disallow zoom on maximized clients

client.c

@@ -196,13 +196,6 @@ killclient(Arg *arg)
 		XKillClient(dpy, sel->win);
 }
 
-void
-lower(Client *c)
-{
-	XLowerWindow(dpy, c->title);
-	XLowerWindow(dpy, c->win);
-}
-
 void
 manage(Window w, XWindowAttributes *wa)
 {

dwm.1

@@ -96,10 +96,6 @@ Moves current
 .B window
 while dragging.
 .TP
-.B Mod1-Button2
-Lowers current
-.B window.
-.TP
 .B Mod1-Button3
 Resizes current
 .B window

dwm.h

@@ -91,7 +91,6 @@ extern Client *getctitle(Window w);
 extern void gravitate(Client *c, Bool invert);
 extern void higher(Client *c);
 extern void killclient(Arg *arg);
-extern void lower(Client *c);
 extern void manage(Window w, XWindowAttributes *wa);
 extern void resize(Client *c, Bool sizehints, Corner sticky);
 extern void setsize(Client *c);

event.c

@@ -127,15 +127,14 @@ buttonpress(XEvent *e)
 		default:
 			break;
 		case Button1:
-			if(!c->ismax && (arrange == dofloat || c->isfloat)) {
+			if(!c->ismax) {
+				if(arrange == dofloat || c->isfloat) {
 					higher(c);
 					movemouse(c);
 				}
 				else
 					zoom(NULL);
-			break;
-		case Button2:
-			lower(c);
+			}
 			break;
 		case Button3:
 			if(!c->ismax && (arrange == dofloat || c->isfloat)) {
@@ -225,7 +224,7 @@ enternotify(XEvent *e)
 	Client *c;
 	XCrossingEvent *ev = &e->xcrossing;
 
-	if(ev->detail == NotifyInferior)
+	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 		return;
 
 	if((c = getclient(ev->window)) || (c = getctitle(ev->window)))