argtraitshelper-structure.md

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Learn more about: ArgTraitsHelper Structure	ArgTraitsHelper Structure	09/21/2018	reference	event/Microsoft::WRL::Details::ArgTraitsHelper event/Microsoft::WRL::Details::ArgTraitsHelper::args	Microsoft::WRL::Details::ArgTraitsHelper structure Microsoft::WRL::Details::ArgTraitsHelper::args constant	e3f798da-0aef-4a57-95d3-d38c34c47d72

ArgTraitsHelper Structure

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

Syntax

template<typename TDelegateInterface>
struct ArgTraitsHelper;

Parameters

TDelegateInterface
A delegate interface.

Remarks

Helps define common characteristics of delegate arguments.

Members

Public Typedefs

Name	Description
methodType	A synonym for decltype(&TDelegateInterface::Invoke).
Traits	A synonym for ArgTraits<methodType>.

Public Constants

Name	Description
ArgTraitsHelper::args	Helps ArgTraits::args keep count of the number of parameters on the Invoke method of a delegate interface.

Inheritance Hierarchy

ArgTraitsHelper

Requirements

Header: event.h

Namespace: Microsoft::WRL::Details

ArgTraitsHelper::args

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

static const int args = Traits::args;

Remarks

Helps ArgTraitsHelper::args keep count of the number of parameters on the Invoke method of a delegate interface.