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This method maps a name to a member of a type, or binds global variables and functions contained in a type library.
HRESULT Bind( OLECHAR FAR * szName , unsigned long lHashVal , unsigned short wFlags , ITypeInfo FAR*FAR * ppTInfo , DESCKIND FAR * pDescKind , BINDPTR FAR * pBindPtr );
Parameters
- szName
- NULL-terminated string that contains the name to be bound.
- lHashVal
- Hash value for the name computed by LHashValOfNameSys.
- wFlags
- Flags word that contains one or more of the Invokeflags defined in the INVOKEKINDenumeration. Specifies whether the name was referenced as a method or a property. When binding to a variable, specify the flag INVOKE_PROPERTYGET. Specify zero to bind to any type of member.
- ppTInfo
- If a FUNCDESCor VARDESCwas returned, then ppTInfois a pointer to a pointer to the type description that contains the item to which it is bound.
- pDescKind
- Pointer to a DESCKINDenumerator that indicates whether the name bound to is a VARDESC, FUNCDESC, or TYPECOMP. If there was no match, points to DESCKIND_NONE.
- pBindPtr
- On return, contains a pointer to the bound-to
VARDESC,
FUNCDESC, or
ITypeCompinterface.
Return Values
One of the values described in the following table is returned.
Value Description S_OK Success. E_OUTOFMEMORY Out of memory. E_INVALIDARG One or more of the parameters is invalid. TYPE_E_IOERROR The function could not read from the file. TYPE_E_INVDATAREAD Invalid data. TYPE_E_UNSUPFORMAT The type library has an older format. TYPE_E_INVALIDSTATE The type library could not be opened. TYPE_E_AMBIGUOUSNAME More than one instance of this name occurs in the type library. Remarks
Use Bindfor binding to the variables and methods of a type, or for binding to the global variables and methods in a type library. The returned DESCKINDpointer pDescKindindicates whether the name was bound to a VARDESC, a FUNCDESC, or to an ITypeCompinstance. The returned pBindPtrpoints to the VARDESC, FUNCDESC, or ITypeComp.
If a data member or method is bound to, then ppTInfopoints to the type description that contains the method or data member.
If Bindbinds the name to a nested binding context, it returns a pointer to an ITypeCompinstance in pBindPtrand a NULL type description pointer in ppTInfo. For example, if the name of a type description is passed for a module (TKIND_MODULE), enumeration (TKIND_ENUM), or coclass (TKIND_COCLASS), Bindreturns the ITypeCompinstance of the type description for the module, enumeration, or coclass. This feature supports languages such as Visual Basic that allow references to members of a type description to be qualified by the name of the type description. For example, a function in a module can be referenced by modulename .functionname.
The members of TKIND_ENUM, TKIND_MODULE, and TKIND_COCLASS types marked as Application objects can be bound to directly from ITypeComp, without specifying the name of the module. The ITypeCompof a coclass defers to the ITypeCompof its default interface.
As with other methods of ITypeComp, ITypeInfo, and ITypeLib, the calling code is responsible for releasing the returned object instances or structures. If a VARDESC or FUNCDESC is returned, the caller is responsible for deleting it with the returned type description and releasing the type description instance itself. Otherwise, if an ITypeCompinstance is returned, the caller must release it.
Special rules apply if you call a type library's Bindmethod, passing it the name of a member of an Application object class (a class that has the TYPEFLAG_FAPPOBJECT flag set). In this case, Bindreturns DESCKIND_IMPLICITAPPOBJ in pDescKind,a VARDESC that describes the Application object in pBindPtr, and the ITypeInfoof the Application object class in ppTInfo. To bind to the object, ITypeInfo::GetTypeCompmust make a call to get the ITypeCompof the Application object class, and then reinvoke its Bindmethod with the name initially passed to the type library 's ITypeComp.
The caller should use the returned ITypeInfopointer ( ppTInfo) to get the address of the member.
The wflagsparameter is the same as the wflagsparameter in IDispatch::Invoke.
Requirements
Runs on Versions Defined in Include Link to Windows CE OS 2.0 and later Oaidl.h Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.