License version 1.3 requirements -** will be met: https://www.gnu.org/licenses/fdl-1.3.html. -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only /*! \page widgets-changes-qt6.html - \title Porting to Qt 6 - Qt Widgets - \ingroup porting-guides-5-to-6 - \brief Migrate Qt Widgets to Qt 6. + \title Changes to Qt Widgets + \ingroup changes-qt-5-to-6 + \brief Changes in Kernel classes, Widgets, ItemViews, and Utility Classes. Qt 6 is a result of the conscious effort to make the framework more efficient and easy to use. @@ -41,6 +17,97 @@ In this topic we summarize those changes in Qt Widgets, and provide guidance to handle them. - \section1 ADD STUFF HERE + \section1 Kernel classes + \section2 The QWidget class + + The virtual QWidget::enterEvent() handler now receives a QEnterEvent* + parameter which has information about the pointer position, rather than + a plain QEvent*. + + \section2 QDesktopWidget and QApplication::desktop() + + QDesktopWidget was already deprecated in Qt 5, and has been removed in + Qt 6, together with QApplication::desktop(). + + QScreen provides equivalent functionality to query for information about + available screens, screen that form a virtual desktop, and screen + geometries. + + Use QWidget::setScreen() to create a QWidget on a specific display; + note that this does not move a widget to a screen in a virtual desktop + setup. + + \section2 QAction, QActionGroup + + These classes have been moved into the QtGui module. Member functions that + depend on types defined in QtWidgets (such as QAction::menu() and + QAction::setMenu()) are implemented as templates that will be instantiated + only when called. + + \section1 Widgets + + \section2 The QAbstractButton class + + The default timeout parameter for QAbstractButton::animateClick() is + removed to allow modern connection syntax without the need for qOverload. + + \section2 The QComboBox class + + The QComboBox::setModel() function is now virtual. + + \section2 The QDateTimeEdit class + + When QDateTimeEdit::setDateTime() is called with a date-time whose + time-spec doesn't match that of the QDateTimeEdit instance, the + date-time is converted to the time-spec of the QDateTimeEdit. This + gives a date-time that describes the same instant in time, but + does so in the same terms as the QDateTimeEdit uses. Previously, + the date and time from the passed date-time were combined with the + time-spec of the widget, ignoring the time-spec of the date-time; + this could describe a different point in time than the one + described by the date-time passed. + + \section1 ItemViews + + \section2 The QAbstractItemView class + + The virtual viewOptions() method that previously returned a QStyleOptionViewItem + object has been renamed to initViewItemOption, and initializes a + QStyleOptionViewItem object that's passed in through a pointer. + + \section1 Styling Classes and related APIs + + All versioned QStyleOption subclasses are consolidated, and the version + numbers are reset to 1. + + The various initStyleOption() methods in widget classes are now virtual. + + \section2 Style sheet changes + + Styling a widget by its property in Qt 5 vs Qt 6 is different, especially if the + property is an enum. In Qt 5, the selector value for such a property is the integer + equivalent of the enum value, while in Qt 6 the string value is used. The following + example demonstrates this difference: + + \code + // Qt 5 style sheet + QToolButton[popupMode="1"] { + padding-right: 20px; + } + \endcode + + \code + // Qt 6 style sheet + QToolButton[popupMode=MenuButtonPopup] { + padding-right: 20px; + } + \endcode + + \section1 Utility Classes + + \section2 QUndoCommand, QUndoStack, and QUndoGroup + + The widget independent classes of the Undo/Redo framework have been moved + into the QtGui module. */ |