- (int)keyCodeForCharacter: (NSString*)character {      if(![character length]) return -1;        char code;      BOOL shift, alt;      if(Ascii2Virtual( (char)[character characterAtIndex: 0],shift,alt,code)) {          return code;      }      return -1;  }    BOOL Ascii2Virtual(char pcar, BOOL *pshift, BOOL *palt, char *pkeycode)  {      KeyboardLayoutRef keyboard;      const void *keyboardData; // keyboard layout data      UInt16 nbblocs;      char *modblocs, *blocs, *deadkeys;      int ix, ifin, numbloc, keycode;        BOOL shift, alt;      // get the current keyboard      if(KLGetCurrentKeyboardLayout(&keyboard;)) return NO;      // get the description of the current keyboard layout      if(KLGetKeyboardLayoutProperty(keyboard, kKLKCHRData, &keyboardData;)) return NO;      // get pointer early numbers of blocks for each combination of modifiers      modblocs = ((char *)keyboardData) + 2;      // get number of blocks keycode->ascii      nbblocs = *((UInt16 *)(keyboardData + 258));      // get pointer early blocks keycode-> ascii      blocs = ((char *)keyboardData) + 260;      // determining the size of all tables keycode-> ascii a scanner      ifin = nbblocs*128;      // determining pointer early in the tables of dead keys      deadkeys = blocs+ifin;      // Now it runs blocks keycode-> ascii to find the car ascii      for (ix=0; ix<ifin ; ix++)      {          if (blocs[ix]==pcar)          {                // found ascii value: now we must determine which block it is              keycode = ix & 0×7f; // 0111 1111 mask              numbloc = ix >> 7;              break;          }      }        // not found: bail out (error)      if (ix >= ifin) return NO;        // from block number, we must find the combination of modifiers using this block      for (ix=0; ix<15; ix++)      {          // it does not address whether the modifiers are not "capital" and "option"          if (ix&1 || ix&4) continue;          // Combining modifiers found for the block          if (modblocs[ix]==numbloc)          {              shift = (ix&2) ? YES : NO;              alt   = (ix&8) ? YES : NO;              break;                  }      }      // combination modifiers not found: bail      if (ix>=15) return NO;      // save our parameters      *pkeycode=keycode;      *pshift=shift;      *palt=alt;        return YES;  }