Re: ClientMessage to the root window

[Bradley T Hughes <bhughes trolltech com>]

On Thursday 13 December 2001 21:13, Olivier Chapuis wrote:
> Hello,
>
> From the wm-spec:
>
>    Whenever this spec speaks about "sending a message to the root
>    window", it is understood that the client is supposed to create a
>    ClientMessage event with the specified contents and send it by using
> a SendEvent request with the following arguments:
>
>       destination     root
>       propagate       False
>       event-mask      (SubstructureNotify|SubstructureRedirect)
>       event           the specified ClientMessage
>
> I suggest to add the following (in a better English):
>
>   The  xclient.window member of the event structure should be set to the
>   Root window id (or None) if the message concerns a root property or
>   to the window id of the concerned window for a window property.
>   Moreover, the xany.window member should be set to the window id of the
>   main window of the application which sends the message. Rational: this
>   allows the window manager to know which application send the client
>   message.
>
> I find this useful to be able to configure the wm to reject some client
> messages that the user does not want. Example: One may want to reject
> some messages that ask to switch a window to an other desktop
> if it is the application window  owner which asks this and accept
> the message if it is not the case (and it it is probably a taskbar
> which send the message).

This is a good suggestion, but unfortunately won't work, since the XEvent 
structure is a union, and the xevent.xany.window and xevent.xclient.window 
are the same thing, assigning one assigns the other.

> Regards, Olivier
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-- 
--
Bradley T. Hughes <bhughes trolltech com>
Trolltech AS - Waldemar Thranes gt. 98 N-0175 Oslo, Norway