On Sonntag, 4. August 2013 16:08:08 CEST, László Monda wrote:
I'm writing an application that has to be aware of the current window. So far I've extracted the relevant code from xprop and put it into https://github.com/mondalaci/current-window-linux . (I screwed up
The above solution would work but it'd involve polling the info of the current window from time to time which is not very efficient. Wondering whether there's a way to register a callback for a "window change" event. That'd be so much more efficient. Ideally I'm looking for a way to do this in a window manager independent manner.
XSelectInput(dpy, root, PropertyChangeMask ); You'll then receive "PropertyNotify" type events (google for "X11 event handler" w/o quotes - you'll find examples for main event loop implementations) from the root window. Then you've to check whether it's the correct property. Notice: I didn't check what you're actually trying to do, but this is different from selecting input of FocusChangeMask on each interesting window and receive FocusIn/Out events. Focus and Active window do not necessarily have to go along each other (and also clients grabbing the keyboard might actually receive keyboard events) Cheers, Thomas _______________________________________________ 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
