QueryInterface의 첫 번째 매개변수에 전달하는 IID의 외부 참조를 어떻게 해야하나요?

		hr=lpds->CreateSoundBuffer(&dsbdesc, &pDsb, NULL);
		if(  SUCCEEDED(hr)  ) {
			hr=pDsb->QueryInterface(IID_IDirectSoundBuffer, (LPVOID*)&ppDsb8);//IID_IDirectSoundBuffer8
			pDsb->Release();
 
		}

#include <windows.h>
#include <tchar.h>
#pragma comment(lib, "dsound.lib")
//#pragma comment(lib, "..\\..\\..\\..\\..\\..\\..\\Program Files/Microsoft DirectX SDK (June 2010)\\Lib\\x86\\dsound.lib")
#include <dsound.h>
#include "\..\..\..\..\..\..\Program Files\Microsoft Visual Studio 9.0\SmartDevices\SDK\Smartphone2003\include\mapiguid.h"
 
LRESULT CALLBACK WinProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) {
	WNDCLASS wndCls;
	wndCls.cbClsExtra=0;
	wndCls.cbWndExtra=0;
	wndCls.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
	wndCls.hCursor=LoadCursor(NULL, IDC_ARROW);
	wndCls.hIcon=NULL;
	wndCls.hInstance=hInstance;
	wndCls.lpfnWndProc=WinProc;
	wndCls.lpszClassName=TEXT("test38888");
	wndCls.lpszMenuName=NULL;
	wndCls.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&wndCls);
	HWND hwnd=CreateWindow(wndCls.lpszClassName, TEXT("audio test"), WS_OVERLAPPEDWINDOW, 300, 300, 500, 500, NULL, NULL, hInstance, NULL);
	ShowWindow(hwnd, nShowCmd);
	MSG message;
	while(  GetMessage(&message, NULL, 0, 0) ) {
		TranslateMessage(&message);
		DispatchMessage(&message);
	}
	return message.wParam;
}
 
BOOL CALLBACK DSEnumProc(LPGUID lpGUID, LPCTSTR lpszDesc, LPCTSTR lpszDrvName, LPVOID lpContext) {
	HWND localHwnd=(HWND)lpContext;
	TCHAR tmbuffer[1024];
	lpGUID->Data1;
	if(lpGUID!=NULL) {
		//_stprintf(tmbuffer, TEXT("lpGUID %lx-%x-%x-%x%x-%.2x%.2x%.2x%.2x%.2x%.2x lpszDesc %s lpszDrvName %s"), lpGUID->Data1, lpGUID->Data2, lpGUID->Data3,
		//	lpGUID->Data4[0], lpGUID->Data4[1], lpGUID->Data4[2], lpGUID->Data4[3], lpGUID->Data4[4],
		//	lpGUID->Data4[5], lpGUID->Data4[6], lpGUID->Data4[7]
		//	, lpszDesc, lpszDrvName);
		//MessageBox(localHwnd, tmbuffer, NULL, MB_OK);
		IDirectSound8* lpds;//typedef IDirectSound8 *LPDIRECTSOUND8
 
		HRESULT hr=DirectSoundCreate8(NULL, &lpds, NULL);
		//_stprintf(tmbuffer, TEXT("%p"), lpds);
		//MessageBox(localHwnd, tmbuffer, NULL, MB_OK);
 
 
 
		//how to create IDirectSoundBuffer8
		WAVEFORMATEX wfx;
		memset(&wfx, 0, sizeof(WAVEFORMATEX));
		wfx.wFormatTag=WAVE_FORMAT_PCM;
		wfx.nChannels=2;
		wfx.nSamplesPerSec=22050;
		wfx.wBitsPerSample=16;
		wfx.nBlockAlign=wfx.nChannels*wfx.wBitsPerSample/8;
		wfx.nAvgBytesPerSec=wfx.nSamplesPerSec*wfx.nBlockAlign;
		DSBUFFERDESC dsbdesc;
		memset(&dsbdesc, 0, sizeof(DSBUFFERDESC));
		dsbdesc.dwSize=sizeof(DSBUFFERDESC);
		dsbdesc.dwFlags=DSBCAPS_CTRLPAN | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY
			| DSBCAPS_GLOBALFOCUS; 
		dsbdesc.dwBufferBytes=3*wfx.nAvgBytesPerSec;
		dsbdesc.lpwfxFormat=&wfx;
		LPDIRECTSOUNDBUFFER pDsb=NULL;//LPDIRECTSOUNDBUFFER
		LPDIRECTSOUNDBUFFER8 ppDsb8;
		hr=lpds->CreateSoundBuffer(&dsbdesc, &pDsb, NULL);
		if(  SUCCEEDED(hr)  ) {
			hr=pDsb->QueryInterface(IID_IDirectSoundBuffer, (LPVOID*)&ppDsb8);//IID_IDirectSoundBuffer8
			pDsb->Release();
 
		}
	}
	else {
		_stprintf(tmbuffer, TEXT("lpszDesc %s lpszDrvName %s"), lpszDesc, lpszDrvName);
		MessageBox(localHwnd, tmbuffer, NULL, MB_OK);
	}
	return TRUE;
}
 
LRESULT CALLBACK WinProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam) {
	switch(message) {
		case WM_CREATE:
			if(  FAILED( DirectSoundEnumerate( (LPDSENUMCALLBACK)DSEnumProc, (VOID*)hwnd ) )  ) {
				return TRUE;
			}
			break;
		case WM_DESTROY:
			PostQuitMessage(0);
			break;
 
	}
	return DefWindowProc(hwnd, message, wparam, lparam);
}