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ThreadMessageEventHandler Delegate

Represents the method that handles the ThreadFilterMessage and ThreadPreprocessMessage events.

Namespace:  System.Windows.Interop
Assembly:  WindowsBase (in WindowsBase.dll)

public delegate void ThreadMessageEventHandler(
	ref MSG msg,
	ref bool handled
In XAML, you can use delegates but you cannot define your own.


Type: System.Windows.Interop.MSG%

A structure with the message data.

Type: System.Boolean%

true if the message was handled; otherwise, false.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0