some more additions/fixes

client.c

@@ -93,6 +93,7 @@ focus(Client *c)
 	}
 	XUnmapWindow(dpy, c->title);
 	draw_bar();
+	discard_events(EnterWindowMask);
 	XFlush(dpy);
 }
 
@@ -116,7 +117,7 @@ manage(Window w, XWindowAttributes *wa)
 	XGetTransientForHint(dpy, c->win, &c->trans);
 	twa.override_redirect = 1;
 	twa.background_pixmap = ParentRelative;
-	twa.event_mask = SubstructureNotifyMask | ExposureMask;
+	twa.event_mask = ExposureMask;
 
 	c->title = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
 			0, DefaultDepth(dpy, screen), CopyFromParent,
@@ -191,11 +192,19 @@ unmanage(Client *c)
 	XFlush(dpy);
 	XSetErrorHandler(error_handler);
 	XUngrabServer(dpy);
-	discard_events(EnterWindowMask);
 	if(stack)
 		focus(stack);
 }
 
+Client *
+gettitle(Window w)
+{
+	Client *c;
+	for(c = clients; c; c = c->next)
+		if(c->title == w)
+			return c;
+	return NULL;
+}
 
 Client *
 getclient(Window w)

cmd.c

@@ -19,6 +19,22 @@ quit(void *aux)
 	running = False;
 }
 
+void
+sel(void *aux)
+{
+	const char *arg = aux;
+	Client *c;
+
+	if(!arg || !stack)
+		return;
+	if(!strncmp(arg, "next", 5))
+		focus(stack->snext ? stack->snext : stack);
+	else if(!strncmp(arg, "prev", 5)) {
+		for(c = stack; c && c->snext; c = c->snext);
+		focus(c ? c : stack);
+	}
+}
+
 void
 kill(void *aux)
 {

event.c

@@ -146,7 +146,7 @@ expose(XEvent *e)
 	Client *c;
 
 	if(ev->count == 0) {
-		if((c = getclient(ev->window)))
+		if((c = gettitle(ev->window)))
 			draw_client(c);
 		else if(ev->window == barwin)
 			draw_bar();

kb.c

@@ -19,6 +19,8 @@ static const char *proglist[] = {
 static Key key[] = {
 	{ Mod1Mask, XK_Return, run, term },
 	{ Mod1Mask, XK_p, run, proglist }, 
+	{ Mod1Mask, XK_k, sel, "prev"}, 
+	{ Mod1Mask, XK_j, sel, "next"}, 
 	{ Mod1Mask | ShiftMask, XK_c, kill, NULL}, 
 	{ Mod1Mask | ShiftMask, XK_q, quit, NULL},
 };

wm.h

@@ -63,6 +63,7 @@ extern void draw_bar();
 extern void run(void *aux);
 extern void quit(void *aux);
 extern void kill(void *aux);
+extern void sel(void *aux);
 
 /* client.c */
 extern void manage(Window w, XWindowAttributes *wa);
@@ -73,6 +74,7 @@ extern void update_name(Client *c);
 extern void draw_client(Client *c);
 extern void resize(Client *c);
 extern void update_size(Client *c);
+extern Client *gettitle(Window w);
 
 /* event.c */
 extern unsigned int discard_events(long even_mask);