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//+-------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1992.
//
// File: StgVarB.hxx - Storage Variant Base Class
//
// Contents: C++ Base wrapper for PROPVARIANT.
//
// History: 01-Aug-94 KyleP Created
//
//--------------------------------------------------------------------------
#if !defined(__STGVARB_HXX__)
#define __STGVARB_HXX__
class PSerStream;
class PDeSerStream;
class PMemoryAllocator
{
public:
virtual void *Allocate(ULONG cbSize) = 0;
virtual void Free(void *pv) = 0;
};
#if defined(OFSDBG) || defined(CIDBG)
#define DBGPROP (OFSDBG || DBG || CIDBG)
#else
#define DBGPROP DBG
#endif
#if DBGPROP
#if !defined(_NTDLLBUILD_)
#define ENABLE_DISPLAY_VARIANT
#endif
#endif
#if defined(_NTDLLBUILD_) && defined(_CAIRO_)
#define OLDSUMCATAPI
#endif
#if !defined(_NTDLLBUILD_) || defined(OLDSUMCATAPI)
#define ENABLE_MARSHAL_VARIANT
#endif
//+-------------------------------------------------------------------------
//
// Class: CBaseStorageVariant
//
// Purpose: C++ wrapper for PROPVARIANT
//
// History: 01-Aug-94 KyleP Created
//
// Notes: Only contains a static method to unmarshal from a stream.
//
//--------------------------------------------------------------------------
class CBaseStorageVariant: public /* VC 5 fix - Was "protected" */ tagPROPVARIANT
{
#if defined(OLDSUMCATAPI)
friend void MarshallVariant(PSerStream &stm, PROPVARIANT &var);
#endif
public:
CBaseStorageVariant() {}
CBaseStorageVariant(PROPVARIANT& var): tagPROPVARIANT(var) {}
#ifdef KERNEL
static NTSTATUS UnmarshalledSize( PDeSerStream &stm, ULONG & cb );
#endif
static NTSTATUS Unmarshall(
PDeSerStream &stm,
PROPVARIANT &sv,
PMemoryAllocator &ma);
#ifdef ENABLE_MARSHAL_VARIANT
void Marshall(PSerStream& stm) const;
#endif
#ifdef ENABLE_DISPLAY_VARIANT
VOID DisplayVariant(ULONG ulLevel, USHORT CodePage) const;
#endif
};
#if defined(OLDSUMCATAPI)
extern void MarshallVariant(PSerStream &stm, PROPVARIANT &var);
#endif
#endif // __STGVARB_HXX__
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