如何将十六进制字符串转换为无符号长整数？

CString str;
str = T(\"FFF000\");

unsigned long

#include <sstream>
#include <iostream>

int main()
{

    std::string s(\"0xFFF000\");
    unsigned long value;
    std::istringstream iss(s);
    iss >> std::hex >> value;
    std::cout << value << std::endl;

    return 0;
}

strtol

long l = strtol(str, NULL, 16);