Sample Code
Windows Driver Samples/ Windows Image Acquisition (WIA) Driver Samples/ C++/ wiadriverex/ imgfilter/ wiaitem.h/
#pragma once
#define MIN_PROPID 2
class CWiaItem {
public:
CWiaItem();
~CWiaItem();
HRESULT SetIWiaItem(IWiaItem2 *pIWiaItem);
void Release();
HRESULT ReadRequiredPropertyLong(PROPID PropertyID, _Out_ LONG *plPropertyValue);
HRESULT ReadRequiredPropertyBSTR(PROPID PropertyID, _Outptr_ BSTR *pbstrPropertyValue);
HRESULT ReadRequiredPropertyGUID(PROPID PropertyID, _Out_ GUID *pguidPropertyValue);
private:
IWiaPropertyStorage *m_pIWiaPropStg;
protected:
};
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