这段代码的错误是什么！一个全局实例，调用时会出现错误

[神的理想]

下面是一个C++全局实例代码，不知错误在哪里！

#ifndef _OUT_LIB_H_
#define _OUT_LIB_H_

//#include "stdafx.h"
#include "IoHandle.h"
#include "Session.h"
#include "Network.h"
#include "RecvBuf.h"
#include "SendBuf.h"
#include "MyObject.h"


//class AsioNetwork;
class MeNetObject;
//class IoHandle;
//class RecvBuffer;
//class SendBuffer;
//class Session;

namespace ASIO_NET
{
	class COutLib
	{
	public:
		COutLib();
		~COutLib();
		static COutLib	*	Instance();
		AsioNetwork		*	InstanceNetWork();
		NetObject		*	InstanceNetObject();
		IoHandle		*	InstanceIoHandle();
		Session			*	InstanceSession();
		RecvBuffer		*	InstanceRecvBuffer();
		SendBuffer		*	InstanceSendBuffer();
		
	private:
		static COutLib	*	g_pInstance;
		AsioNetwork		*	g_pNetWorkInstance;
		MeObject		*	g_pNetObjectInstance;
		IoHandle		*	g_pIoHandleInstance;
		Session			*	g_pSessionInstance;
		RecvBuffer		*	g_pRecvBufferInstance;
		SendBuffer		*	g_pSendBufferInstance;
		
	};
	/***************************************************************************************************************************/
	COutLib* COutLib::g_pInstance = 0;
	COutLib::COutLib()
	{

		//	g_pInstance = new COutLib();
			g_pNetWorkInstance = new AsioNetwork();
			g_pNetObjectInstance = new MeObject();
			g_pIoHandleInstance = new IoHandle();
			g_pSessionInstance = new Session(1,g_pIoHandleInstance);
			g_pRecvBufferInstance = new RecvBuffer();
			g_pSendBufferInstance = new SendBuffer();
			


	}
	COutLib::~COutLib()
	{
		if(g_pInstance != NULL)
		{
		//	delete g_pInstance;
			delete g_pNetWorkInstance;
			delete g_pNetObjectInstance;
			delete g_pIoHandleInstance;
			delete g_pSessionInstance;
			delete g_pRecvBufferInstance;
			delete g_pSendBufferInstance;
			
		}

	}
	/***************************************************************************************************************************/
	inline
	COutLib*
	COutLib::Instance()
	{
		return g_pInstance;
	}
	/***************************************************************************************************************************/
	inline
	AsioNetwork*
	COutLib::InstanceNetWork()
	{
		return g_pNetWorkInstance;
	}
	///***************************************************************************************************************************/
	inline
	NetObject*
	COutLib::InstanceNetObject()
	{
		return g_pNetObjectInstance;
	}
	///***************************************************************************************************************************/
	inline
	IoHandle*
	COutLib::InstanceIoHandle()
	{
		return g_pIoHandleInstance;
	}
	///***************************************************************************************************************************/
	inline
	RecvBuffer*
	COutLib::InstanceRecvBuffer()
	{
		return g_pRecvBufferInstance;
	}
	///***************************************************************************************************************************/
	inline
	SendBuffer*
	COutLib::InstanceSendBuffer()
	{
		return g_pSendBufferInstance;
	}
	///***************************************************************************************************************************/
	inline
	Session*
	COutLib::InstanceSession()
	{
		return g_pSessionInstance;
	}
	///***************************************************************************************************************************/

}

#endif

下面是C++ 输出dll原型

//声明
extern DLLAPI bool //__stdcall 
Asio_Init( unsigned int max_client, unsigned int max_sendbuf, unsigned int max_recvbuf,
	 unsigned int max_client_pack, unsigned int ioThreads, unsigned int preAcceptAmount );
//实现
AsioNetwork ank;//使用这个声明在下面调用就没有错误！！！
////Asio_Init
//封装的网络模块
bool  
//__stdcall 
Asio_Init(unsigned int max_client ,unsigned int max_sendbuf ,unsigned int max_recvbuf ,unsigned int max_client_pack ,unsigned int ioThreads ,unsigned int preAcceptAmount)
{
    AsioNetwork::Config config;
    config.nStartId = 1; //Client开始ID
    config.nMaxClient = max_client;
    config.nMaxSendBuf = max_sendbuf;
    config.nMaxRecvBuf = max_recvbuf;
    config.nMaxClientPack = max_client_pack;
    config.nIoThreads = ioThreads;
    config.nTimeOut = 0;
    config.nPreAcceptAmount = preAcceptAmount;//连接总数
    config.fnCreateNetObject = Fn_CallBackCreateAcceptedObject;
    config.fnDestroyNetObject = Fn_CallBackDestroyAcceptedObject;
    
	bool bInit;
//如果用下面这一行输出的DLL，在C#中运行会出现错误提示
	//bInit = COutLib::Instance()->InstanceNetWork()->StartListen("127.0.0.1", 9998);
//如果换成下面的直接调用就不会出错，但是我想用上面的全局实例调用DLL中的所有函数，请教代码到底哪里有问题！
	ank.StartListen("127.0.0.1", 9998);
	printf("Asio_Init dll !");
  //  system("pause");
    return bInit;
}

下面是C#的调用：

public const string DLL_NAME = "AsioNetwork.dll";

////Asio_Init
[DllImport(DLL_NAME, CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)]
public static extern bool Asio_Init(uint max_client, uint max_sendbuf, uint max_recvbuf, 
                                    uint max_client_pack, uint ioThreads, uint preAcceptAmount);
...
 Asio_Init(5,32,32,16,5,1);//   这一行调用DLL出错。

运行提示的错误：c# dll尝试读取或写入受保护的内存。这通常指示其他内存已损坏

[Gloveing]

溢出了？

[神的理想]

问题的关键是，用对象调用这个函数时没问题，为什么不能用类中的静态指针调用了？

[hzqhbc]

很明显，你的g_pInstance为分配内存，还是个空指针。
将
COutLib* COutLib::g_pInstance = 0;
改为
COutLib* COutLib::g_pInstance = new COutLib;

或者将
COutLib::Instance()
{
return g_pInstance;
}
改为
COutLib::Instance()
{
if ( NULL == g_pInstance )
g_pInstance = new COutLib;
return g_pInstance;
}

记住，最后要释放它，否则会有内存泄露

[神的理想]

就是在 一个类中包含其他类的指针，我想用这个类一个出口（设置为静态的），能调用所有其他类的功能函数。我用这个唯一的出口为什么一调用就出错？
代码都在上面，请教哪里出错了。