复合名字对象 ·通用复合名字对象 HRESULT Create Generic Composite(MOniker pmkFirst MOniker *pmkRest, MOniker **ppmk Composite) 按从左到右的顺序组合,满足结合律 举例:文档内部的电子表格
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ROT表 COM使用ROT表管理当前系统中正在运行的、已 经被注册的名字对象 class IRunningObjectTable: public IUnknown virtual HRESULT Register(DWORD grfFlags, IUnknown *pUnkObject MOniker "pmkObject, DWORD* pdwRegister)=0 virtual HRESULT Revoke(d WoRd dwRegister)=0 virtual HRESULT IsRunning(MOniker pmkObject)=0; virtual HRESULT GetObject(MOniker pmkObject, IUnknown**ppUnkObject)=0 virtual HRESULT Note Change Time(DWORD dw Register, FILETIME pft)=0 virtual HRESULT GetTimeOfLastChange(MOniker pmkObject, FILETIME*pft)=0 virtual HRESULT EnumRunning(IEnumMoniker *"pp Enum)=0 客户调用 GetRunning Object table函数访问ROT表
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绑定环境对象 也是COM实现的系统对象 WINOLEAPI Create BindCtx (DWORD reserved, IBindCtxppbc class IBindCtx: public IUnknown virtual HRESULT RegisterObject Bound(IUnknown punk)=0; virtual HRESULT RevokeObjectBound(IUnknown "punk)=0 virtual HRESULT Release boundobjectso=0 virtual HRESULT SetBindOptions(BIND OPTS pbindopts)=0 virtual HRESULT GetBindOptionS(BIND OPTS *pbindopts)=0 virtual HRESULT GetRunningObjectTable(IRunningObjectTable*pprot)=0; virtual HRESULT RegisterObjectParam(LPOLESTR pSzKey, IUnknown" punk )=0; virtual HRESULT GetObjectParam(LPOLESTR pszKey, IUnknown**ppunk)=0; virtual HRESULT EnumObjectParam(IEnumString*ppenum)=0; virtual HRESULT RevokeObjectParam(LPOLESTR pszKey =0
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绑定环境对象(续) 管理已被绑定的对象: Register ObjectBound RevokeObjectBound Release boundobjects ·管理绑定参数:(文件访问模式、超时设置等) SetBindOptions, GetBindOptions 管理绑定过程中的对象参数: RegisterobjectParam, GetObjectParam EnumObjectParam, RevokeObjectParam
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复合名字对象绑定过程的剖析 MOniker: BindToobject绑定过程: (1)检查ROT表。 2)分解。 pmkRight: pmkLeft,最右边部分分离 (3)调用 pmkRight> BindToobject((., pmkLeft,) (4)执行 pmkRight-> BindToobject 如果 pmkLeft为简单名字对象,则可终止循环 否则, pmkright往往要调用 pmkLeft-> BindToobject,从而 形成自右向左的循环绑定过程。 举例:File!teml!tem2
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