Wed, 31 Oct 2012 20:05:22 +0100 от Thomas Lübking <thomas.luebk...@gmail.com>: > On Mittwoch, 31. Oktober 2012 18:19:02 CEST, Vladimir A. Pavlov wrote: > > > One more question: would it be correct to set only WM_WINDOW_ROLE > > and not to set WM_CLASS, WM_CLIENT_LEADER, SM_CLIENT_ID? > > No. It does *not* substitute any of those.
I understand it does not substitute them. But if I have a proper WM_WINDOW_ROLE value I don't need WM_CLASS/etc at all. I'm just searching a way to distinguish between taskbar and menu. AFAIU I should set WM_CLASS to somebox/SomeBox (not, for example, somebox/Menu or someboxmenu/SomeBox) for it so WM_CLASS wouldn't help me here. So I see no reason to set WM_CLASS since the only property that would help me is WM_WINDOW_ROLE. I'd like to only set WM_WINDOW_ROLE and leave WM_CLASS/WM_CLIENT_LEADER/etc empty to have as little code as possible since I don't use those. > In general you should provide the info you have to allow the WM to classify > the client as good as possible, but this of course heavily depends on what > you're doing there (ie. if i write me some testing X11 code to fire a window > and do "sth." with it, i won't set any of those properties.) > > WM_CLASS and WM_NAME are kind of "mandatory" for regular clients, esp. > WM_CLASS allows WMs to autogroup clients on one VD, in a tab stack, navigate > only inside this class etc. > > The SM_CLIENT_ID is required on the window that is set as "WM_CLIENT_LEADER" > by itself or other clients and this information is requried if you want to > preserve window states across sessions (logout, login, autostart former > present clients) That's what I'm asking about. If I set WM_CLIENT_LEADER for a window I _must_ set SM_CLIENT_ID for it. But must I set anything for a window I set WM_WINDOW_ROLE for? IOW is it an allowable situation when a window only have WM_WINDOW_ROLE property and nothing else? > Whether you want this depends on what client you write but should provided by > a toolkit (in case you're writing such) and is supported by the "major" ones > (Qt & Gtk+) I'm working on a window manager, not a regular client. It can distinguish between its windows (taskbar, menu, etc). And if I set menu role to "somebox-menu" then external apps could detect window manager menu as well and there would be no need in WM_CLASS/WM_NAME/etc. My goal is to allow other applications to distinguish between windows created by somebox by as little code as possible. I thought about setting WM_CLASS but it appeared to be incorrect. Not I think about using WM_WINDOW_ROLE so WM_CLASS is unnecessary for my task. But what do the standards say about this? _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
