WTL里如何实现CCmdTarget

[云满笔记]

MFC里面有个类CCmdTarget，我有个项目用到了这个东西，它是CEventSink，继承自CCmdTarget的，代码如下：

EventSink.h

class CEventSink : public CCmdTarget
{
	DECLARE_DYNAMIC(CEventSink)

public:
	CScannerSDKSampleAppDlg * AppBridge;
	CEventSink();
	CEventSink(CScannerSDKSampleAppDlg *ParaAppBridge);
	virtual ~CEventSink();
	

	virtual void OnFinalRelease();
	void onScanCmdResponseEvent(short status, BSTR scanCmdResponse);
	void onScanDataEvent(short reserved, BSTR scanData);
	
	void onVideoEvent(SHORT eventType, LONG size, VARIANT *sfvideoData, BSTR* pScannerData);
	void onImageEvent(SHORT eventType, LONG size, SHORT imageFormat, VARIANT *sfImageData, BSTR* pScannerData);
	
	void onPNPEvents(short eventType, BSTR ppnpData); 
	void onScannerNotificationEvent(short scannerMode, BSTR pScannerData); 
	void onScanRMDEvent(short eventType, BSTR eventData);
	void onIONotificationEvent(short type, unsigned char data);
	void OnISO15434Event(SHORT eventType, LONG size, SHORT imageFormat, VARIANT *sfImageData, BSTR* pScannerData);

protected:
	DECLARE_MESSAGE_MAP()
	DECLARE_DISPATCH_MAP()
	DECLARE_INTERFACE_MAP()
};

EventSink.cpp

IMPLEMENT_DYNAMIC(CEventSink, CCmdTarget)

CEventSink::CEventSink()
{
	EnableAutomation();
}

CEventSink::CEventSink(CScannerSDKSampleAppDlg *ParaAppBridge)
{
	AppBridge = ParaAppBridge;
	EnableAutomation();
}

CEventSink::~CEventSink()
{
}


void CEventSink::OnFinalRelease()
{
	CCmdTarget::OnFinalRelease();
}


BEGIN_MESSAGE_MAP(CEventSink, CCmdTarget)
END_MESSAGE_MAP()

BEGIN_DISPATCH_MAP(CEventSink, CCmdTarget)
	DISP_FUNCTION_ID(CEventSink, "ScanCmdResponseEvent", 5, onScanCmdResponseEvent, VT_EMPTY,VTS_I2 VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "onPNPEvents", 4, onPNPEvents, VT_EMPTY, VTS_I2 VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "ScanDataEvent", 3, onScanDataEvent, VT_EMPTY,VTS_I2 VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "ScanRMDEvent", 6, onScanRMDEvent,VT_EMPTY,VTS_I2 VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "OnImageEvent", 1, onImageEvent, VT_EMPTY, VTS_I2 VTS_I4 VTS_I2 VTS_PVARIANT VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "OnVideoEvent", 2, onVideoEvent, VT_EMPTY, VTS_I2 VTS_I4 VTS_PVARIANT VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "OnScannerNotificationEvent", 8, onScannerNotificationEvent, VT_EMPTY, VTS_I2 VTS_BSTR)
	DISP_FUNCTION_ID(CEventSink, "OnIOEvent", 7, onIONotificationEvent, VT_EMPTY, VTS_I2 VTS_UI1)
	DISP_FUNCTION_ID(CEventSink, "OnISO15434Event", 9, OnISO15434Event, VT_EMPTY, VTS_I2 VTS_I4 VTS_I2 VTS_PVARIANT VTS_BSTR)
END_DISPATCH_MAP()

static const IID IID_IEventSink =
{ 0xD9D7AF5A, 0x7D86, 0x423C, { 0xBF, 0x65, 0xE6, 0x86, 0x82, 0x3B, 0x32, 0x2F}};

BEGIN_INTERFACE_MAP(CEventSink, CCmdTarget)
	INTERFACE_PART(CEventSink, DIID__ICoreScannerEvents, Dispatch)
END_INTERFACE_MAP()


void CEventSink::onScanCmdResponseEvent(short status, BSTR scanCmdResponse)
{
	AppBridge->OnCmdResponse(status, scanCmdResponse);
}

void CEventSink::onIONotificationEvent(short type, unsigned char data)
{
	AppBridge->OnIOResponse(type, data);
}

void CEventSink::onScanDataEvent(short reserved, BSTR scanData)
{
	AppBridge->OnScanData(reserved, scanData);
}

void CEventSink::onImageEvent(SHORT eventType, LONG size, SHORT imageFormat, VARIANT *sfImageData, BSTR* pScannerData)
{
	LPBYTE MediaBuffer;
	SAFEARRAY* psa = sfImageData->parray;
	HRESULT hr = SafeArrayAccessData(psa, (void**)&MediaBuffer);
	hr = SafeArrayUnaccessData(psa);
	AppBridge->OnImageEvent(MediaBuffer, size);
}

void CEventSink::onVideoEvent(SHORT eventType, LONG size, VARIANT *sfvideoData, BSTR* pScannerData)
{
	
	LPBYTE MediaBuffer;
	SAFEARRAY* psa = sfvideoData->parray;
	HRESULT hr = SafeArrayAccessData(psa, (void**)&MediaBuffer);
	hr = SafeArrayUnaccessData(psa);
	AppBridge->OnVideoEvent(MediaBuffer, size);
}


void CEventSink::onPNPEvents(short eventType, BSTR ppnpData)
{
	AppBridge->OnPNP(eventType,ppnpData);
}

void CEventSink::onScannerNotificationEvent(short notificationType, BSTR pScannerData)
{
	AppBridge->OnNotificationEvent(notificationType,pScannerData);
}


void CEventSink::onScanRMDEvent(short eventType, BSTR eventData)
{
	AppBridge->OnRMD(eventType,eventData);
}

void CEventSink::OnISO15434Event(SHORT eventType, LONG size, SHORT imageFormat, VARIANT *sfImageData, BSTR* pScannerData)
{
	LPBYTE MediaBuffer;
	SAFEARRAY* psa = sfImageData->parray;
	HRESULT hr = SafeArrayAccessData(psa, (void**)&MediaBuffer);
	hr = SafeArrayUnaccessData(psa);
	AppBridge->OnISO15434Event(MediaBuffer, size, imageFormat, pScannerData);
}

请问，上面只是MFC的形式，如何将上述改成WTL能用的？？求大神指教啊！！

[云满笔记]

分不是问题 我担心的就是没有人会回答啊 如果答案给力的话是会加很多分的 这个版区人少 大家多多支持啊

[云满笔记]

求指教啊 ！！

[云满笔记]

怎么没人啊 送分啊