char[] 转 DWORD

// keyValue 为 char[]
DWORD dw_keyValue = keyValue[0] | keyValue[1] << 8 | keyValue[2] << 16 | keyValue[3] << 24;

DWORD - string 互转

// string 转 dword
DWORD stringToDword(string val){
   DWORD cur_dword;
   sscanf(val.c_str(),"%ul",&cur_dword);
   return cur_dword;
}

// dword 转 string 
string dwordToString(DWORD val){
   string cur_str = to_string(long long (val));
   return cur_str;
}