1 //#define XINULATOR /* debug, simulates dual head */
2 /* See LICENSE file for copyright and license details.
4 * dynamic window manager is designed like any other X client as well. It is
5 * driven through handling X events. In contrast to other X clients, a window
6 * manager selects for SubstructureRedirectMask on the root window, to receive
7 * events about window (dis-)appearance. Only one X connection at a time is
8 * allowed to select for this event mask.
10 * The event handlers of dwm are organized in an array which is accessed
11 * whenever a new event has been fetched. This allows event dispatching
14 * Each child of the root window is called a client, except windows which have
15 * set the override_redirect flag. Clients are organized in a global
16 * linked client list, the focus history is remembered through a global
17 * stack list. Each client contains a bit array to indicate the tags of a
20 * Keys and tagging rules are organized as arrays and defined in config.h.
22 * To understand everything else, start reading main().
32 #include <sys/types.h>
34 #include <X11/cursorfont.h>
35 #include <X11/keysym.h>
36 #include <X11/Xatom.h>
38 #include <X11/Xproto.h>
39 #include <X11/Xutil.h>
41 #include <X11/extensions/Xinerama.h>
45 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
46 #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
47 #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
48 #define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
49 #define LENGTH(X) (sizeof X / sizeof X[0])
50 #define MAX(A, B) ((A) > (B) ? (A) : (B))
51 #define MIN(A, B) ((A) < (B) ? (A) : (B))
52 #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
53 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
54 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
55 #define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
56 #define TEXTW(X) (textnw(X, strlen(X)) + dc.font.height)
59 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
60 enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
61 enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
62 enum { WMProtocols, WMDelete, WMState, WMLast }; /* default atoms */
63 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
64 ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
77 void (*func)(const Arg *arg);
81 typedef struct Monitor Monitor;
82 typedef struct Client Client;
87 int basew, baseh, incw, inch, maxw, maxh, minw, minh;
90 Bool isfixed, isfloating, isurgent;
99 unsigned long norm[ColLast];
100 unsigned long sel[ColLast];
110 } DC; /* draw context */
115 void (*func)(const Arg *);
121 void (*arrange)(Monitor *);
127 int by, btx; /* bar geometry */
128 int my, mh; /* vertical screen size*/
129 int wx, wy, ww, wh; /* window area */
130 unsigned int seltags;
132 unsigned int tagset[2];
144 const char *instance;
150 /* function declarations */
151 static void applyrules(Client *c);
152 static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h);
153 static void arrange(void);
154 static void attach(Client *c);
155 static void attachstack(Client *c);
156 static void buttonpress(XEvent *e);
157 static void checkotherwm(void);
158 static void cleanup(void);
159 static void cleanupmons(void);
160 static void clearurgent(Client *c);
161 static void configure(Client *c);
162 static void configurenotify(XEvent *e);
163 static void configurerequest(XEvent *e);
164 static void destroynotify(XEvent *e);
165 static void detach(Client *c);
166 static void detachstack(Client *c);
167 static void die(const char *errstr, ...);
168 static void drawbar(Monitor *m);
169 static void drawbars(void);
170 static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
171 static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
172 static void enternotify(XEvent *e);
173 static void expose(XEvent *e);
174 static void focus(Client *c);
175 static void focusin(XEvent *e);
176 static void focusstack(const Arg *arg);
177 static Client *getclient(Window w);
178 static unsigned long getcolor(const char *colstr);
179 static Monitor *getmon(Window w);
180 static Monitor *getmonxy(int x, int y);
181 static Bool getrootpointer(int *x, int *y);
182 static long getstate(Window w);
183 static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
184 static void grabbuttons(Client *c, Bool focused);
185 static void grabkeys(void);
186 static void initfont(const char *fontstr);
187 static Bool isprotodel(Client *c);
188 static void keypress(XEvent *e);
189 static void killclient(const Arg *arg);
190 static void manage(Window w, XWindowAttributes *wa);
191 static void mappingnotify(XEvent *e);
192 static void maprequest(XEvent *e);
193 static void monocle(Monitor *m);
194 static void movemouse(const Arg *arg);
195 static Client *nexttiled(Client *c);
196 static void propertynotify(XEvent *e);
197 static void quit(const Arg *arg);
198 static void resize(Client *c, int x, int y, int w, int h);
199 static void resizemouse(const Arg *arg);
200 static void restack(Monitor *m);
201 static void run(void);
202 static void scan(void);
203 static void sendmon(Client *c, Monitor *m);
204 static void setclientstate(Client *c, long state);
205 static void setlayout(const Arg *arg);
206 static void setmfact(const Arg *arg);
207 static void setup(void);
208 static void showhide(Client *c);
209 static void sigchld(int signal);
210 static void spawn(const Arg *arg);
211 static void tag(const Arg *arg);
212 static int textnw(const char *text, unsigned int len);
213 static void tile(Monitor *);
214 static void togglebar(const Arg *arg);
215 static void togglefloating(const Arg *arg);
216 static void toggletag(const Arg *arg);
217 static void toggleview(const Arg *arg);
218 static void unfocus(Client *c);
219 static void unmanage(Client *c);
220 static void unmapnotify(XEvent *e);
221 static void updategeom(void);
222 static void updatebarpos(Monitor *m);
223 static void updatebars(void);
224 static void updatenumlockmask(void);
225 static void updatesizehints(Client *c);
226 static void updatestatus(void);
227 static void updatetitle(Client *c);
228 static void updatewmhints(Client *c);
229 static void view(const Arg *arg);
230 static int xerror(Display *dpy, XErrorEvent *ee);
231 static int xerrordummy(Display *dpy, XErrorEvent *ee);
232 static int xerrorstart(Display *dpy, XErrorEvent *ee);
233 static void zoom(const Arg *arg);
235 static void focusmon(const Arg *arg);
236 static void tagmon(const Arg *arg);
237 #endif /* XINERAMA */
240 static char stext[256];
242 static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
243 static int bh, blw = 0; /* bar geometry */
244 static int (*xerrorxlib)(Display *, XErrorEvent *);
245 static unsigned int numlockmask = 0;
246 static void (*handler[LASTEvent]) (XEvent *) = {
247 [ButtonPress] = buttonpress,
248 [ConfigureRequest] = configurerequest,
249 [ConfigureNotify] = configurenotify,
250 [DestroyNotify] = destroynotify,
251 [EnterNotify] = enternotify,
254 [KeyPress] = keypress,
255 [MappingNotify] = mappingnotify,
256 [MapRequest] = maprequest,
257 [PropertyNotify] = propertynotify,
258 [UnmapNotify] = unmapnotify
260 static Atom wmatom[WMLast], netatom[NetLast];
262 static Bool running = True;
263 static Cursor cursor[CurLast];
266 static Layout *lt[] = { NULL, NULL };
267 static Monitor *mons = NULL, *selmon = NULL;
269 /* configuration, allows nested code to access above variables */
272 /* compile-time check if all tags fit into an unsigned int bit array. */
273 struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
275 /* function implementations */
277 applyrules(Client *c) {
280 XClassHint ch = { 0 };
283 c->isfloating = c->tags = 0;
284 if(XGetClassHint(dpy, c->win, &ch)) {
285 for(i = 0; i < LENGTH(rules); i++) {
287 if((!r->title || strstr(c->name, r->title))
288 && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
289 && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
290 c->isfloating = r->isfloating;
299 c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
303 applysizehints(Client *c, int *x, int *y, int *w, int *h) {
306 /* set minimum possible */
314 if(*x + *w + 2 * c->bw < sx)
316 if(*y + *h + 2 * c->bw < sy)
323 if(resizehints || c->isfloating) {
324 /* see last two sentences in ICCCM 4.1.2.3 */
325 baseismin = c->basew == c->minw && c->baseh == c->minh;
327 if(!baseismin) { /* temporarily remove base dimensions */
332 /* adjust for aspect limits */
333 if(c->mina > 0 && c->maxa > 0) {
334 if(c->maxa < (float)*w / *h)
336 else if(c->mina < (float)*h / *w)
340 if(baseismin) { /* increment calculation requires this */
345 /* adjust for increment value */
351 /* restore base dimensions */
355 *w = MAX(*w, c->minw);
356 *h = MAX(*h, c->minh);
359 *w = MIN(*w, c->maxw);
362 *h = MIN(*h, c->maxh);
364 return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
371 /* optimise two loops into one, check focus(NULL) */
372 for(m = mons; m; m = m->next)
375 for(m = mons; m; m = m->next) {
376 if(lt[m->sellt]->arrange)
377 lt[m->sellt]->arrange(m);
384 c->next = c->mon->clients;
389 attachstack(Client *c) {
390 c->snext = c->mon->stack;
395 buttonpress(XEvent *e) {
396 unsigned int i, x, click;
400 XButtonPressedEvent *ev = &e->xbutton;
403 /* focus monitor if necessary */
404 if((m = getmon(ev->window)) && m != selmon) {
405 unfocus(selmon->sel);
409 if(ev->window == selmon->barwin && ev->x >= selmon->btx) {
414 while(ev->x >= x && ++i < LENGTH(tags));
415 if(i < LENGTH(tags)) {
419 else if(ev->x < x + blw)
421 else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
422 click = ClkStatusText;
426 else if((c = getclient(ev->window))) {
428 click = ClkClientWin;
431 for(i = 0; i < LENGTH(buttons); i++)
432 if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
433 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
434 buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
440 xerrorxlib = XSetErrorHandler(xerrorstart);
442 /* this causes an error if some other window manager is running */
443 XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
446 die("dwm: another window manager is already running\n");
447 XSetErrorHandler(xerror);
454 Layout foo = { "", NULL };
458 lt[selmon->sellt] = &foo;
460 /* TODO: consider simplifying cleanup code of the stack, perhaps do that in cleanmons() ? */
461 for(m = mons; m; m = m->next)
465 XFreeFontSet(dpy, dc.font.set);
467 XFreeFont(dpy, dc.font.xfont);
468 XUngrabKey(dpy, AnyKey, AnyModifier, root);
469 XFreePixmap(dpy, dc.drawable);
471 XFreeCursor(dpy, cursor[CurNormal]);
472 XFreeCursor(dpy, cursor[CurResize]);
473 XFreeCursor(dpy, cursor[CurMove]);
476 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
485 XUnmapWindow(dpy, mons->barwin);
486 XDestroyWindow(dpy, mons->barwin);
493 clearurgent(Client *c) {
497 if(!(wmh = XGetWMHints(dpy, c->win)))
499 wmh->flags &= ~XUrgencyHint;
500 XSetWMHints(dpy, c->win, wmh);
505 configure(Client *c) {
508 ce.type = ConfigureNotify;
516 ce.border_width = c->bw;
518 ce.override_redirect = False;
519 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
523 configurenotify(XEvent *e) {
525 XConfigureEvent *ev = &e->xconfigure;
527 if(ev->window == root && (ev->width != sw || ev->height != sh)) {
532 XFreePixmap(dpy, dc.drawable);
533 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
535 for(m = mons; m; m = m->next)
536 XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
542 configurerequest(XEvent *e) {
544 XConfigureRequestEvent *ev = &e->xconfigurerequest;
547 if((c = getclient(ev->window))) {
548 if(ev->value_mask & CWBorderWidth)
549 c->bw = ev->border_width;
550 else if(c->isfloating || !lt[selmon->sellt]->arrange) {
551 if(ev->value_mask & CWX)
553 if(ev->value_mask & CWY)
555 if(ev->value_mask & CWWidth)
557 if(ev->value_mask & CWHeight)
559 if((c->x - sx + c->w) > sw && c->isfloating)
560 c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
561 if((c->y - sy + c->h) > sh && c->isfloating)
562 c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
563 if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
566 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
574 wc.width = ev->width;
575 wc.height = ev->height;
576 wc.border_width = ev->border_width;
577 wc.sibling = ev->above;
578 wc.stack_mode = ev->detail;
579 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
585 destroynotify(XEvent *e) {
587 XDestroyWindowEvent *ev = &e->xdestroywindow;
589 if((c = getclient(ev->window)))
597 for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
602 detachstack(Client *c) {
605 for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
610 die(const char *errstr, ...) {
613 va_start(ap, errstr);
614 vfprintf(stderr, errstr, ap);
620 drawbar(Monitor *m) {
622 unsigned int i, occ = 0, urg = 0;
626 for(c = m->clients; c; c = c->next) {
636 buf[0] = m->screen_number + '0';
639 drawtext(buf, selmon == m ? dc.sel : dc.norm, True);
642 #endif /* XINERAMA */
644 for(i = 0; i < LENGTH(tags); i++) {
645 dc.w = TEXTW(tags[i]);
646 col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
647 drawtext(tags[i], col, urg & 1 << i);
648 drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
649 occ & 1 << i, urg & 1 << i, col);
654 drawtext(lt[m->sellt]->symbol, dc.norm, False);
659 if(m == selmon) { /* status is only drawn on selected monitor */
666 drawtext(stext, dc.norm, False);
671 if((dc.w = dc.x - x) > bh) {
674 col = m == selmon ? dc.sel : dc.norm;
675 drawtext(m->sel->name, col, False);
676 drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
679 drawtext(NULL, dc.norm, False);
681 XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
689 for(m = mons; m; m = m->next)
694 drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
697 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
699 gcv.foreground = col[invert ? ColBG : ColFG];
700 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
701 x = (dc.font.ascent + dc.font.descent + 2) / 4;
705 r.width = r.height = x + 1;
706 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
709 r.width = r.height = x;
710 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
715 drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
717 int i, x, y, h, len, olen;
718 XRectangle r = { dc.x, dc.y, dc.w, dc.h };
720 XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
721 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
725 h = dc.font.ascent + dc.font.descent;
726 y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
728 /* shorten text if necessary */
729 for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
732 memcpy(buf, text, len);
734 for(i = len; i && i > len - 3; buf[--i] = '.');
735 XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
737 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
739 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
743 enternotify(XEvent *e) {
746 XCrossingEvent *ev = &e->xcrossing;
748 if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
750 if((m = getmon(ev->window)) && m != selmon) {
751 unfocus(selmon->sel);
754 if((c = getclient(ev->window)))
763 XExposeEvent *ev = &e->xexpose;
765 if(ev->count == 0 && (m = getmon(ev->window)))
771 if(!c || !ISVISIBLE(c))
772 for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
774 unfocus(selmon->sel);
782 grabbuttons(c, True);
783 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
784 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
787 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
793 focusin(XEvent *e) { /* there are some broken focus acquiring clients */
794 XFocusChangeEvent *ev = &e->xfocus;
796 if(selmon->sel && ev->window != selmon->sel->win)
797 XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
802 focusmon(const Arg *arg) {
806 for(i = 0, m = mons; m; m = m->next, i++)
810 unfocus(selmon->sel);
816 #endif /* XINERAMA */
819 focusstack(const Arg *arg) {
820 Client *c = NULL, *i;
825 for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
827 for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
830 for(i = selmon->clients; i != selmon->sel; i = i->next)
834 for(; i; i = i->next)
845 getclient(Window w) {
849 for(m = mons; m; m = m->next)
850 for(c = m->clients; c; c = c->next)
857 getcolor(const char *colstr) {
858 Colormap cmap = DefaultColormap(dpy, screen);
861 if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
862 die("error, cannot allocate color '%s'\n", colstr);
872 if(w == root && getrootpointer(&x, &y))
873 return getmonxy(x, y);
874 for(m = mons; m; m = m->next)
877 if((c = getclient(w)))
883 getmonxy(int x, int y) {
886 for(m = mons; m; m = m->next)
887 if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
893 getrootpointer(int *x, int *y) {
897 return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
904 unsigned char *p = NULL;
905 unsigned long n, extra;
908 status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
909 &real, &format, &n, &extra, (unsigned char **)&p);
910 if(status != Success)
919 gettextprop(Window w, Atom atom, char *text, unsigned int size) {
924 if(!text || size == 0)
927 XGetTextProperty(dpy, w, &name, atom);
930 if(name.encoding == XA_STRING)
931 strncpy(text, (char *)name.value, size - 1);
933 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
935 strncpy(text, *list, size - 1);
936 XFreeStringList(list);
939 text[size - 1] = '\0';
945 grabbuttons(Client *c, Bool focused) {
949 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
950 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
952 for(i = 0; i < LENGTH(buttons); i++)
953 if(buttons[i].click == ClkClientWin)
954 for(j = 0; j < LENGTH(modifiers); j++)
955 XGrabButton(dpy, buttons[i].button,
956 buttons[i].mask | modifiers[j],
957 c->win, False, BUTTONMASK,
958 GrabModeAsync, GrabModeSync, None, None);
960 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
961 BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
970 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
973 XUngrabKey(dpy, AnyKey, AnyModifier, root);
974 for(i = 0; i < LENGTH(keys); i++) {
975 if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
976 for(j = 0; j < LENGTH(modifiers); j++)
977 XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
978 True, GrabModeAsync, GrabModeAsync);
984 initfont(const char *fontstr) {
985 char *def, **missing;
989 dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
992 fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
993 XFreeStringList(missing);
996 XFontSetExtents *font_extents;
997 XFontStruct **xfonts;
999 dc.font.ascent = dc.font.descent = 0;
1000 font_extents = XExtentsOfFontSet(dc.font.set);
1001 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
1002 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
1003 dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
1004 dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
1009 if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
1010 && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
1011 die("error, cannot load font: '%s'\n", fontstr);
1012 dc.font.ascent = dc.font.xfont->ascent;
1013 dc.font.descent = dc.font.xfont->descent;
1015 dc.font.height = dc.font.ascent + dc.font.descent;
1019 isprotodel(Client *c) {
1024 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
1025 for(i = 0; !ret && i < n; i++)
1026 if(protocols[i] == wmatom[WMDelete])
1034 keypress(XEvent *e) {
1040 keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1041 for(i = 0; i < LENGTH(keys); i++)
1042 if(keysym == keys[i].keysym
1043 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1045 keys[i].func(&(keys[i].arg));
1049 killclient(const Arg *arg) {
1054 if(isprotodel(selmon->sel)) {
1055 ev.type = ClientMessage;
1056 ev.xclient.window = selmon->sel->win;
1057 ev.xclient.message_type = wmatom[WMProtocols];
1058 ev.xclient.format = 32;
1059 ev.xclient.data.l[0] = wmatom[WMDelete];
1060 ev.xclient.data.l[1] = CurrentTime;
1061 XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
1064 XKillClient(dpy, selmon->sel->win);
1068 manage(Window w, XWindowAttributes *wa) {
1070 Client *c, *t = NULL;
1071 Window trans = None;
1074 if(!(c = malloc(sizeof(Client))))
1075 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
1085 c->oldbw = wa->border_width;
1086 if(c->w == sw && c->h == sh) {
1092 if(c->x + WIDTH(c) > sx + sw)
1093 c->x = sx + sw - WIDTH(c);
1094 if(c->y + HEIGHT(c) > sy + sh)
1095 c->y = sy + sh - HEIGHT(c);
1096 c->x = MAX(c->x, sx);
1097 /* only fix client y-offset, if the client center might cover the bar */
1098 c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
1099 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : sy);
1103 wc.border_width = c->bw;
1104 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1105 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
1106 configure(c); /* propagates border_width, if size doesn't change */
1108 XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1109 grabbuttons(c, False);
1111 if(XGetTransientForHint(dpy, w, &trans))
1112 t = getclient(trans);
1118 c->isfloating = trans != None || c->isfixed;
1120 XRaiseWindow(dpy, c->win);
1123 XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1124 XMapWindow(dpy, c->win);
1125 setclientstate(c, NormalState);
1130 mappingnotify(XEvent *e) {
1131 XMappingEvent *ev = &e->xmapping;
1133 XRefreshKeyboardMapping(ev);
1134 if(ev->request == MappingKeyboard)
1139 maprequest(XEvent *e) {
1140 static XWindowAttributes wa;
1141 XMapRequestEvent *ev = &e->xmaprequest;
1143 if(!XGetWindowAttributes(dpy, ev->window, &wa))
1145 if(wa.override_redirect)
1147 if(!getclient(ev->window))
1148 manage(ev->window, &wa);
1152 monocle(Monitor *m) {
1155 for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
1156 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw);
1160 movemouse(const Arg *arg) {
1161 int x, y, ocx, ocy, nx, ny;
1166 if(!(c = selmon->sel))
1171 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1172 None, cursor[CurMove], CurrentTime) != GrabSuccess)
1174 if(!getrootpointer(&x, &y))
1177 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1179 case ConfigureRequest:
1182 handler[ev.type](&ev);
1185 nx = ocx + (ev.xmotion.x - x);
1186 ny = ocy + (ev.xmotion.y - y);
1187 if(snap && nx >= selmon->wx && nx <= selmon->wx + selmon->ww
1188 && ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
1189 if(abs(selmon->wx - nx) < snap)
1191 else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1192 nx = selmon->wx + selmon->ww - WIDTH(c);
1193 if(abs(selmon->wy - ny) < snap)
1195 else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1196 ny = selmon->wy + selmon->wh - HEIGHT(c);
1197 if(!c->isfloating && lt[selmon->sellt]->arrange
1198 && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1199 togglefloating(NULL);
1201 if(!lt[selmon->sellt]->arrange || c->isfloating)
1202 resize(c, nx, ny, c->w, c->h);
1206 while(ev.type != ButtonRelease);
1207 XUngrabPointer(dpy, CurrentTime);
1208 if((m = getmonxy(c->x + c->w / 2, c->y + c->h / 2)) != selmon)
1213 nexttiled(Client *c) {
1214 for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1219 propertynotify(XEvent *e) {
1222 XPropertyEvent *ev = &e->xproperty;
1224 if((ev->window == root) && (ev->atom == XA_WM_NAME))
1226 else if(ev->state == PropertyDelete)
1227 return; /* ignore */
1228 else if((c = getclient(ev->window))) {
1231 case XA_WM_TRANSIENT_FOR:
1232 XGetTransientForHint(dpy, c->win, &trans);
1233 if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
1236 case XA_WM_NORMAL_HINTS:
1244 if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1246 if(c == selmon->sel)
1253 quit(const Arg *arg) {
1258 resize(Client *c, int x, int y, int w, int h) {
1261 if(applysizehints(c, &x, &y, &w, &h)) {
1264 c->w = wc.width = w;
1265 c->h = wc.height = h;
1266 wc.border_width = c->bw;
1267 XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1274 resizemouse(const Arg *arg) {
1281 if(!(c = selmon->sel))
1286 if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1287 None, cursor[CurResize], CurrentTime) != GrabSuccess)
1289 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1291 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1293 case ConfigureRequest:
1296 handler[ev.type](&ev);
1299 nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1300 nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1302 if(snap && nw >= selmon->wx && nw <= selmon->wx + selmon->ww
1303 && nh >= selmon->wy && nh <= selmon->wy + selmon->wh) {
1304 if(!c->isfloating && lt[selmon->sellt]->arrange
1305 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1306 togglefloating(NULL);
1308 if(!lt[selmon->sellt]->arrange || c->isfloating)
1309 resize(c, c->x, c->y, nw, nh);
1313 while(ev.type != ButtonRelease);
1314 XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1315 XUngrabPointer(dpy, CurrentTime);
1316 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1317 if((m = getmonxy(c->x + c->w / 2, c->y + c->h / 2)) != selmon)
1322 restack(Monitor *m) {
1330 if(m->sel->isfloating || !lt[m->sellt]->arrange)
1331 XRaiseWindow(dpy, m->sel->win);
1332 if(lt[m->sellt]->arrange) {
1333 wc.stack_mode = Below;
1334 wc.sibling = m->barwin;
1335 for(c = m->stack; c; c = c->snext)
1336 if(!c->isfloating && ISVISIBLE(c)) {
1337 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1338 wc.sibling = c->win;
1342 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1349 /* main event loop */
1351 while(running && !XNextEvent(dpy, &ev)) {
1352 if(handler[ev.type])
1353 (handler[ev.type])(&ev); /* call handler */
1359 unsigned int i, num;
1360 Window d1, d2, *wins = NULL;
1361 XWindowAttributes wa;
1363 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1364 for(i = 0; i < num; i++) {
1365 if(!XGetWindowAttributes(dpy, wins[i], &wa)
1366 || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1368 if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1369 manage(wins[i], &wa);
1371 for(i = 0; i < num; i++) { /* now the transients */
1372 if(!XGetWindowAttributes(dpy, wins[i], &wa))
1374 if(XGetTransientForHint(dpy, wins[i], &d1)
1375 && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1376 manage(wins[i], &wa);
1384 sendmon(Client *c, Monitor *m) {
1390 c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1398 setclientstate(Client *c, long state) {
1399 long data[] = {state, None};
1401 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1402 PropModeReplace, (unsigned char *)data, 2);
1406 setlayout(const Arg *arg) {
1407 if(!arg || !arg->v || arg->v != lt[selmon->sellt])
1410 lt[selmon->sellt] = (Layout *)arg->v;
1417 /* arg > 1.0 will set mfact absolutly */
1419 setmfact(const Arg *arg) {
1422 if(!arg || !lt[selmon->sellt]->arrange)
1424 f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1425 if(f < 0.1 || f > 0.9)
1435 XSetWindowAttributes wa;
1438 screen = DefaultScreen(dpy);
1439 root = RootWindow(dpy, screen);
1443 sw = DisplayWidth(dpy, screen);
1444 sh = DisplayHeight(dpy, screen);
1445 bh = dc.h = dc.font.height + 2;
1446 lt[0] = &layouts[0];
1447 lt[1] = &layouts[1 % LENGTH(layouts)];
1451 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1452 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1453 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1454 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1455 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1458 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
1459 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
1460 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
1462 /* init appearance */
1463 dc.norm[ColBorder] = getcolor(normbordercolor);
1464 dc.norm[ColBG] = getcolor(normbgcolor);
1465 dc.norm[ColFG] = getcolor(normfgcolor);
1466 dc.sel[ColBorder] = getcolor(selbordercolor);
1467 dc.sel[ColBG] = getcolor(selbgcolor);
1468 dc.sel[ColFG] = getcolor(selfgcolor);
1469 dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
1470 dc.gc = XCreateGC(dpy, root, 0, NULL);
1471 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
1473 XSetFont(dpy, dc.gc, dc.font.xfont->fid);
1476 for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
1477 w = TEXTW(layouts[i].symbol);
1483 /* EWMH support per view */
1484 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1485 PropModeReplace, (unsigned char *) netatom, NetLast);
1487 /* select for events */
1488 wa.cursor = cursor[CurNormal];
1489 wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
1490 |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
1491 |PropertyChangeMask;
1492 XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1493 XSelectInput(dpy, root, wa.event_mask);
1499 showhide(Client *c) {
1502 if(ISVISIBLE(c)) { /* show clients top down */
1503 XMoveWindow(dpy, c->win, c->x, c->y);
1504 if(!lt[c->mon->sellt]->arrange || c->isfloating)
1505 resize(c, c->x, c->y, c->w, c->h);
1508 else { /* hide clients bottom up */
1510 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
1516 sigchld(int signal) {
1517 while(0 < waitpid(-1, NULL, WNOHANG));
1521 spawn(const Arg *arg) {
1522 signal(SIGCHLD, sigchld);
1525 close(ConnectionNumber(dpy));
1527 execvp(((char **)arg->v)[0], (char **)arg->v);
1528 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1535 tag(const Arg *arg) {
1536 if(selmon->sel && arg->ui & TAGMASK) {
1537 selmon->sel->tags = arg->ui & TAGMASK;
1544 tagmon(const Arg *arg) {
1549 if(!(c = selmon->sel))
1551 for(i = 0, m = mons; m; m = m->next, i++)
1557 #endif /* XINERAMA */
1560 textnw(const char *text, unsigned int len) {
1564 XmbTextExtents(dc.font.set, text, len, NULL, &r);
1567 return XTextWidth(dc.font.xfont, text, len);
1576 for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1581 c = nexttiled(m->clients);
1582 mw = m->mfact * m->ww;
1583 resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw);
1589 x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
1591 w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
1596 for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
1597 resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
1598 ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw));
1600 y = c->y + HEIGHT(c);
1605 togglebar(const Arg *arg) {
1606 selmon->showbar = !selmon->showbar;
1607 updatebarpos(selmon);
1608 XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
1613 togglefloating(const Arg *arg) {
1616 selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1617 if(selmon->sel->isfloating)
1618 resize(selmon->sel, selmon->sel->x, selmon->sel->y, selmon->sel->w, selmon->sel->h);
1623 toggletag(const Arg *arg) {
1629 mask = selmon->sel->tags ^ (arg->ui & TAGMASK);
1631 selmon->sel->tags = mask;
1637 toggleview(const Arg *arg) {
1638 unsigned int mask = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1641 selmon->tagset[selmon->seltags] = mask;
1647 unfocus(Client *c) {
1650 grabbuttons(c, False);
1651 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
1652 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1656 unmanage(Client *c) {
1659 wc.border_width = c->oldbw;
1660 /* The server grab construct avoids race conditions. */
1662 XSetErrorHandler(xerrordummy);
1663 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1666 if(c->mon->sel == c) {
1667 /* TODO: consider separate the next code into a function or into detachstack? */
1669 for(tc = c->mon->stack; tc && !ISVISIBLE(tc); tc = tc->snext);
1673 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1674 setclientstate(c, WithdrawnState);
1677 XSetErrorHandler(xerror);
1683 unmapnotify(XEvent *e) {
1685 XUnmapEvent *ev = &e->xunmap;
1687 if((c = getclient(ev->window)))
1694 XSetWindowAttributes wa;
1696 wa.override_redirect = True;
1697 wa.background_pixmap = ParentRelative;
1698 wa.event_mask = ButtonPressMask|ExposureMask;
1700 for(m = mons; m; m = m->next) {
1701 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
1703 CopyFromParent, DefaultVisual(dpy, screen),
1704 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
1705 XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
1706 XMapRaised(dpy, m->barwin);
1711 updatebarpos(Monitor *m) {
1716 m->by = m->topbar ? m->wy : m->wy + m->wh;
1717 m->wy = m->topbar ? m->wy + bh : m->wy;
1727 Monitor *newmons = NULL, *m, *tm;
1731 #elif defined(XINERAMA)
1732 XineramaScreenInfo *info = NULL;
1734 if(XineramaIsActive(dpy))
1735 info = XineramaQueryScreens(dpy, &n);
1737 /* allocate monitor(s) for the new geometry setup */
1738 for(i = 0; i < n; i++) {
1739 m = (Monitor *)malloc(sizeof(Monitor));
1744 /* initialise monitor(s) */
1748 m->screen_number = 0;
1752 m->mh = m->wh = sh / 2;
1754 m->screen_number = 1;
1756 m->my = m->wy = sy + sh / 2;
1758 m->mh = m->wh = sh / 2;
1761 #elif defined(XINERAMA)
1762 if(XineramaIsActive(dpy)) {
1763 for(i = 0, m = newmons; m; m = m->next, i++) {
1764 m->screen_number = info[i].screen_number;
1765 m->wx = info[i].x_org;
1766 m->my = m->wy = info[i].y_org;
1767 m->ww = info[i].width;
1768 m->mh = m->wh = info[i].height;
1774 /* default monitor setup */
1776 m->screen_number = 0;
1783 /* bar geometry setup */
1784 for(m = newmons; m; m = m->next) {
1785 /* TODO: consider removing the following values from config.h */
1791 m->tagset[0] = m->tagset[1] = 1;
1793 m->showbar = showbar;
1798 /* reassign left over clients of disappeared monitors */
1799 for(tm = mons; tm; tm = tm->next)
1800 while(tm->clients) {
1802 tm->clients = c->next;
1809 /* select focused monitor */
1812 selmon = getmon(root);
1816 updatenumlockmask(void) {
1818 XModifierKeymap *modmap;
1821 modmap = XGetModifierMapping(dpy);
1822 for(i = 0; i < 8; i++)
1823 for(j = 0; j < modmap->max_keypermod; j++)
1824 if(modmap->modifiermap[i * modmap->max_keypermod + j]
1825 == XKeysymToKeycode(dpy, XK_Num_Lock))
1826 numlockmask = (1 << i);
1827 XFreeModifiermap(modmap);
1831 updatesizehints(Client *c) {
1835 if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
1836 /* size is uninitialized, ensure that size.flags aren't used */
1838 if(size.flags & PBaseSize) {
1839 c->basew = size.base_width;
1840 c->baseh = size.base_height;
1842 else if(size.flags & PMinSize) {
1843 c->basew = size.min_width;
1844 c->baseh = size.min_height;
1847 c->basew = c->baseh = 0;
1848 if(size.flags & PResizeInc) {
1849 c->incw = size.width_inc;
1850 c->inch = size.height_inc;
1853 c->incw = c->inch = 0;
1854 if(size.flags & PMaxSize) {
1855 c->maxw = size.max_width;
1856 c->maxh = size.max_height;
1859 c->maxw = c->maxh = 0;
1860 if(size.flags & PMinSize) {
1861 c->minw = size.min_width;
1862 c->minh = size.min_height;
1864 else if(size.flags & PBaseSize) {
1865 c->minw = size.base_width;
1866 c->minh = size.base_height;
1869 c->minw = c->minh = 0;
1870 if(size.flags & PAspect) {
1871 c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
1872 c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
1875 c->maxa = c->mina = 0.0;
1876 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
1877 && c->maxw == c->minw && c->maxh == c->minh);
1881 updatetitle(Client *c) {
1882 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
1883 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
1887 updatestatus(void) {
1888 if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
1889 strcpy(stext, "dwm-"VERSION);
1894 updatewmhints(Client *c) {
1897 if((wmh = XGetWMHints(dpy, c->win))) {
1898 if(c == selmon->sel && wmh->flags & XUrgencyHint) {
1899 wmh->flags &= ~XUrgencyHint;
1900 XSetWMHints(dpy, c->win, wmh);
1903 c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
1910 view(const Arg *arg) {
1911 if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
1913 selmon->seltags ^= 1; /* toggle sel tagset */
1914 if(arg->ui & TAGMASK)
1915 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
1919 /* There's no way to check accesses to destroyed windows, thus those cases are
1920 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
1921 * default error handler, which may call exit. */
1923 xerror(Display *dpy, XErrorEvent *ee) {
1924 if(ee->error_code == BadWindow
1925 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
1926 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
1927 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
1928 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
1929 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
1930 || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
1931 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
1932 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
1934 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
1935 ee->request_code, ee->error_code);
1936 return xerrorxlib(dpy, ee); /* may call exit */
1940 xerrordummy(Display *dpy, XErrorEvent *ee) {
1944 /* Startup Error handler to check if another window manager
1945 * is already running. */
1947 xerrorstart(Display *dpy, XErrorEvent *ee) {
1953 zoom(const Arg *arg) {
1954 Client *c = selmon->sel;
1956 if(!lt[selmon->sellt]->arrange || lt[selmon->sellt]->arrange == monocle || (selmon->sel && selmon->sel->isfloating))
1958 if(c == nexttiled(selmon->clients))
1959 if(!c || !(c = nexttiled(c->next)))
1968 main(int argc, char *argv[]) {
1969 if(argc == 2 && !strcmp("-v", argv[1]))
1970 die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
1972 die("usage: dwm [-v]\n");
1974 if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
1975 fputs("warning: no locale support\n", stderr);
1977 if(!(dpy = XOpenDisplay(NULL)))
1978 die("dwm: cannot open display\n");