2D Graph ActiveX Control

// NVector.h: interface for the CNVector class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_NVECTOR_H__20F39921_490B_4640_A830_CD50343AF2AF__INCLUDED_)
#define AFX_NVECTOR_H__20F39921_490B_4640_A830_CD50343AF2AF__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <iostream>
#include <vector>
using namespace std;

class CNVector : public vector<double>  
{
public:
	CNVector(); //  Constructs an empty vector. 
    CNVector( unsigned int size ); //  Constructs a vector with the specified number of elements.
    CNVector( unsigned int size, double value );  //  Constructs a vector with the specified number of elements initialized to a constant value. 
    CNVector( unsigned int size, const double* data ); //  Constructs a vector with the specified number of elements initialized from an array of data values. 
	CNVector( const CNVector& source ); // Copy Constructor
	virtual ~CNVector();
	double & Append( const double& element ); // Appends an element  
    double & Append( const CNVector& other ); // Appends the specified  
	void Copy( const CNVector& source ); // Copies the internal vector data from another vector  
    inline void CopyDataToVector( const double* data, unsigned int size ); // Copies a data array of the templatized type to this vector. 
	void Init( int size = 0 ); // Initializes the vector. 
	CNVector & operator =( const CNVector& source ); // Assignment operator. 
public:
    double operator []( int index ) const; // Returns the value of the vector element at the specified index. 
    double operator []( long index ) const; // Returns the value of the vector element at the specified index. 
    double operator []( unsigned int index ) const; // Returns the value of the vector element at the specified index. 
    double operator []( unsigned long index ) const; // Returns the value of the vector element at the specified index. 
    double & operator []( int index ); // Returns a reference to the value of the vector element at the specified index. 
    double & operator []( long index ); // Returns a reference to the value of the vector element at the specified index. 
    double & operator []( unsigned int index ); // Returns a reference to the value of the vector element at the specified index. 
    double & operator []( unsigned long index ); // Returns a reference to the value of the vector element at the specified index. 
    void Set( const double& value ); // Sets every element in the vector to the same value. 
private:
	double *buf;
	vector<double>vec;
	int length;


};  

#endif // !defined(AFX_NVECTOR_H__20F39921_490B_4640_A830_CD50343AF2AF__INCLUDED_)