Click here to Skip to main content
11,410,550 members (58,381 online)
Click here to Skip to main content

X-Window Manager like dragging and resizing of windows

, 21 Sep 2005
Rate this:
Please Sign up or sign in to vote.
This article shows how to make use of a mouse hook to allow simple dragging and resizing of windows.


Hooks are a powerful feature of Windows and can be used to trap nearly all events in the Windows environment. This example shows how to trap mouse events and implements a simple window manager. It allows you to move and resize windows, easily following the style of many window managers in the UNIX X-Window environment.

With this tool, any window on your Desktop can easily be dragged with the left-mouse button while holding down the ALT key, starting anywhere in the window's client area. In the same way, it is possible to resize any window while dragging with the right mouse-button, holding down ALT. That's in my opinion far more comfortable than aiming with the mouse for the border or a corner of the window Smile | :)

The tool consists of two parts. First the main program that loads the second part - a DLL that will subsequently be injected in other processes to trap mouse events. For details about this, you may refer to other great articles at CodeProject as for example Hooks and DLLs by Joseph M. Newcomer in the DLL-section. The main program further installs a tray icon (warning: programmer's art Smile | :) ), that allows the user to quit the tool.


  • 06.08.2003

    Initial version.

  • 17.04.2003

    Bug fix: proper handling of Alt-key release while dragging or sizing (thanks Whosit).

  • 10.09.2005

    Bug fix: don't move or resize windows that are maximized (thanks TWink).


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Markus Rollmann
Web Developer
Germany Germany
No Biography provided

Comments and Discussions

QuestionOK to fork? Pinmemberfoobarz29-Dec-08 12:31 
AnswerRe: OK to fork? PinmemberMarkus Rollmann29-Dec-08 21:40 
GeneralWorks in Vista! PinmemberJXON4-Sep-08 20:49 
GeneralGreat! PinmemberMwob2-May-07 23:18 
GeneralRe: Great! PinmemberAlexHaan3-May-07 1:38 
GeneralAwesome Pinmemberaijfisuhhtrtl16-Apr-07 4:34 
GeneralPrevent Users from Resizing Windows Pinmembermrtm30509-Mar-07 12:14 
Generalis snapping possible Pinmembermmanson13219-Jan-07 10:26 
GeneralTwo suggestions PinsussAnonymous5-Oct-05 2:02 
GeneralRe: Two suggestions PinmemberMarkus Rollmann5-Oct-05 2:16 
GeneralCursor shape PinmemberEric Lapouge22-Sep-05 22:32 
GeneralBugs and Improvements PinmemberTwink7-Sep-05 14:54 
GeneralRe: Bugs and Improvements PinmemberMarkus Rollmann10-Sep-05 1:30 
GeneralRe: Bugs and Improvements PinmemberTwink11-Sep-05 15:47 
Questionbug? Pinmemberp1ayer7-Jul-03 20:27 
AnswerRe: bug? PinmemberMarkus Rollmann7-Jul-03 21:23 
GeneralGreat technique PinmemberVernero Cifagni17-Apr-03 3:26 
Generalvery creative, so 5 points! PinmemberZhefu Zhang17-Apr-03 3:13 
General(update) PinmemberMarkus Rollmann17-Apr-03 2:59 
GeneralRe: (update) PinmemberWhosit17-Apr-03 4:37 
GeneralDoesnt forget right away PinmemberWhosit16-Apr-03 11:31 
GeneralRe: Doesnt forget right away PinmemberMarkus Rollmann16-Apr-03 11:40 
GeneralRe: Doesnt forget right away PinmemberWhosit16-Apr-03 11:47 
GeneralRe: Doesnt forget right away PinmemberMarkus Rollmann16-Apr-03 11:59 
GeneralChange for override PinmemberWhosit16-Apr-03 11:55 
GeneralRe: Change for override PinmemberMarkus Rollmann16-Apr-03 12:04 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Terms of Use | Mobile
Web03 | 2.8.150414.5 | Last Updated 21 Sep 2005
Article Copyright 2002 by Markus Rollmann
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid