Found the answer!
Code:
#include <algorithm>
#include <vector>
#include <functional>

using namespace std;

class Test
{
public:

    void Function1(int t)
    {
    }

    void Function2()
    {
        for_each(data.begin(), data.end(), bind1st(mem_fun(&Test::Function1), this));
    }

private:
    vector<int> data;
};

int main()
{
    Test test;

    test.Function2();
}