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Application.RegisterMessageLoop Method

Registers a callback for checking whether the message loop is running in hosted environments.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public static void RegisterMessageLoop(
	Application..::..MessageLoopCallback callback
)

Parameters

callback
Type: System.Windows.Forms.Application.MessageLoopCallback
The method to call when Windows Forms needs to check if the hosting environment is still sending messages.

This method is used when hosting Windows Forms in another environment, such as an unmanaged application. In hosted environments, the MessageLoop property will always return false if Windows Forms is not processing messages. Use this callback to tell Windows Forms if the hosting environment is still processing messages.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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