Editing Windows API (section)

===User Interface===
The [[Windows User|User Interface]] component provides features to create and manage screen [[window (computing)|windows]] and most basic controls, such as [[button (computing)|buttons]] and [[scrollbar]]s, receive mouse and keyboard input, and other functions associated with the [[graphical user interface]] (GUI) part of Windows. This functional unit resides in <samp>user.exe</samp> on 16-bit Windows, and <samp>[[user32.dll]]</samp> on 32-bit Windows. Since [[Windows XP]] versions, the basic controls reside in <samp>comctl32.dll</samp>, together with the common controls (Common Control Library).<ref name="msdn-ui">[[Microsoft Developer Network]] (July 2005). ''[http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winprog/winprog/user_interface.asp User Interface.]'' Retrieved August 28, 2005.</ref>