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	added black window - slock - simple X display locker utility
	git clone git://git.suckless.org/slock
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	---
	commit 50bc1a788e8900cb40e8a64a22ddf99393dbe788
	parent 763e52878dba100e79c6f4a837a92e1df0d41ae0
	Author: Anselm R. Garbe <[email protected]>
	Date: Wed, 11 Oct 2006 13:33:04 +0200

	added black window
	Diffstat:
	M slock.c \| 20 +++++++++++++++++---

	1 file changed, 17 insertions(+), 3 deletions(-)
	---
	diff --git 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", s…
	@@ -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 \| CWBac…
	+ 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), …
	+ if((running = strncmp(crypt(passwd, sp->sp_pwd…
	+ 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;
	}