idebugeventcallback2.md

description	title	ms.date	ms.topic	f1_keywords	helpviewer_keywords	author	ms.author	manager	ms.subservice
This interface is used by the debug engine (DE) to send debug events to the session debug manager (SDM).	IDebugEventCallback2	11/04/2016	reference	IDebugEventCallback2	IDebugEventCallback2	maiak	maiak	mijacobs	debug-diagnostics

IDebugEventCallback2

This interface is used by the debug engine (DE) to send debug events to the session debug manager (SDM).

Syntax

IDebugEventCallback2 : IUnknown

Notes for Implementers

Visual Studio implements this interface to receive events from a debug engine.

Notes for Callers

A debug engine typically receives this interface when the SDM calls Attach, Attach, or LaunchSuspended. A debug engine sends events to the SDM by calling Event.

Methods in Vtable Order

The following table shows the methods of IDebugEventCallback2.

Method	Description
Event	Sends notification of debugging events to the SDM.

Remarks

Although EvaluateSync and EvaluateAsync specify that they take an IDebugEventCallback2 interface, this is not the case, and the interface pointer will always be a null value. Instead, the debug engine must use the IDebugEventCallback2 interface received in the call to Attach, Attach, or LaunchSuspended.

If a package implements IDebugEventCallback in managed code, it is strongly advised that xref:System.Runtime.InteropServices.Marshal.ReleaseComObject%2A be invoked on the various interfaces that are passed to Event.

Requirements

Header: msdbg.h

Namespace: Microsoft.VisualStudio.Debugger.Interop

Assembly: Microsoft.VisualStudio.Debugger.Interop.dll

See also

• Core Interfaces
• LaunchSuspended
• Attach
• Attach