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wm - window manager


wm/wm [ command [ arg... ] ]


Wm is an inferno window manager, providing the control mechanism for the user to manage to order and position of a dynamic collection of application windows. When started, it runs command, (by default wm/toolbar, see toolbar(1)) By itself, wm does not provide any means for starting new applications; that facility must be provided by an auxilliary program, wm/toolbar being one such example.

Control Inferface
Wm provides a control interface to programs running inside it through the Wmcontext adt that can be obtained from via the Draw->Context that it passes to applications that it starts (see draw-context(2)). Control messages it understands include:

start what
Start input on what. What can be ptr (pointer events), kbd (keyboard events) and control (window manager control events, see below).
key charval
Simulate a key event. Charval is the decimal value of the character that has been pressed. The character will be sent exactly as if it had been typed on the keyboard. This facility is used by keyboard(1).
!reshape tag reqid minx miny maxx maxy [how]
Reshape or create the window named tag. Reqid is ignored; minx..maxy give the desired bounding rectangle of the new window. If how is not given, or is exact, then wm will attempt to satisfy the request exactly. Otherwise, how tells wm how to determine the rectangle of the resulting image; it can be one of place (choose some appropriate position and size on screen), onscreen (modify the requested rectangle only so as to bring it on screen), or max (request the maximum available rectangle).
delete tag
Delete the window named by tag.
Raise all windows for the current context above the others.
Send all windows for the current context to the bottom.
!move tag reqid startx starty
Drag window tag interactively. Reqid is ignored. Startx and starty give the location of the pointer when the drag was initiated.
!size tag reqid
Interactively resize window tag.
By default, if a window changes position but not size, wm changes the origin of the window without creating a new image. Sending fixedorigin caused wm always to create a new image in that case.
kbdfocus [in]
If the decimal integer in is non-zero, request the keyboard focus, otherwise lose the keyboard focus.

Wm generates control messages to inform applications of things that have happened. These include:

rect minx miny maxx maxy
The screen rectangle has changed. minx..maxy gives the new bounding box of the screen.
haskbdfocus in
Informs an application of its current keyboard focus state. This message is generated in response to pointer events, and due to kbdfocus requests.
The window manager is closing down.

Controlling Application
The first application that starts under wm is given the privilege of being able to control other applications running under the same wm. If it sends a start control message, then it will also see any control requests sent by applications that wm itself does not understand and information about applications starting and leaving. Wm accepts several other control messages from its controlling application:

ctl id msg
Send message msg to application id.
Relinquish controller status. The next application that starts will get control status. This is used, for instance, to segue smoothly between logon(1) and toolbar(1).

If the controlling application has started control messages, wm sends it the following messages:

newclient id
A new client has connected, identified by id.
delclient id
Client id has left.
request id msg
Client id sent the request msg to the window manager, which it did not understand. This facility is used, for instance, by toolbar(1) to implement the task and untask requests.


File holding current screen rectangle.




toolbar(1), logon(1), tkclient(2), wmclient(2)

WM(1 ) Rev:  Sun Feb 22 17:41:21 GMT 2009