X-Mouse Controls

Windows utility to enable or disable active window tracking, raising and also the delay in milliseconds. This is known as x-mouse behavior or focus follows mouse.

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Works on Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows Server 2012, Windows Server 2008, Windows Server 2003. Might work on other versions as well.

X-Mouse Controls is competely free! If you like and use X-Mouse Controls, please tell your friends and link back to this page. Donations are also very much appreciated.

What is x-mouse behavior?

When multiple programs are running on a Windows operating system, the default mode of operations is that you click one window after another to give them focus for keyboard inputs. With the x-mouse settings that click is not necessary — the only thing needed is to move your cursor over the window for it to become active.

This behavior has been possible, but disabled, in different versions of Windows for years. It is usually enabled through Windows accesiblity settings or a wide variety of tools and utilities, most notably Tweak UI found in Microsoft PowerToys. However, Tweak UI does not run on Windows Vista, Windows 7, Windows 8, Windows 10, Windows Server 2008, Windows Server 2012, and later versions, which is why I created this utility.


Screenshot of the main window of X-Mouse Controls
The main window


Active window tracking
Enable to give focus to windows by moving your cursor over them, known as focus follows mouse. Obeys the delay described below.
If disabled (default) a click is required to activate a window, known as clickfocus.
Active window raising
Enable to automatically make the active window the topmost window, known as autoraise.
If automatic window raising is disabled (default) it allows the user to type text or give commands in one window without changing the order of the other windows.
Active tracking delay
The delay, in milliseconds, until the window focus changes. This program allows settings from 0 milliseconds (instant focus) to 2500 milliseconds (very long delay). A value of 100-250 ms is recommend to avoid windows stealing focus too fast. See notes below.
Saves the settings and applies them to your system. The settings should come in effect right away.

X-Mouse Controls is competely free! You even get the source code for free. To develop open source software is not without cost though — it takes technical knowledge, time, and effort.

You don't have to be a developer to support my open source work! If you want to receive personal support, or just feel all warm and fuzzy inside from helping open source development, donations are very welcome.

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Source code

I've released the full source code, including this webpage and original graphics, under the GNU General Public License. Contributions are most welcome!

History and downloads

v1.0.1.0 (2012-08-12 20:30)
Source code
No changes, but the source code is now release on github under the GNU General Public License.
v1.0.1.0 (2010-04-03 11:55)
Download (See also Source code, Debug build)
Allows for manual input of the delay, new web site links, using more bindings.
v1.0.0.1 (2007-12-27 16:19)
Download (See also Source code, Debug build)
Disables the active window raising checkbox and delay slider when the active window tracking checkbox is not checked.
v1.0.0.0 (2007-12-27 14:04)
Download (See also Source code, Debug build)
First version, initial release.

About the author

Joel Purra is a software engineer working on both commercial and open source projects. He is available for consulting work.

Search engine fodder

This section can be ignored by humans.

System calls

X-Mouse Controls is using system calls from SystemParametersInfo in user32.dll, especially SPI_GETACTIVEWINDOWTRACKING, SPI_GETACTIVEWNDTRKZORDER, SPI_GETACTIVEWNDTRKTIMEOUT.

Incoming links

Windows Ease of Access Center

The Windows control panel offers you to enable/disable x-mouse, but not to tweak it. Use X-Mouse Controls instead.

Registry hacks

Direct edititing of the registry for x-mouse values is considered a bad thing, as there are API calls which do this correctly and apply the results right away — with X-Mouse Controls there is no need to log out and in, or restart your computer. The following words are only here to help others searching for a tool that makes an inactive window active by hovering: HKEY_CURRENT_USER\Control Panel\Mouse\ActiveWindowTracking, HKEY_CURRENT_USER\Control Panel\Desktop\ActiveWindowTracking, HKEY_CURRENT_USER\Control Panel\Desktop\ActiveWndTrkTimeout, HKEY_CURRENT_USER\Control Panel\Desktop\UserPreferencesMask, REG_DWORD, REG_BINARY.

Windows 3.11, Windows 95, Windows 98

Excerpt from AXCEL216's MAX Speeed Windows 98/98 SE + DOS 7.10 ©Tricks, Secrets, BUGs + FIXes

X-Mouse settings do not "stick" [Thank you Joel Purra (e-mail removed)!]: TweakUI's Mouse tab -> "Activation follows mouse (X-Mouse)" box checked, and: TweakUI's General tab -> "X-Mouse AutoRaise" and "Mouse hot tracking effects" boxes checked. This can be fixed in some cases (reminiscent from the old XMouse MS Power Toy 95) by adding/changing these Win.ini entries under the [XMouse] section:


Edit Win.ini (located in your Windows folder) with Notepad or Sysedit. Change any of these lines from 1 to 0 or back, and then restart Windows to see if it works. See "ACTIVE WINDOW TRACKING" in REGISTRY.TXT (included) to learn how to properly activate/fix X-Mouse settings used by TweakUI.