2 files changed, 7 insertions, 3 deletions

diff --git a/config.def.h b/config.def.h
index 4bccb5d..fca0ae0 100644
--- a/config.def.h
+++ b/config.def.h
@@ -3,3 +3,4 @@ static const char *colorname[NUMCOLS] = {
         "#005577",   /* during input */
         "#CC3333",   /* failed/cleared the input */
 };
+static const Bool failonclear = True;
diff --git a/slock.c b/slock.c
index 6502c86..1551a9e 100644
--- a/slock.c
+++ b/slock.c
@@ -26,7 +26,7 @@
 enum {
         INIT,
         INPUT,
-        EMPTY,
+        FAILED,
         NUMCOLS
 };
 
@@ -42,6 +42,7 @@ typedef struct {
 static Lock **locks;
 static int nscreens;
 static Bool running = True;
+static Bool failure = False;
 static Bool rr;
 static int rrevbase;
 static int rrerrbase;
@@ -153,8 +154,10 @@ readpw(Display *dpy, const char *pws)
 #else
                                 running = !!strcmp(crypt(passwd, pws), pws);
 #endif
-                                if (running)
+                                if (running) {
                                         XBell(dpy, 100);
+                                        failure = True;
+                                }
                                 len = 0;
                                 break;
                         case XK_Escape:
@@ -178,7 +181,7 @@ readpw(Display *dpy, const char *pws)
                                 }
                         } else if (llen != 0 && len == 0) {
                                 for (screen = 0; screen < nscreens; screen++) {
-                                        XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[EMPTY]);
+                                        XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[failure || failonclear ? FAILED : INIT]);
                                         XClearWindow(dpy, locks[screen]->win);
                                 }
                         }