added black window

diff --git a/slock.c b/slock.c
index 824baa29f360730a9c7d156cec8ebb738eef1c7c..0c02d964e2c9bd8ef667bf1ae6367e4801bdc094 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -15,13 +15,15 @@
 int
 main(int argc, char **argv) {
        char buf[32], passwd[256];
-       int num, prev_nitem;
+       int num, prev_nitem, screen;
        struct spwd *sp;
        unsigned int i, len;
        Bool running = True;
        KeySym ksym;
        Display *dpy;
+       Window w;
        XEvent ev;
+       XSetWindowAttributes wa;
 
        if((argc > 1) && !strncmp(argv[1], "-v", 3)) {
                fputs("slock-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
@@ -36,13 +38,23 @@ main(int argc, char **argv) {
                fputs("slock: cannot open display\n", stderr);
                exit(EXIT_FAILURE);
        }
+       screen = DefaultScreen(dpy);
 
        /* init */
        passwd[0] = 0;
-       while(XGrabKeyboard(dpy, DefaultRootWindow(dpy), True, GrabModeAsync,
+       while(XGrabKeyboard(dpy, RootWindow(dpy, screen), True, GrabModeAsync,
                         GrabModeAsync, CurrentTime) != GrabSuccess)
                usleep(1000);
 
+       wa.override_redirect = 1;
+       wa.background_pixel = BlackPixel(dpy, screen);
+       w = XCreateWindow(dpy, RootWindow(dpy, screen), 0, 0,
+                       DisplayWidth(dpy, screen), DisplayHeight(dpy, screen),
+                       0, DefaultDepth(dpy, screen), CopyFromParent,
+                       DefaultVisual(dpy, screen), CWOverrideRedirect | CWBackPixel, &wa);
+       XMapRaised(dpy, w);
+       XSync(dpy, False);
+
        /* main event loop */
        while(running && !XNextEvent(dpy, &ev))
                if(ev.type == KeyPress) {
@@ -66,7 +78,8 @@ main(int argc, char **argv) {
                        }
                        switch(ksym) {
                        case XK_Return:
-                               running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd));
+                               if((running = strncmp(crypt(passwd, sp->sp_pwdp), sp->sp_pwdp, sizeof(passwd))))
+                                       XBell(dpy, 100);
                                passwd[0] = 0;
                                break;
                        case XK_Escape:
@@ -87,6 +100,7 @@ main(int argc, char **argv) {
                                break;
                        }
                }
+       XDestroyWindow(dpy, w);
        XCloseDisplay(dpy);
        return 0;
 }