来自「visualCplusplus学习课件大连东软培训教材」· 代码 · 共 42 行

// Test01.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <iostream.h>
#include <string.h>
class CControl
{
public:
	void Fun();
	static CControl* GetControl();
	~CControl();
protected:
private:
	static CControl* m_pControl;
};
CControl* CControl::m_pControl = NULL;

CControl::~CControl()
{
	m_pControl = NULL;
}

CControl* CControl::GetControl()
{
	if (NULL == m_pControl)
	{
		m_pControl = new CControl();
	}
	return m_pControl;
}
void CControl::Fun()
{
	cout << "only one class " << endl;
}
void main()
{
	CControl::GetControl()->Fun();
	delete (CControl::GetControl());
}