Windows2003-3790/windows/advcore/duser/engine/msg/msgobject.h

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2001-01-01 00:00:00 +01:00
/***************************************************************************\
*
* File: MsgObject.h
*
* Description:
* MsgObject.h defines the "Message Object" class that is used to receive
* messages in DirectUser. This object is created for each instance of a
* class that is instantiated.
*
*
* History:
* 8/05/2000: JStall: Created
*
* Copyright (C) 2000 by Microsoft Corporation. All rights reserved.
*
\***************************************************************************/
#if !defined(MSG__MsgObject_h__INCLUDED)
#define MSG__MsgObject_h__INCLUDED
#pragma once
class MsgTable;
class MsgClass;
struct ExposedMsgObject
{
const MsgTable * m_pmt;
GArrayS<void *> m_arpThis;
};
class MsgObject : public BaseObject
{
// Construction
public:
inline MsgObject();
inline ~MsgObject();
protected:
virtual void xwDestroy();
void xwEndDestroy();
// BaseObject
public:
virtual HandleType GetHandleType() const { return htMsgObject; }
virtual UINT GetHandleMask() const { return hmMsgObject; }
// Operations
public:
static DUser::Gadget *
CastGadget(HGADGET hgad);
static DUser::Gadget *
CastGadget(MsgObject * pmo);
static HGADGET CastHandle(DUser::Gadget * pg);
static HGADGET CastHandle(MsgObject * pmo);
static MsgObject * CastMsgObject(DUser::Gadget * pg);
static MsgObject * CastMsgObject(HGADGET hgad);
inline DUser::Gadget *
GetGadget() const;
BOOL InstanceOf(const MsgClass * pmcTest) const;
inline DUser::Gadget *
CastClass(const MsgClass * pmcTest) const;
void * GetGutsData(const MsgClass * pmcData) const;
inline HRESULT PreAllocThis(int cSlots);
inline void FillThis(int idxSlotStart, int idxSlotEnd, void * pvThis, const MsgTable * pmtNew);
inline HRESULT Promote(void * pvThis, const MsgTable * pmtNew);
inline void Demote(int cLevels);
inline void * GetThis(int idxThis) const;
inline int GetDepth() const;
inline int GetBuildDepth() const;
inline void InvokeMethod(MethodMsg * pmsg) const;
#if 1
BOOL SetupInternal(HCLASS hcl);
#endif
// Implementation
protected:
static MsgObject * RawCastMsgObject(DUser::Gadget * pg);
static DUser::Gadget *
RawCastGadget(MsgObject * pmo);
public:
static HRESULT CALLBACK
PromoteInternal(DUser::ConstructProc pfnCS, HCLASS hclCur, DUser::Gadget * pgad, DUser::Gadget::ConstructInfo * pciData);
static HCLASS CALLBACK
DemoteInternal(HCLASS hclCur, DUser::Gadget * pgad, void * pvData);
// Data
private:
ExposedMsgObject
m_emo; // Actual data
public:
static HCLASS s_hclSuper; // DUMMY data used by IMPL classes
};
#define DECLARE_INTERNAL(name) \
static HCLASS CALLBACK \
Demote##name(HCLASS hclCur, DUser::Gadget * pgad, void * pvData) \
{ \
return DemoteInternal(hclCur, pgad, pvData); \
} \
\
static void MarkInternal() \
{ \
GetClassLibrary()->MarkInternal(s_mc.hclNew); \
} \
template <class T>
inline T *
Cast(const MsgObject * pmo)
{
return static_cast<T *> (const_cast<MsgObject *> (pmo)->GetGadget());
}
#include "MsgObject.inl"
#endif // MSG__MsgObject_h__INCLUDED