Xmouse is a system of mouse control in computer operating systems used instead of the standard selection behavior. The xmouse system automatically selects objects or activates windows after hovering the mouse over the object for a certain period of time.
Description and comparison
Xmouse is a system of mouse control used instead of the standard system of selection on computers (most notably Windows and X11, where it is an option). The behavior is similar to mouse control in X Windows. Where normal Windows and X11 mouse control uses single-click for selection and double-click to open/edit/etc, the xmouse system automatically selects objects after hovering the mouse over the object for a certain period of time (often one second). Hovering over a window makes it the active window. used to configure focusing windows in the user interface by hovering. On newer Windows versions, the behavior can be configured using Tweak UI or directly from the Windows Registry. The setting is also built into Windows Vista and Windows 7 in the Ease of Access Center as "Activate a window by hovering over it with the mouse", however preventing the activated window from moving to foreground can be done by using the relevant <code>SystemParametersInfo</code> system calls in Windows' USER component, or by configuring the registry.
Reception
Proponents of the xmouse system claim it has many advantages over the regular system of selection.