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ChainInterfaces Structure

  • Article

Specifies verification and initialization functions that can be applied to a set of interface IDs.

template <
   typename I0,
   typename I1,
   typename I2 = Details::Nil,
   typename I3 = Details::Nil,
   typename I4 = Details::Nil,
   typename I5 = Details::Nil,
   typename I6 = Details::Nil,
   typename I7 = Details::Nil,
   typename I8 = Details::Nil,
   typename I9 = Details::Nil
>
struct ChainInterfaces : I0;
template <
   typename DerivedType,
   typename BaseType,
   bool hasImplements,
   typename I1,
   typename I2,
   typename I3,
   typename I4,
   typename I5,
   typename I6,
   typename I7,
   typename I8,
   typename I9
>
struct ChainInterfaces<MixIn<DerivedType, BaseType, hasImplements>, I1, I2, I3, I4, I5, I6, I7, I8, I9>;

Parameters

  • I0
    (Required) Interface ID 0.

  • I1
    (Required) Interface ID 1.

  • I2
    (Optional) Interface ID 2.

  • I3
    (Optional) Interface ID 3.

  • I4
    (Optional) Interface ID 4.

  • I5
    (Optional) Interface ID 5.

  • I6
    (Optional) Interface ID 6.

  • I7
    (Optional) Interface ID 7.

  • I8
    (Optional) Interface ID 8.

  • I9
    (Optional) Interface ID 9.

  • DerivedType
    A derived type.

  • BaseType
    The base type of a derived type.

  • hasImplements
    A Boolean value that if true, means you can't use a MixIn structure with a class that does not derive from the Implements stucture.

Members

Protected Methods

Name

Description

ChainInterfaces::CanCastTo Method

Indicates whether the specified interface ID can be cast to each of the specializations defined by the ChainInterface template parameters.

ChainInterfaces::CastToUnknown Method

Casts the interface pointer of the type defined by the I0 template parameter to a pointer to IUnknown.

ChainInterfaces::FillArrayWithIid Method

Stores the interface ID defined by the I0 template parameter into a specified location in a specified array of interface IDs.

ChainInterfaces::Verify Method

Verifies that each interface defined by template parameters I0 through I9 inherits from IUnknown and/or IInspectable, and that I0 inherits from I1 through I9.

Protected Constants

Name

Description

ChainInterfaces::IidCount Constant

The total number of interface IDs contained in the interfaces specified by template parameters I0 through I9.

Inheritance Hierarchy

I0

ChainInterfaces

Requirements

Header: implements.h

Namespace: Microsoft::WRL

See Also

Reference

Microsoft::WRL Namespace