Re: changing active window

Hi;

To change the active window, you want to send a message to the root
window rather than change any properties. For example, something like
the following should do it;

void
activate_window(Display *dpy, Window root, Window win_to_activate)
{
  XEvent ev;
  Atom atom_net_active
    = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);

  memset(&ev, 0, sizeof ev);
  ev.xclient.type = ClientMessage;
  ev.xclient.window = win_to_active;
  ev.xclient.message_type = atom_net_active;
  ev.xclient.format = 32;

  ev.xclient.data.l[0] = 0;

  XSendEvent(dpy, root, False, SubstructureRedirectMask, &ev);
}


Also see code of desktop/modules/tasks.c 

Good Luck!

  -- Matthew