added an creatnotify event handler

client.c

@@ -96,6 +96,14 @@ attach(Client *c) {
 	clients = c;
 }
 
+void
+ban(Client *c) {
+	if (c->isbanned)
+		return;
+	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+	c->isbanned = True;
+}
+
 void
 configure(Client *c) {
 	XConfigureEvent ce;
@@ -298,6 +306,37 @@ togglefloating(const char *arg) {
 	lt->arrange();
 }
 
+void
+unban(Client *c) {
+	if (!c->isbanned)
+		return;
+	XMoveWindow(dpy, c->win, c->x, c->y);
+	c->isbanned = False;
+}
+
+void
+unmanage(Client *c) {
+	XWindowChanges wc;
+
+	wc.border_width = c->oldborder;
+	/* The server grab construct avoids race conditions. */
+	XGrabServer(dpy);
+	XSetErrorHandler(xerrordummy);
+	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
+	detach(c);
+	detachstack(c);
+	if(sel == c)
+		focus(NULL);
+	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+	setclientstate(c, WithdrawnState);
+	free(c->tags);
+	free(c);
+	XSync(dpy, False);
+	XSetErrorHandler(xerror);
+	XUngrabServer(dpy);
+	lt->arrange();
+}
+
 void
 updatesizehints(Client *c) {
 	long msize;
@@ -376,26 +415,3 @@ updatetitle(Client *c) {
 	c->name[sizeof c->name - 1] = '\0';
 	XFree(name.value);
 }
-
-void
-unmanage(Client *c) {
-	XWindowChanges wc;
-
-	wc.border_width = c->oldborder;
-	/* The server grab construct avoids race conditions. */
-	XGrabServer(dpy);
-	XSetErrorHandler(xerrordummy);
-	XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
-	detach(c);
-	detachstack(c);
-	if(sel == c)
-		focus(NULL);
-	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
-	setclientstate(c, WithdrawnState);
-	free(c->tags);
-	free(c);
-	XSync(dpy, False);
-	XSetErrorHandler(xerror);
-	XUngrabServer(dpy);
-	lt->arrange();
-}

dwm.h

@@ -96,6 +96,7 @@ extern Window root, barwin;
 
 /* client.c */
 void attach(Client *c);			/* attaches c to global client list */
+void ban(Client *c);			/* bans c */
 void configure(Client *c);		/* send synthetic configure event */
 void detach(Client *c);			/* detaches c from global client list */
 void focus(Client *c);			/* focus c if visible && !NULL, or focus top visible */
@@ -104,9 +105,10 @@ void manage(Window w, XWindowAttributes *wa);	/* manage new client */
 void resize(Client *c, int x, int y,
 		int w, int h, Bool sizehints);	/* resize with given coordinates c*/
 void togglefloating(const char *arg);	/* toggles sel between floating/tiled state */
+void unban(Client *c);			/* unbans c */
+void unmanage(Client *c);		/* destroy c */
 void updatesizehints(Client *c);	/* update the size hint variables of c */
 void updatetitle(Client *c);		/* update the name of c */
-void unmanage(Client *c);		/* destroy c */
 
 /* draw.c */
 void drawstatus(void);			/* draw the bar */

event.c

@@ -224,6 +224,19 @@ configurenotify(XEvent *e) {
 	}
 }
 
+static void
+createnotify(XEvent *e) {
+	static XWindowAttributes wa;
+	XCreateWindowEvent *ev = &e->xcreatewindow;
+
+	if(!XGetWindowAttributes(dpy, ev->window, &wa))
+		return;
+	if(wa.override_redirect)
+		return;
+	if(!getclient(ev->window) && (wa.map_state == IsViewable))
+		manage(ev->window, &wa);
+}
+
 static void
 destroynotify(XEvent *e) {
 	Client *c;
@@ -350,6 +363,7 @@ void (*handler[LASTEvent]) (XEvent *) = {
 	[ButtonPress] = buttonpress,
 	[ConfigureRequest] = configurerequest,
 	[ConfigureNotify] = configurenotify,
+	[CreateNotify] = createnotify,
 	[DestroyNotify] = destroynotify,
 	[EnterNotify] = enternotify,
 	[LeaveNotify] = leavenotify,

layout.c

@@ -11,22 +11,6 @@ static unsigned int nlayouts = 0;
 static unsigned int masterw = MASTERWIDTH;
 static unsigned int nmaster = NMASTER;
 
-static void
-ban(Client *c) {
-	if (c->isbanned)
-		return;
-	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
-	c->isbanned = True;
-}
-
-static void
-unban(Client *c) {
-	if (!c->isbanned)
-		return;
-	XMoveWindow(dpy, c->win, c->x, c->y);
-	c->isbanned = False;
-}
-
 static void
 tile(void) {
 	unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;