components/keyboard_indicators.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdio.h>
   3 #include <X11/Xlib.h>
   4
   5 #include "../util.h"
   6
   7 const char *
   8 keyboard_indicators(void)
   9 {
  10         Display *dpy;
  11         XKeyboardState state;
  12
  13         if (!(dpy = XOpenDisplay(NULL))) {
  14                 fprintf(stderr, "Cannot open display\n");
  15                 return NULL;
  16         }
  17         XGetKeyboardControl(dpy, &state);
  18         XCloseDisplay(dpy);
  19
  20         switch (state.led_mask) {
  21         case 1:
  22                 return "c";
  23         case 2:
  24                 return "n";
  25         case 3:
  26                 return "cn";
  27         default:
  28                 return "";
  29         }
  30 }