InvokeHelper Structure

Article
06/05/2017

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The latest version of this topic can be found at InvokeHelper Structure.

Supports the WRL infrastructure and is not intended to be used directly from your code.

Syntax

template<  
   typename TDelegateInterface,  
   typename TCallback,  
   unsigned int argCount  
>  
struct InvokeHelper;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 0> : public Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 1> : public Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 2> : public Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 3> : public Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 4> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 5> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 6> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 7> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 8> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;  
template<  
   typename TDelegateInterface,  
   typename TCallback  
>  
struct InvokeHelper<TDelegateInterface, TCallback, 9> : Microsoft::WRL::RuntimeClass<RuntimeClassFlags<Delegate>, TDelegateInterface>;

Parameters

TDelegateInterface
TCallback
The type of the event handler function.

argCount
The number of arguments in an InvokeHelper specialization.

Remarks

Provides an implementation of the Invoke() method based on the specified number and type of arguments.

Members

Public Typedefs

Name	Description
`Traits`	A synonym for the class that defines the type of each event handler argument.

Public Constructors

Name	Description
InvokeHelper::InvokeHelper Constructor	Initializes a new instance of the InvokeHelper class.

Public Methods

Name	Description
InvokeHelper::Invoke Method	Calls the event handler whose signature contains the specified number of arguments.

Public Data Members

Name	Description
InvokeHelper::callback_ Data Member	Represents the event handler to call when an event occurs.

Inheritance Hierarchy

InvokeHelper

Requirements

Header: event.h

Namespace: Microsoft::WRL::Details

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