oaidl.h header

This header is used by Automation. For more information, see:

• Automation

oaidl.h contains the following programming interfaces:

Interfaces

ICreateErrorInfo Returns error information.
ICreateTypeInfo Provides the tools for creating and administering the type information defined through the type description. (ICreateTypeInfo)
ICreateTypeInfo2 Provides the tools for creating and administering the type information defined through the type description. (ICreateTypeInfo2)
ICreateTypeLib Provides the methods for creating and managing the component or file that contains type information. (ICreateTypeLib)
ICreateTypeLib2 Provides the methods for creating and managing the component or file that contains type information. (ICreateTypeLib2)
IDispatch Exposes objects, methods and properties to programming tools and other applications that support Automation.
IEnumVARIANT Provides a method for enumerating a collection of variants, including heterogeneous collections of objects and intrinsic types.
IErrorInfo Provides detailed contextual error information.
IErrorLog Communicates detailed error information between a client and an object.
IPropertyBag Provides an object with a property bag in which the object can save its properties persistently.
IRecordInfo Describes the structure of a particular UDT.
ISupportErrorInfo Ensures that error information can be propagated up the call chain correctly. Automation objects that use the error handling interfaces must implement ISupportErrorInfo.
ITypeChangeEvents Enables clients to subscribe to type change notifications on objects that implement the ITypeInfo, ITypeInfo2, ICreateTypeInfo, and ICreateTypeInfo2 interfaces.
ITypeComp The ITypeComp interface provides a fast way to access information that compilers need when binding to and instantiating structures and interfaces.
ITypeInfo Used for reading information about objects. (ITypeInfo)
ITypeInfo2 Used for reading information about objects. (ITypeInfo2)
ITypeLib Represents a type library, the data that describes a set of objects. (ITypeLib)
ITypeLib2 Represents a type library, the data that describes a set of objects. (ITypeLib2)

Functions

BSTR_UserFree Frees resources on the server side when called by RPC stub files. (BSTR_UserFree)
BSTR_UserFree64 Frees resources on the server side when called by RPC stub files. (BSTR_UserFree64)
BSTR_UserMarshal Marshals a BSTR object into the RPC buffer. (BSTR_UserMarshal)
BSTR_UserMarshal64 Marshals a BSTR object into the RPC buffer. (BSTR_UserMarshal64)
BSTR_UserSize Calculates the wire size of the BSTR object, and gets its handle and data. (BSTR_UserSize)
BSTR_UserSize64 Calculates the wire size of the BSTR object, and gets its handle and data. (BSTR_UserSize64)
BSTR_UserUnmarshal Unmarshals a BSTR object from the RPC buffer. (BSTR_UserUnmarshal)
BSTR_UserUnmarshal64 Unmarshals a BSTR object from the RPC buffer. (BSTR_UserUnmarshal64)
VARIANT_UserFree Frees resources on the server side when called by RPC stub files. (VARIANT_UserFree)
VARIANT_UserFree64 Frees resources on the server side when called by RPC stub files. (VARIANT_UserFree64)
VARIANT_UserMarshal Marshals a VARIANT object into the RPC buffer. (VARIANT_UserMarshal)
VARIANT_UserMarshal64 Marshals a VARIANT object into the RPC buffer. (VARIANT_UserMarshal64)
VARIANT_UserSize Calculates the wire size of the VARIANT object, and gets its handle and data. (VARIANT_UserSize)
VARIANT_UserSize64 Calculates the wire size of the VARIANT object, and gets its handle and data. (VARIANT_UserSize64)
VARIANT_UserUnmarshal Unmarshals a VARIANT object from the RPC buffer. (VARIANT_UserUnmarshal)
VARIANT_UserUnmarshal64 Unmarshals a VARIANT object from the RPC buffer. (VARIANT_UserUnmarshal64)

Structures

ARRAYDESC Describes an array, its element type, and its dimension.
BINDPTR Describes a pointer.
CUSTDATA Represents custom data.
CUSTDATAITEM Represents a custom data item.
DISPPARAMS Contains the arguments passed to a method or property.
ELEMDESC The ELEMDESC structure contains the type description and process-transfer information for a variable, a function, or a function parameter. (ELEMDESC)
EXCEPINFO Describes an exception that occurred during IDispatch::Invoke.
FUNCDESC Describes a function. (FUNCDESC)
PARAMDESC Contains information needed for transferring a structure element, parameter, or function return value between processes.
PARAMDESCEX Contains information about the default value of a parameter.
SAFEARRAY Represents a safe array.
SAFEARRAYBOUND Represents the bounds of one dimension of the array.
TLIBATTR Contains information about a type library. Information from this structure is used to identify the type library and to provide national language support for member names.
TYPEATTR Contains attributes of a type.
TYPEDESC Describes the type of a variable, the return type of a function, or the type of a function parameter.
VARDESC Describes a variable, constant, or data member.
VARIANT VARIANTARG describes arguments passed within DISPPARAMS, and VARIANT to specify variant data that cannot be passed by reference.

Enumerations

CALLCONV Identifies the calling convention used by a member function described in the METHODDATA structure.
DESCKIND Identifies the type description being bound to.
FUNCFLAGS Specifies function flags.
FUNCKIND Specifies the function type.
INVOKEKIND Specifies the way a function is invoked.
LIBFLAGS Defines flags that apply to type libraries.
SYSKIND Identifies the target operating system platform.
TYPEFLAGS The type flags.
TYPEKIND Specifies a type.
VARFLAGS Specifies variable flags.
VARKIND Specifies the variable type.