softwedge.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <ctype.h>
   5 #include <X11/Xlib.h>
   6 #include <X11/Xutil.h>
   7 #include <X11/extensions/XTest.h>
   8 #include <X11/keysymdef.h>
   9
  10
  11 void key_press(Display *dpy, unsigned char letter) {
  12   unsigned int shiftcode = XKeysymToKeycode(dpy, XStringToKeysym("Shift_L"));
  13
  14   char s[2];
  15   s[0] = letter;
  16   s[1] = 0;
  17   KeySym sym = XStringToKeysym(s);
  18   KeyCode keycode = XKeysymToKeycode(dpy, sym);
  19
  20   if (isupper(letter))
  21     XTestFakeKeyEvent(dpy, shiftcode, True, 0);
  22
  23   XTestFakeKeyEvent(dpy, keycode, True, 0);
  24   XTestFakeKeyEvent(dpy, keycode, False, 0);
  25
  26   if (isupper(letter))
  27     XTestFakeKeyEvent(dpy, shiftcode, False, 0);
  28
  29   XFlush(dpy);
  30 }
  31
  32 void press_keys(Display *dpy, char* string) {
  33   int len = strlen(string);
  34   int i = 0;
  35   for (i = 0; i < len; i++) {
  36     key_press(dpy, string[i]);
  37   }
  38 }
  39
  40 int main(int argc, char**argv)
  41 {
  42   Display    *dpy;            /* X server connection */
  43   int xtest_major_version = 0;
  44   int xtest_minor_version = 0;
  45   int dummy;
  46
  47   /*
  48    * Open the display using the $DISPLAY environment variable to locate
  49    * the X server.  See Section 2.1.
  50    */
  51   if ((dpy = XOpenDisplay(NULL)) == NULL) {
  52     fprintf(stderr, "%s: can't open %s\en", argv[0], XDisplayName(NULL));
  53     exit(1);
  54   }
  55
  56   Bool success = XTestQueryExtension(dpy, &dummy, &dummy,
  57                                      &xtest_major_version, &xtest_minor_version);
  58   if(success == False || xtest_major_version < 2 ||
  59      (xtest_major_version <= 2 && xtest_minor_version < 2))
  60     {
  61       fprintf(stderr,"XTEST extension not supported. Can't continue\n");
  62       exit(1);
  63     }
  64
  65
  66   press_keys(dpy, "Hello world!");
  67
  68
  69
  70
  71
  72
  73   return 0;
  74 }