diff -burN sithwm-1.2.3/Makefile sithwm-1.2.3-patched/Makefile
--- sithwm-1.2.3/Makefile	2022-11-11 16:02:36.172233555 +0100
+++ sithwm-1.2.3-patched/Makefile	2022-11-11 17:42:49.347839802 +0100
@@ -35,15 +35,8 @@
 
 DEFINES += -DVERSION=\"$(version),\ Maul\" $(DEBIAN) -DCONFDIR=\"$(confdir)\" 
 
-OPT_$(CC) = -Os
-OPT_cc  = -xO2
-
-EXDEFS= $(OPT_$(CC))
-EXDEFS_d = -g
-
-CFLAGS_$(CC) = -std=c99 -Wall
-CFLAGS_cc  = 
-CFLAGS += $(CFLAGS_$(CC)) $(INCLUDES) $(DEFINES) $(EXDEFS$(D))
+CFLAGS ?= -march=native -O3 -g
+CFLAGS += -std=gnu2x $(INCLUDES) $(DEFINES)
 
 LDFLAGS += $(LDPATH) $(LIBS)
 
@@ -65,6 +58,7 @@
 	if [ -f sithwm.exe ]; then mv sithwm.exe sithwm; fi
 	mkdir -p $(prefix)/bin $(prefix)/share/man/man1 $(confdir)
 	install sithwm $(prefix)/bin
+	install xwmpid $(prefix)/bin
 	install sithwm.1 $(prefix)/share/man/man1
 	install default.sithwmrc $(confdir)
 	@if test -x /usr/bin/update-menus; then \
diff -burN sithwm-1.2.3/client.c sithwm-1.2.3-patched/client.c
--- sithwm-1.2.3/client.c	2008-04-14 22:10:44.000000000 +0200
+++ sithwm-1.2.3-patched/client.c	2022-11-11 12:42:01.802021585 +0100
@@ -248,3 +248,41 @@
    }
    get_client_props(c);
 }
+
+void sendcmessage(Window w, Atom a, long x, int isroot)
+{
+	XEvent ev;
+	int status;
+	long mask;
+
+	memset(&ev, 0, sizeof(ev));
+	ev.xclient.type = ClientMessage;
+	ev.xclient.window = w;
+	ev.xclient.message_type = a;
+	ev.xclient.format = 32;
+	ev.xclient.data.l[0] = x;
+	ev.xclient.data.l[1] = CurrentTime;
+	mask = NoEventMask;
+	if(isroot)
+		mask = SubstructureRedirectMask;
+	status = XSendEvent(dpy, w, False, mask, &ev);
+	if(status==0)
+		fprintf(stderr, "sithwm: sendcmessage failed\n");
+}
+
+void sendconfig(Client* c)
+{
+	XConfigureEvent ce;
+
+	ce.type = ConfigureNotify;
+	ce.event = c->dyn.window;
+	ce.window = c->dyn.window;
+	ce.x = c->dyn.area.pos.x;
+	ce.y = c->dyn.area.pos.y;
+	ce.width = c->dyn.area.w;
+	ce.height = c->dyn.area.h;
+	//ce.border_width = c->dyn.border;
+	ce.above = None;
+	ce.override_redirect = 0;
+	XSendEvent(dpy, c->dyn.window, False, StructureNotifyMask, (XEvent *) & ce);
+}
Binary files sithwm-1.2.3/client.o and sithwm-1.2.3-patched/client.o differ
diff -burN sithwm-1.2.3/default.sithwmrc sithwm-1.2.3-patched/default.sithwmrc
--- sithwm-1.2.3/default.sithwmrc	2007-10-22 21:22:31.000000000 +0200
+++ sithwm-1.2.3-patched/default.sithwmrc	2022-11-11 17:17:00.016941255 +0100
@@ -1,3 +1,8 @@
+cmd "xterm" "xterm"
+cmd "firefox" "firefox-bin"
+cmd "jdownloader" "/opt/jd2/JDownloader2"
+cmd "uget" "uget-gtk"
+cmd "exit" "kill `xwmpid sithwm`"
 
 # menu "Apps"
 #     menu "Viewers"
@@ -74,7 +79,7 @@
 
 key std		Escape		kill
 key std,shift	Escape		kill,abs
-
+key std		F4		exit			  -1
 key std		a		maxim,raise,mouse
 key std		f		fix
 
diff -burN sithwm-1.2.3/events.c sithwm-1.2.3-patched/events.c
--- sithwm-1.2.3/events.c	2007-10-18 14:44:58.000000000 +0200
+++ sithwm-1.2.3-patched/events.c	2022-11-11 17:37:08.009862153 +0100
@@ -160,7 +160,7 @@
 	    else
 #endif
 	    {
-	       KeySym key = XKeycodeToKeysym(dpy,zevent.xkey.keycode,0);
+	       KeySym key = XLookupKeysym(&zevent.xkey,0);
 	       do_func(screen, &zevent, key);
 	    }
 	    break;
@@ -273,7 +273,7 @@
       int iter=0;
       for (ScreenInfo*s2=screens+num_screens-1 ; s2>= screens ; s2--) {
          Window root_r;
-         unsigned int mask;
+         unsigned int mask = NoEventMask;
          int rx,ry;
          for (Window win_r = s2->root; iter<2; iter++)
          {
@@ -450,7 +450,10 @@
 	    current_screen->hist[current_screen->hist_index] = current_screen->area.pos;
 	 }
 	 if (thewt>230 && lock_command) {
-	    system(lock_command);
+	    int i = system(lock_command);
+	    if (i == 0 || i == -1)
+	       LOG_ERROR("Lock command system(%s) failed: %d \n", lock_command, i);
+
 	    thewt = 0;
 	 }
 #endif
Binary files sithwm-1.2.3/events.o and sithwm-1.2.3-patched/events.o differ
diff -burN sithwm-1.2.3/main.c sithwm-1.2.3-patched/main.c
--- sithwm-1.2.3/main.c	2008-04-14 22:01:28.000000000 +0200
+++ sithwm-1.2.3-patched/main.c	2022-11-11 12:17:49.046116714 +0100
@@ -15,6 +15,8 @@
 int	    font_height;
 unsigned int     numlockmask;
 
+Atom xa_wm_exit;
+Atom xa_wm_restart;
 Atom xa_wm_state;
 Atom xa_wm_protos;
 Atom xa_wm_delete;
@@ -41,8 +43,10 @@
    XSetErrorHandler(handle_xerror);
    /* XSynchronize(dpy, True); */
 
-   xa_wm_state = XInternAtom(dpy, "WM_STATE", False);
-   xa_wm_protos = XInternAtom(dpy, "WM_PROTOCOLS", False);
+   xa_wm_exit    = XInternAtom(dpy, "WM_EXIT"         , False);
+   xa_wm_restart = XInternAtom(dpy, "WM_RESTART"      , False);
+   xa_wm_state   = XInternAtom(dpy, "WM_STATE"        , False);
+   xa_wm_protos  = XInternAtom(dpy, "WM_PROTOCOLS"    , False);
    xa_wm_delete = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
 
    font = XLoadQueryFont(dpy, opt_font);
@@ -153,7 +157,7 @@
 
    for (char**aaa = argv;*(++aaa);) {
       if (aaa[0][0] != '-') {
-	 strncpy(global_buffer, aaa[0], sizeof global_buffer);
+	 strncpy(global_buffer, aaa[0], sizeof global_buffer - 1);
          parse_rc_line();
       }
    }
Binary files sithwm-1.2.3/main.o and sithwm-1.2.3-patched/main.o differ
diff -burN sithwm-1.2.3/menu.c sithwm-1.2.3-patched/menu.c
--- sithwm-1.2.3/menu.c	2022-11-11 16:02:41.902233180 +0100
+++ sithwm-1.2.3-patched/menu.c	2022-11-11 16:04:59.086224197 +0100
@@ -60,6 +60,8 @@
    { "circulate", FUNC_CIRCUL<<FUNC_SHIFT},
    { "hist", (FUNC_HIST<<FUNC_SHIFT)|FMOD_RAISE},
    { "view_hist", (FUNC_VIEW_HIST<<FUNC_SHIFT)|FMOD_RAISE},
+   { "exit", FUNC_EXIT<<FUNC_SHIFT},
+   { "restart", FUNC_RESTART<<FUNC_SHIFT},
    { "kill", FUNC_KILL<<FUNC_SHIFT},
    { "lower", FUNC_LOWER<<FUNC_SHIFT},
    { "enter", XACT_ENTER<<FUNC_SHIFT},
@@ -192,6 +194,17 @@
 	 c->dyn.area = c->hist[c->hist_index];
       break;
 #endif
+   case FUNC_EXIT: {
+      sendcmessage(DefaultRootWindow(dpy), xa_wm_exit, 0L, 1);
+      XSync(dpy, False);
+      exit(EXIT_SUCCESS);
+   }
+   case FUNC_RESTART: {
+      sendcmessage(DefaultRootWindow(dpy), xa_wm_restart, 0L, 1);
+      XSync(dpy, False);
+      exit(EXIT_SUCCESS);
+   }
+
    case FUNC_KILL: {
       int i, n, found = 0;
       Atom *protocols;
@@ -202,15 +215,10 @@
 	       found++;
 	 XFree(protocols);
       }
+
       if (found) {
-	 XEvent ev;
-	 ev.type = ClientMessage;
-	 ev.xclient.window = c->dyn.window;
-	 ev.xclient.message_type = xa_wm_protos;
-	 ev.xclient.format = 32;
-	 ev.xclient.data.l[0] = xa_wm_delete;
-	 ev.xclient.data.l[1] = CurrentTime;
-	 XSendEvent(dpy, c->dyn.window, False, NoEventMask, &ev);
+	 sendcmessage(c->dyn.window, xa_wm_protos, xa_wm_delete, 0);
+	 XSync(dpy, False);
       } else
 	 XKillClient(dpy, c->dyn.window);
    } break;
@@ -304,7 +312,7 @@
 
             if (t->mask>=(FUNC_SPAWN<<FUNC_SHIFT) && !strng
                 && z->mask>=(FUNC_SPAWN<<FUNC_SHIFT))
-               LOG_ERROR("Err, Not a mask:%s %s %p %p\n", tmp, strng, tmp, strng);
+               LOG_ERROR("Err, Not a mask:%s NULL %p %p\n", tmp, tmp, strng);
 	 }
       }
       if (!found) {
@@ -578,7 +586,7 @@
    char akey = 0;
    if (evnt) switch (evnt->type) {
    case KeyPress:
-      key = XKeycodeToKeysym(dpy, evnt->xkey.keycode, 0);
+      key = XLookupKeysym(&evnt->xkey, 0);
       char* sym=XKeysymToString(key);
       if (sym && sym[1] == 0 ) {
          akey = tolower(sym[0]);
Binary files sithwm-1.2.3/menu.o and sithwm-1.2.3-patched/menu.o differ
diff -burN sithwm-1.2.3/misc.c sithwm-1.2.3-patched/misc.c
--- sithwm-1.2.3/misc.c	2022-11-11 16:02:41.902233180 +0100
+++ sithwm-1.2.3-patched/misc.c	2022-11-11 12:35:10.773048500 +0100
@@ -21,11 +21,14 @@
             char *dot = strchr(colon, '.');
             if (!dot)
                dot = colon + strlen(colon);
-            snprintf(dot, 5, ".%ld", current_screen-screens);
+            snprintf(dot, strlen(dot), ".%d", (int8_t)(current_screen-screens));
             putenv(ebuf);
          }
 	 snprintf(global_buffer, sizeof global_buffer, "%s&", command);
-	 system(global_buffer);
+	 int i = system(global_buffer);
+	 if(i == 0 || i == -1)
+	 	LOG_ERROR("Global buffer system(%s) failed: %d \n", global_buffer, i);
+
       }
       _exit(0);
    }
@@ -93,3 +96,4 @@
    }
    return 0;
 }
+
Binary files sithwm-1.2.3/misc.o and sithwm-1.2.3-patched/misc.o differ
Binary files sithwm-1.2.3/screen.o and sithwm-1.2.3-patched/screen.o differ
Binary files sithwm-1.2.3/sithwm and sithwm-1.2.3-patched/sithwm differ
diff -burN sithwm-1.2.3/sithwm.h sithwm-1.2.3-patched/sithwm.h
--- sithwm-1.2.3/sithwm.h	2008-04-25 00:15:15.000000000 +0200
+++ sithwm-1.2.3-patched/sithwm.h	2022-11-11 11:07:38.147392451 +0100
@@ -138,6 +138,8 @@
 extern Atom xa_wm_state;
 extern Atom xa_wm_delete;
 extern Atom xa_wm_protos;
+extern Atom xa_wm_exit;
+extern Atom xa_wm_restart;
 
 /* Things that affect user interaction */
 
@@ -178,7 +180,6 @@
 void get_client_props(Client*client);
 
 enum {
-
    /* Functions, normally shifted left */
 
    /* this first group requires a focused window to work on */
@@ -191,10 +192,9 @@
 
    /* this group should work anyway, make sure FUNC_MENU is first */
    FUNC_MENU, FUNC_PAN, FUNC_NEXT_SCREEN,
-   FUNC_VIEW_HIST, FUNC_SPAWN,
+   FUNC_VIEW_HIST, FUNC_SPAWN, FUNC_EXIT, FUNC_RESTART,
 
-	/* Only for window actions so it dont matter where they
-           are placed. */
+   /* Only for window actions so it dont matter where they are placed. */
 	XACT_ENTER, XACT_NEW, XACT_DELETED,
 
 	FUNC_MAX,
@@ -213,6 +213,8 @@
 	FMOD_POPUP	= 0x800,
 };
 
+void sendcmessage(Window w, Atom a, long x, int isroot);
+void sendconfig(Client* c);
 void select_client(Client *c, unsigned int func);
 Client* select_window(Window w, unsigned int func);
 
diff -burN sithwm-1.2.3/xwmpid sithwm-1.2.3-patched/xwmpid
--- sithwm-1.2.3/xwmpid	1970-01-01 01:00:00.000000000 +0100
+++ sithwm-1.2.3-patched/xwmpid	2022-11-08 20:11:39.649537136 +0100
@@ -0,0 +1,10 @@
+#!/bin/sh
+ActiveWindowManagerPID()
+{
+	local windowManager="$1"
+	local windowManagerPIDs="$(pidof "$windowManager")"
+	local displayNumber="$(echo $DISPLAY | awk 'BEGIN { FS = "[:.]" } { print $2 }')"
+	ps e -p "$windowManagerPIDs" | awk -v n="$displayNumber" '$0 ~ " DISPLAY=:" n "[\n .]" { print $1 }'
+}
+
+echo "$(ActiveWindowManagerPID $1)"