Programcrash on 64-Bit windows

// headerfile

#define TYPEDEF_VK_TO_WCHARS(n) typedef struct _VK_TO_WCHARS##n { \
  BYTE  VirtualKey; \
  BYTE  Attributes; \
  WCHAR wch[n]; \
} VK_TO_WCHARS##n, *KBD_LONG_POINTER PVK_TO_WCHARS##n;

TYPEDEF_VK_TO_WCHARS(1)
TYPEDEF_VK_TO_WCHARS(2)
TYPEDEF_VK_TO_WCHARS(3)
TYPEDEF_VK_TO_WCHARS(4)
TYPEDEF_VK_TO_WCHARS(5)
TYPEDEF_VK_TO_WCHARS(6)
TYPEDEF_VK_TO_WCHARS(7)
TYPEDEF_VK_TO_WCHARS(8)
TYPEDEF_VK_TO_WCHARS(9)
TYPEDEF_VK_TO_WCHARS(10)

typedef struct _VK_TO_WCHAR_TABLE {
  PVK_TO_WCHARS1 pVkToWchars;
  BYTE           nModifications;
  BYTE           cbSize;
} VK_TO_WCHAR_TABLE, *KBD_LONG_POINTER PVK_TO_WCHAR_TABLE;

#define INIT_PVK_TO_WCHARS(i, n) \
if((pKbd->pVkToWcharTable[i].cbSize - 2) / 2 == n) \
  pVkToWchars##n = (PVK_TO_WCHARS##n)pKbd->pVkToWcharTable[i].pVkToWchars; \

  
// sourcefile
HINSTANCE loadKeyboardLayout() {
  PKBDTABLES pKbd;
  HINSTANCE kbdLibrary;
  KbdLayerDescriptor pKbdLayerDescriptor = NULL;

  char layoutFile[MAX_PATH];

  if (getKeyboardLayoutFile(layoutFile, sizeof(layoutFile)) == -1) return NULL;

  char systemDirectory[MAX_PATH];
  GetSystemDirectory(systemDirectory, MAX_PATH);

  char kbdLayoutFilePath[MAX_PATH];
  snprintf(kbdLayoutFilePath, MAX_PATH, "%s\\%s", systemDirectory, layoutFile);

  kbdLibrary = LoadLibrary(kbdLayoutFilePath);

  pKbdLayerDescriptor
      = (KbdLayerDescriptor) GetProcAddress(kbdLibrary, "KbdLayerDescriptor");

  if (pKbdLayerDescriptor != NULL) pKbd = pKbdLayerDescriptor();
  else return NULL;

  int i = 0;
  do {
    INIT_PVK_TO_WCHARS(i, 1) // crash at this line on an 64-Bit windows
    INIT_PVK_TO_WCHARS(i, 2)
    INIT_PVK_TO_WCHARS(i, 3)
    INIT_PVK_TO_WCHARS(i, 4)
    INIT_PVK_TO_WCHARS(i, 5)
    INIT_PVK_TO_WCHARS(i, 6)
    INIT_PVK_TO_WCHARS(i, 7)
    INIT_PVK_TO_WCHARS(i, 8)
    INIT_PVK_TO_WCHARS(i, 9)
    INIT_PVK_TO_WCHARS(i, 10)
    i++;
  } while (pKbd->pVkToWcharTable[i].cbSize != 0);
  return kbdLibrary;
}

int getKeyboardLayoutFile(char* layoutFile, DWORD bufferSize) {
  HKEY hKey;
  DWORD varType = REG_SZ;

  char kbdName[KL_NAMELENGTH];
  GetKeyboardLayoutName(kbdName);

  char kbdKeyPath[51 + KL_NAMELENGTH];
  snprintf(kbdKeyPath, 51 + KL_NAMELENGTH,
           "SYSTEM\\CurrentControlSet\\Control\\Keyboard Layouts\\%s", kbdName);

  if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, (LPCTSTR) kbdKeyPath, 0,
                   KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS) return -1;

  if (RegQueryValueEx(hKey, "Layout File", NULL, &varType, (LPBYTE) layoutFile,
                      &bufferSize) != ERROR_SUCCESS) return -1;

  RegCloseKey(hKey);

  return 1;
}