C�pia Daniel Secrieru <[EMAIL PROTECTED]>:
Hi,
> Does anyone knows anything about something similar to Windows
> WM_CLOSE
> message in Xlib?
> That is a message that is emitted when a client wants to close a
> window,
> before destroying it (so DestroyNotify doesn't do the trick). A close
> message doesn't necesarily mean that a destroy message/event will be
> emmited, that meaning that the client had decided not to destroy the
> window
> after all.
> I have a hunch that such a message/event might have something to do
> with
> the WM, but I couldn't find anything in the docs. Could someone please
> help
> me? Thanks...
In a xlib only based program, you should do something like:
Atom wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False);
XSetWMProtocols(display, top_window, &wm_delete_window, 1);
Then, in the event loop, I thnik it is something like:
switch (event->type) {
...
case ClientMessage:
if (event->xclient.message_type == wm_delete_window) {
/* cleanup, confirm save files, etc */
}
break;
...
}
Note that ClientMessage may also be used to pass data between windows,
but I think there is no largely used standard for it. You can use the data
field of the XClientMessageEvent structure to comunicate using the windows
as a kind of descriptor, and create you own message passing system using
plain X events (limited to 20 bytes each packet).
> Dany Secrieru,
> LFC - The X-Platform
> http://www.lfc2.net/
>
>
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Paulo
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