Richard Grenville dc04a7d8ca Improvement: Add EWMH _NET_WM_ACTIVE_WINDOW support ...

- Add support for using _NET_WM_ACTIVE_WINDOW to track focus (rather
  than using FocusIn/Out events) as --use-ewmh-active-win.

- Add wid_get_attr() and use it in place of XGetWindowProperty() in
  various places.

- Remove dpy parameter from find_win() and find_toplevel() as it's unused.

- Fix a writing-to-freed-memory issue in paint_preprocess().

2012-11-04 18:45:39 +08:00

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