Sample Code
Windows Driver Samples/ Windows Image Acquisition (WIA) Driver Samples/ C++/ wiadriverex/ segfilter/ wiaitem.h/
#pragma once
#define MIN_PROPID 2
class CWiaItem {
public:
CWiaItem();
~CWiaItem();
HRESULT SetIWiaItem(_In_ IWiaItem2 *pIWiaItem);
void Release();
HRESULT ReadPropertyLong(PROPID PropertyID, _Out_ LONG *plPropertyValue);
HRESULT ReadPropertyGUID(PROPID PropertyID, _Out_ GUID *pguidPropertyValue);
HRESULT ReadPropertyBSTR(PROPID PropertyID, _Out_ BSTR *pbstrPropertyValue);
HRESULT WritePropertyLong(PROPID PropertyID, LONG lPropertyValue);
HRESULT WritePropertyGUID(PROPID PropertyID, GUID guidPropertyValue);
private:
IWiaPropertyStorage *m_pIWiaPropStg;
protected:
};
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