WindowHelperService.RegisterWindowMessageHandler Method

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Registers the specified delegate for event notifications.

Namespace:  System.Activities.Design
Assembly:  System.Activities.Design (in System.Activities.Design.dll)

Syntax

'Declaration
Public Function RegisterWindowMessageHandler ( _
    callback As WindowMessage _
) As Boolean
'Usage
Dim instance As WindowHelperService
Dim callback As WindowMessage
Dim returnValue As Boolean

returnValue = instance.RegisterWindowMessageHandler(callback)
public bool RegisterWindowMessageHandler(
    WindowMessage callback
)
public:
bool RegisterWindowMessageHandler(
    WindowMessage^ callback
)
public function RegisterWindowMessageHandler(
    callback : WindowMessage
) : boolean
member RegisterWindowMessageHandler : 
        callback:WindowMessage -> bool 

Parameters

Return Value

Type: System.Boolean
true if the operation is successful; otherwise, false.

Exceptions

Exception Condition
ArgumentException

callback is nulla null reference (Nothing in Visual Basic).

.NET Framework Security

Platforms

Windows 7, Windows Vista, Windows XP SP2, 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.

Version Information

.NET Framework

Supported in: 4

See Also

Reference

WindowHelperService Class

WindowHelperService Members

System.Activities.Design Namespace