/**************************************************************************** ** ** Copyright (C) 2013 Ivan Vizir ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://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 http://www.qt.io/terms-conditions. For further ** information use the contact form at http://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: http://www.gnu.org/copyleft/fdl.html. ** $QT_END_LICENSE$ ** ****************************************************************************/ /*! \page qtwinextras-Overview.html \title Qt Windows Extras Overview \brief Qt Windows Extras provides classes and functions for using some Windows APIs in a Qt way Qt Windows Extras provide classes and functions that enable you to use miscellaneous Windows-specific functions. For example, you can convert Qt objects to Windows object handles and manipulate DWM glass frames. In addition, you can use features introduced with Windows 7, such as Aero Peek, Jump Lists, a progress indicator on a taskbar button, or a thumbnail toolbar. \section1 Type Conversion The QtWin namespace provides functions to convert Qt objects of classes such as QPixmap or QImage to Windows HBITMAP or HICON handles, and vice versa. \section1 DWM and Glass Frame You can determine whether a window is included in the DWM Flip3D rendering. The glass frame that was first introduced with Windows Vista can be easily manipulated using the QtWin::extendFrameIntoClientArea() and QtWin::enableBlurBehindWindow() functions. Windows 8 lost the glass effect, but applications can still integrate their windows into the system frame to visually separate window controls from the rest of the window or to focus the user's attention on window content. \image glass.png "Glass frame extended into client area of a window" \section1 Aero Peek The Windows 7 \b {Aero Peek} feature gives the users the powers of X-ray vision that enable them to peek past all open windows straight at the desktop and the gadgets placed there. They can view the contents of a window without actually switching to it. You can enable Aero Peek for a gadget-like window or for a window that constantly displays monitoring data. You can use the QtWin::setWindowExcludedFromPeek() function to exclude an application window from Aero Peek. \note Aero Peek is disabled in Windows 8 by default but can be enabled by the user. \image peek-on.png "A window excluded from Aero Peek" \section1 Taskbar The taskbar provides users with access to applications that are open on the desktop. Windows automatically creates buttons on the taskbar for accessing application windows. Windows 7 adds new features to the taskbar buttons that are discussed in the following sections. \section2 Overlay Icons and Progress Indicators You can use the QWinTaskbarButton class to set an overlay icon and the QWinTaskbarProgress class to display a progress indicator on a taskbar button. An overlay icon indicates change in the state of the application. A progress indicator shows how time-consuming tasks are progressing. \image taskbar-button.png Taskbar Button \section3 Taskbar Example The following example code illustrates how to use the QWinTaskbarButton and QWinTaskbarProgress classes to adjust the look of the taskbar button: \snippet code/taskbar.cpp taskbar_cpp \section2 Jump Lists An application can use Jump Lists to provide users with faster access to files or to display shortcuts to tasks or commands. \image jumplist.png Jump List \list \li \b Destinations — categorized shortcuts to files and URLs that the application can handle and even links to other applications. Windows provides two standard categories that can be added to the custom Jump List, in addition to the ones that the application can create itself. \li \b Recent and \b Frequent — so called \e known categories that are populated automatically by Windows when the application uses the QFileDialog::getOpenFileName() function or when the application is launched to open a file from the Windows shell. \li \b Tasks — shortcuts to application functionality. An application can display its most frequently used context-independent functions on task lists. \endlist \note To be able to add destinations to its Jump Lists, the application should associate itself with the file types it can handle. \section3 Jump List Example The following example code illustrates how to use the classes in the QWinJumpList and QWinJumpListItem classes to implement Jump Lists: \snippet code/jumplist.cpp jumplist \section2 Thumbnail Toolbar Applications can embed a toolbar in the thumbnail of a window, which is shown when hovering over its taskbar icon. A thumbnail toolbar may provide quick access to the window's commands without requiring the user to restore or activate the window. \image thumbbar.png Media player thumbnail toolbar \section3 Thumbnail Toolbar Example The following example code illustrates how to use the functions in the QWinThumbnailToolBar and QWinThumbnailToolButton class to implement a thumbnail toolbar: \snippet code/thumbbar.cpp thumbbar_cpp */