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Windows USER is a component of the Microsoft Windows operating system that provides core functionality for building simple user interfaces. The component has existed in all versions of Windows, and includes functionality for window management, message passing, input processing and standard controls. ==Functionality and role== Windows USER provides a large part of the core user experience for Microsoft Windows. Historically, USER was responsible for:〔Petzold, Charles (1998). ''Programming Windows Fifth Edition'', Microsoft Press, ISBN 978-1-57231-995-0 .〕 〔Chen, Raymond (2007). ''The Old New Thing'', Addison-Wesley Professional, ISBN 978-0-321-44030-3 〕 * Causing windows to be drawn * Obscuring overlapping windows behind others * Window size and positioning * Providing all the standard window management controls (such as close boxes or title bars) * Providing the standard Windows menu bar * Providing of standard controls (such as button, List box or Edit Box) * Providing dialog box management (short-cut keys, tab key processing) * Processing all user input from the mouse and keyboard * The desktop background image * Drawing all standard visual elements * Inter-process communication using Dynamic Data Exchange * Mouse pointer cursor display and management * Data transfer (Clipboard) Gradually, as Windows has become larger and better factored, Windows USER has cooperated with other components to provide this functionality: * Controls: Starting with Windows 95, new controls were placed into a separate common controls component. Starting with Windows XP, new implementations of the standard controls were also moved to that same component. * Windows Management experience: Starting with Windows Vista, drawing standard window management was moved from Windows USER to the Desktop Window Manager. * Standard Visuals: Starting with Windows XP, visual elements are drawn by the Theming component. * Inter-program communication: Starting with Windows 3.1, Object Linking and Embedding replaced Dynamic Data Exchange as the recommended model for inter program communication. * Menu bar: Starting in Windows 7, the Ribbon interface is a recommended replacement for the menu bar and context menus. It is provided by the UIRibbon component.〔(Windows Ribbon Framework )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Windows USER」の詳細全文を読む スポンサード リンク
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