Mercurial > aewl
annotate main.c @ 162:a6a31e485fbd
dwm is now exit, if stdin is closed due broken pipe
| author | arg@10ksloc.org |
|---|---|
| date | Wed, 02 Aug 2006 12:33:24 +0200 |
| parents | 93012e947eae |
| children | 21071ae1fe68 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> | |
| 3 * See LICENSE file for license details. | |
| 4 */ | |
| 5 | |
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6 #include "dwm.h" |
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7 |
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8 #include <errno.h> |
| 0 | 9 #include <stdio.h> |
| 10 #include <stdlib.h> | |
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11 #include <string.h> |
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12 #include <unistd.h> |
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13 #include <sys/select.h> |
| 0 | 14 #include <X11/cursorfont.h> |
| 15 #include <X11/Xatom.h> | |
| 16 #include <X11/Xproto.h> | |
| 17 | |
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18 |
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19 /* static */ |
| 0 | 20 |
| 123 | 21 static int (*xerrorxlib)(Display *, XErrorEvent *); |
| 75 | 22 static Bool otherwm; |
| 0 | 23 |
| 24 static void | |
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25 cleanup() |
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26 { |
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27 while(sel) { |
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28 resize(sel, True, TopLeft); |
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29 unmanage(sel); |
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30 } |
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31 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); |
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32 } |
| 0 | 33 |
| 34 static void | |
| 75 | 35 scan() |
| 0 | 36 { |
| 37 unsigned int i, num; | |
| 123 | 38 Window *wins, d1, d2; |
| 0 | 39 XWindowAttributes wa; |
| 40 | |
| 41 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { | |
| 42 for(i = 0; i < num; i++) { | |
| 43 if(!XGetWindowAttributes(dpy, wins[i], &wa)) | |
| 44 continue; | |
| 45 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) | |
| 46 continue; | |
| 47 if(wa.map_state == IsViewable) | |
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48 manage(wins[i], &wa); |
| 0 | 49 } |
| 50 } | |
| 51 if(wins) | |
| 52 XFree(wins); | |
| 53 } | |
| 54 | |
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55 static int |
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56 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop) |
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57 { |
| 123 | 58 int status, format; |
| 59 unsigned long res, extra; | |
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60 Atom real; |
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61 |
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62 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format, |
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63 &res, &extra, prop); |
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64 |
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65 if(status != Success || *prop == 0) { |
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66 return 0; |
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67 } |
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68 if(res == 0) { |
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69 free((void *) *prop); |
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70 } |
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71 return res; |
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72 } |
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73 |
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74 /* |
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75 * Startup Error handler to check if another window manager |
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76 * is already running. |
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77 */ |
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78 static int |
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79 xerrorstart(Display *dsply, XErrorEvent *ee) |
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80 { |
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81 otherwm = True; |
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82 return -1; |
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83 } |
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84 |
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85 /* extern */ |
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86 |
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87 char stext[1024]; |
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88 int tsel = DEFTAG; |
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89 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw; |
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90 Atom wmatom[WMLast], netatom[NetLast]; |
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91 Bool running = True; |
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92 Bool issel = True; |
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93 Client *clients = NULL; |
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94 Client *sel = NULL; |
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95 Cursor cursor[CurLast]; |
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96 Display *dpy; |
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97 DC dc = {0}; |
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98 Window root, barwin; |
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99 |
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100 int |
| 75 | 101 getproto(Window w) |
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102 { |
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103 int protos = 0; |
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104 int i; |
| 123 | 105 long res; |
| 106 unsigned char *protocols; | |
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107 |
| 77 | 108 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols); |
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109 if(res <= 0) { |
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110 return protos; |
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111 } |
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112 for(i = 0; i < res; i++) { |
| 77 | 113 if(protocols[i] == wmatom[WMDelete]) |
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114 protos |= PROTODELWIN; |
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115 } |
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116 free((char *) protocols); |
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117 return protos; |
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118 } |
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119 |
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120 void |
| 74 | 121 sendevent(Window w, Atom a, long value) |
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122 { |
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123 XEvent e; |
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124 |
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125 e.type = ClientMessage; |
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126 e.xclient.window = w; |
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127 e.xclient.message_type = a; |
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128 e.xclient.format = 32; |
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129 e.xclient.data.l[0] = value; |
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130 e.xclient.data.l[1] = CurrentTime; |
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131 XSendEvent(dpy, w, False, NoEventMask, &e); |
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132 XSync(dpy, False); |
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133 } |
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134 |
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135 void |
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136 quit(Arg *arg) |
| 75 | 137 { |
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138 running = False; |
| 75 | 139 } |
| 140 | |
| 141 /* | |
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142 * There's no way to check accesses to destroyed windows, thus those cases are |
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143 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs |
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144 * default error handler, which calls exit(). |
| 0 | 145 */ |
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146 int |
| 75 | 147 xerror(Display *dpy, XErrorEvent *ee) |
| 0 | 148 { |
| 75 | 149 if(ee->error_code == BadWindow |
| 123 | 150 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch) |
| 151 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable) | |
| 152 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable) | |
| 153 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable) | |
| 154 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch) | |
| 155 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)) | |
| 0 | 156 return 0; |
| 34 | 157 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n", |
| 123 | 158 ee->request_code, ee->error_code); |
| 75 | 159 return xerrorxlib(dpy, ee); /* may call exit() */ |
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160 } |
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161 |
| 0 | 162 int |
| 163 main(int argc, char *argv[]) | |
| 164 { | |
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165 int i; |
| 123 | 166 unsigned int mask; |
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167 fd_set rd; |
| 0 | 168 Window w; |
| 5 | 169 XEvent ev; |
| 123 | 170 XSetWindowAttributes wa; |
| 0 | 171 |
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172 if(argc == 2 && !strncmp("-v", argv[1], 3)) { |
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173 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout); |
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174 exit(EXIT_SUCCESS); |
| 0 | 175 } |
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176 else if(argc != 1) |
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177 eprint("usage: dwm [-v]\n"); |
| 0 | 178 |
| 179 dpy = XOpenDisplay(0); | |
| 180 if(!dpy) | |
| 75 | 181 eprint("dwm: cannot connect X server\n"); |
| 0 | 182 |
| 183 screen = DefaultScreen(dpy); | |
| 184 root = RootWindow(dpy, screen); | |
| 185 | |
| 186 /* check if another WM is already running */ | |
| 75 | 187 otherwm = False; |
| 188 XSetErrorHandler(xerrorstart); | |
| 0 | 189 /* this causes an error if some other WM is running */ |
| 190 XSelectInput(dpy, root, SubstructureRedirectMask); | |
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191 XSync(dpy, False); |
| 0 | 192 |
| 75 | 193 if(otherwm) |
| 194 eprint("dwm: another window manager is already running\n"); | |
| 0 | 195 |
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196 XSetErrorHandler(NULL); |
| 75 | 197 xerrorxlib = XSetErrorHandler(xerror); |
| 0 | 198 |
| 199 /* init atoms */ | |
| 77 | 200 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); |
| 201 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); | |
| 202 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); | |
| 203 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); | |
| 204 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32, | |
| 205 PropModeReplace, (unsigned char *) netatom, NetLast); | |
| 0 | 206 |
| 207 /* init cursors */ | |
| 208 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); | |
| 209 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); | |
| 210 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); | |
| 211 | |
| 73 | 212 grabkeys(); |
| 0 | 213 |
| 5 | 214 /* style */ |
| 74 | 215 dc.bg = getcolor(BGCOLOR); |
| 216 dc.fg = getcolor(FGCOLOR); | |
| 217 dc.border = getcolor(BORDERCOLOR); | |
| 218 setfont(FONT); | |
| 5 | 219 |
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220 sx = sy = 0; |
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221 sw = DisplayWidth(dpy, screen); |
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222 sh = DisplayHeight(dpy, screen); |
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223 mw = (sw * MASTERW) / 100; |
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224 |
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225 wa.override_redirect = 1; |
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226 wa.background_pixmap = ParentRelative; |
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227 wa.event_mask = ButtonPressMask | ExposureMask; |
| 5 | 228 |
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229 bx = by = 0; |
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230 bw = sw; |
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231 dc.h = bh = dc.font.height + 4; |
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232 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen), |
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233 CopyFromParent, DefaultVisual(dpy, screen), |
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234 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa); |
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235 XDefineCursor(dpy, barwin, cursor[CurNormal]); |
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236 XMapRaised(dpy, barwin); |
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237 |
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238 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); |
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239 dc.gc = XCreateGC(dpy, root, 0, 0); |
| 74 | 240 drawstatus(); |
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241 |
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242 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); |
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243 |
| 123 | 244 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask; |
| 0 | 245 wa.cursor = cursor[CurNormal]; |
| 246 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); | |
| 247 | |
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248 strcpy(stext, "dwm-"VERSION); |
| 75 | 249 scan(); |
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250 |
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251 /* main event loop, reads status text from stdin as well */ |
| 5 | 252 while(running) { |
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253 FD_ZERO(&rd); |
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254 FD_SET(STDIN_FILENO, &rd); |
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255 FD_SET(ConnectionNumber(dpy), &rd); |
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256 |
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257 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0); |
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258 if(i == -1 && errno == EINTR) |
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259 continue; |
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260 if(i < 0) |
| 75 | 261 eprint("select failed\n"); |
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262 else if(i > 0) { |
| 64 | 263 if(FD_ISSET(ConnectionNumber(dpy), &rd)) { |
| 264 while(XPending(dpy)) { | |
| 265 XNextEvent(dpy, &ev); | |
| 266 if(handler[ev.type]) | |
| 267 (handler[ev.type])(&ev); /* call handler */ | |
| 268 } | |
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269 } |
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270 if(FD_ISSET(STDIN_FILENO, &rd)) { |
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271 if(!fgets(stext, sizeof(stext), stdin)) |
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272 break; |
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273 else |
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274 stext[strlen(stext) - 1] = 0; |
| 74 | 275 drawstatus(); |
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276 } |
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277 } |
| 5 | 278 } |
| 0 | 279 |
| 280 cleanup(); | |
| 281 XCloseDisplay(dpy); | |
| 282 | |
| 283 return 0; | |
| 284 } |