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winrt::from_abi function template (C++/WinRT)

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Important

As of version 10.0.17763.0 (Windows 10, version 1809) of the Windows SDK, winrt::from_abi is obsolete. Use winrt::get_self instead.

A helper function which, given an object of a projected type, retrieves a pointer to the implementation. For more details, and code examples, see Instantiating and returning implementation types and interfaces.

Syntax

template <typename D, typename I>
D* from_abi(I const& from) noexcept;

Template parameters

typename D An implementation type.

typename I A projected type.

Parameters

from An object of a projected type, a pointer to whose implementation to retrieve.

Return value

A pointer to the implementation object that implements the interface object.

Requirements

Minimum supported SDK: Windows SDK version 10.0.17134.0 (Windows 10, version 1803)

Namespace: winrt

Header: %WindowsSdkDir%Include<WindowsTargetPlatformVersion>\cppwinrt\winrt\base.h (included by default)

See also