int main(int argc, char *argv[])
{
    HKEY MyKey = 0;
 
    BYTE szBuff[255] = {0};
    DWORD cb = 0;
    DWORD dwType = REG_SZ;
    LONG rval;
    if (RegOpenKey(HKEY_CURRENT_USER, "Software\\Random\\Program", &MyKey) == ERROR_SUCCESS)
    {
       cout << "Program is installed\n";
       cb = sizeof(szBuff);
 
       //Debug info, this normally isn't here!
 
       if((rval = RegQueryValueEx(MyKey, "hexData", 0, &dwType, szBuff, &cb)) == ERROR_SUCCESS)
       {
          cout << "Program has been run once\n";
          printf((char *)szBuff);
       }
       printf("%d",rval);
       cout << '\n';
 
       RegCloseKey(MyKey);
    }
 
    system("PAUSE");
    return EXIT_SUCCESS;
}