Extract min implemetation for heap in c++

Question

I need to implement extract min for heap(in c++ if possible), could not get this method from STL heap.

Answer 1

Pass in std::greater<*> to the std::*_heap functions.

Answer 2

Yes and I forgot to quote, the element in the heap are not integer, its a struct with value, position and some other pointers. I am thinking STL heap cannot be used directly, Can I