HOW can I convert COleDispatchDriver methods from C++ to c#

class CIPmacDevice : public  COleDispatchDriver
{
public:
    CIPmacDevice() {}       // Calls COleDispatchDriver default constructor
    CIPmacDevice(LPDISPATCH pDispatch) : COleDispatchDriver(pDispatch) {}
    CIPmacDevice(const CIPmacDevice& dispatchSrc) : COleDispatchDriver(dispatchSrc) {}

// Attributes
public:

// Operations
public:
    void Open(long dwDevice, BOOL* pbSuccess);
    void SelectDevice(long hWindow, long* pDeviceNumber, BOOL* pbSuccess);
}


PCommServer.cpp

#include "stdafx.h"
#include "pCommServer.h"
void CIPmacDevice::Open(long dwDevice, BOOL* pbSuccess)
{
	static BYTE parms[] = 
		VTS_I4 VTS_PBOOL;
	
	InvokeHelper(0x1, DISPATCH_METHOD, VT_EMPTY, NULL, parms,
		 dwDevice, pbSuccess);
}

void CIPmacDevice::SelectDevice(long hWindow, long* pDeviceNumber, BOOL* pbSuccess)
{
	static BYTE parms[] =
		VTS_I4 VTS_PI4 VTS_PBOOL;
	InvokeHelper(0x1a, DISPATCH_METHOD, VT_EMPTY, NULL, parms,
		 hWindow, pDeviceNumber, pbSuccess);
}

DO I NEED TO IMPORT any DLL to do this.

Or Is there any other way to use COleDisplaydispatcher class in C#
i.e any eqivalent method for it

Can anyone provide step by step instructions to do it