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ActivationFactory Class

  • Članek

Enables one or more classes to be activated by the Windows Runtime.

Syntax

template <
    typename I0 = Details::Nil,
    typename I1 = Details::Nil,
    typename I2 = Details::Nil
>
class ActivationFactory :
    public Details::RuntimeClass<
        typename Details::InterfaceListHelper<
            IActivationFactory,
            I0,
            I1,
            I2,
            Details::Nil
        >::TypeT,
        RuntimeClassFlags<WinRt | InhibitWeakReference>,
        false
    >;

Parameters

I0
The zeroth interface.

I1
The first interface.

I2
The second interface.

Remarks

ActivationFactory provides registration methods and basic functionality for the IActivationFactory interface. ActivationFactory also enables you to provide a custom factory implementation.

The following code fragment symbolically illustrates how to use ActivationFactory.

struct MyClassFactory : public ActivationFactory<IMyAddtionalInterfaceOnFactory>
{
    STDMETHOD(ActivateInstance) (_Outptr_result_nullonfailure_ IInspectable** ppvObject)
    {
        // my custom implementation

        return S_OK;
    }
};

ActivatableClassWithFactory(MyClass, MyClassFactory);
// or if a default factory is used:
//ActivatableClassWithFactory(MyClass, SimpleActivationFactory);

The following code fragment shows how to use the Implements structure to specify more than three interface IDs.

struct MyFactory : ActivationFactory<Implements<I1, I2, I3>, I4, I5>;

Members

Public Constructors

Name Description
ActivationFactory::ActivationFactory Initializes the ActivationFactory class.

Public Methods

Name Description
ActivationFactory::AddRef Increments the reference count of the current ActivationFactory object.
ActivationFactory::GetIids Retrieves an array of implemented interface IDs.
ActivationFactory::GetRuntimeClassName Gets the runtime class name of the object that the current ActivationFactory instantiates.
ActivationFactory::GetTrustLevel Gets the trust level of the object that the current ActivationFactory instantiates.
ActivationFactory::QueryInterface Retrieves a pointer to the specified interface.
ActivationFactory::Release Decrements the reference count of the current ActivationFactory object.

Inheritance Hierarchy

I0

ChainInterfaces

I0

RuntimeClassBase

ImplementsHelper

DontUseNewUseMake

RuntimeClassFlags

RuntimeClassBaseT

RuntimeClass

ActivationFactory

Requirements

Header: module.h

Namespace: Microsoft::WRL

ActivationFactory::ActivationFactory

Initializes the ActivationFactory class.

ActivationFactory();

ActivationFactory::AddRef

Increments the reference count of the current ActivationFactory object.

STDMETHOD_(
   ULONG,
   AddRef
)();

Return Value

S_OK if successful; otherwise, an HRESULT that describes the failure.

ActivationFactory::GetIids

Retrieves an array of implemented interface IDs.

STDMETHOD(
   GetIids
)(_Out_ ULONG *iidCount, _Deref_out_ _Deref_post_cap_(*iidCount) IID **iids);

Parameters

iidCount
When this operation completes, the number of interface IDs in the iids array.

iids
When this operation completes, an array of implemented interface IDs.

Return Value

S_OK if successful; otherwise, an HRESULT that describes the failure. E_OUTOFMEMORY is a possible failure HRESULT.

ActivationFactory::GetRuntimeClassName

Gets the runtime class name of the object that the current ActivationFactory instantiates.

STDMETHOD(
   GetRuntimeClassName
)(_Out_ HSTRING* runtimeName);

Parameters

runtimeName
When this operation completes, a handle to a string that contains the runtime class name of the object that the current ActivationFactory instantiates.

Return Value

S_OK if successful; otherwise, an HRESULT that describes the failure.

ActivationFactory::GetTrustLevel

Gets the trust level of the object that the current ActivationFactory instantiates.

STDMETHOD(
   GetTrustLevel
)(_Out_ TrustLevel* trustLvl);

Parameters

trustLvl
When this operation completes, the trust level of the runtime class that the ActivationFactory instantiates.

Return Value

S_OK if successful; otherwise, an assertion error is emitted and trustLvl is set to FullTrust.

ActivationFactory::QueryInterface

Retrieves a pointer to the specified interface.

STDMETHOD(
   QueryInterface
)(REFIID riid, _Deref_out_ void **ppvObject);

Parameters

riid
An interface ID.

ppvObject
When this operation is complete, a pointer to the interface specified by parameter riid.

Return Value

S_OK if successful; otherwise, an HRESULT that describes the failure.

ActivationFactory::Release

Decrements the reference count of the current ActivationFactory object.

STDMETHOD_(
   ULONG,
   Release
)();

Return Value

S_OK if successful; otherwise, an HRESULT that describes the failure.