DXP.DispatchImpl.h

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#pragma once
 
#ifndef DXP_DISPATCHIMPL_H_INCLUDED
#define DXP_DISPATCHIMPL_H_INCLUDED
 
#include <comdef.h>
#include <string>
/*..................................................................................................*/
#define QUERYINTERFACE_DECL            virtual HRESULT __stdcall QueryInterface( const IID & riid, void ** ppvObject)
 
#define QUERYINTERFACE_IMPL(Class,Parent,Intf) HRESULT __stdcall Class::QueryInterface( const IID & riid, void ** ppvObject)   \
                                               {                                                                               \
                                                   if ( riid == __uuidof(Intf) )                                               \
                                                   {                                                                           \
                                                       *ppvObject = (Intf *)this;                                              \
                                                       AddRef();                                                               \
                                                       return S_OK;                                                            \
                                                   }                                                                           \
                                                   else                                                                        \
                                                   {                                                                           \
                                                       return Parent::QueryInterface(riid, ppvObject);                         \
                                                   }                                                                           \
                                               }
/*..................................................................................................*/
 
/*..................................................................................................*/
class CDispatchRecord : public IDispatch
{
protected:
    ULONG mRefCount;
public:
    CDispatchRecord () : mRefCount(0) {}
 
    // IUnknown
    virtual HRESULT __stdcall QueryInterface( const IID & riid, void ** ppvObject);
    virtual ULONG   __stdcall AddRef (void);
    virtual ULONG   __stdcall Release(void);
 
    // IDispatch
    virtual HRESULT __stdcall GetTypeInfoCount(UINT *pctinfo);
    virtual HRESULT __stdcall GetTypeInfo(UINT iTInfo, LCID lcid, ITypeInfo **ppTInfo);
    virtual HRESULT __stdcall GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId);
    virtual HRESULT __stdcall Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags,DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr);
};
/*..................................................................................................*/
 
/*..................................................................................................*/
class CDispatchObject : public CDispatchRecord
{
public:
    CDispatchObject() {}
    virtual ~CDispatchObject() {}
    
    // IUnknown
    virtual ULONG   __stdcall Release(void);
 
    IDispatch* GetIDispatch();
};
/*..................................................................................................*/
 
/*..................................................................................................*/
struct __declspec(uuid("{1DEBA58E-0DF5-4081-93E9-0C1732E7DFAE}"))
IServicesSupportInternal : public IUnknown
{
public:
    virtual bool SupportsService(std::wstring const AServiceName) = 0;
};
/*..................................................................................................*/
 
/*..................................................................................................*/
class CAbstractSupportService : public CDispatchObject, public IServicesSupportInternal
{
public:
    // IUnknown
    virtual HRESULT __stdcall QueryInterface( const IID & riid, void ** ppvObject);
    virtual ULONG   __stdcall AddRef (void) { return CDispatchObject::AddRef();}
    virtual ULONG   __stdcall Release(void) { return CDispatchObject::Release();};
 
    // IDispatch
    virtual HRESULT __stdcall Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags,DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr);
 
    // IServicesSupportInternal
    virtual bool SupportsService(std::wstring const AServiceName);
 
    IServicesSupportInternal* GetServicesSupportInternal();
};
/*..................................................................................................*/
 
#endif  // DXP_DISPATCHIMPL_H_INCLUDED