STL prioprity_queue

 #include<queue>
unsing namespace stl;

CVODEvent{

....... 

bool operator < (CVODEvent &a );
 bool operator >= (CVODEvent &a);
};

typedef struct _tagcompare //自定义比较的函数
{
 bool operator() (CVODEvent *a, CVODEvent *b)
 {
  return *a >= *b;
 }
}compare;

typedef priority_queue<CVODEvent *, vector<CVODEvent*>, compare> VODEeventPQ;
重载 < 和 >= 和比较方法，然后就可以用这个类了：）

you can also see the methoed in the url:

http://support.microsoft.com/kb/837697/zh-cn