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AutomationFocusChangedEventHandler Delegate

Represents the method implemented by the UI Automation client application to handle the event raised by a UI Automation provider when the focus has changed.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

'Declaration
Public Delegate Sub AutomationFocusChangedEventHandler ( _
	sender As Object, _
	e As AutomationFocusChangedEventArgs _
)
'Usage
Dim instance As New AutomationFocusChangedEventHandler(AddressOf HandlerMethod)

Parameters

sender
Type: System.Object

The object that raised the event.

e
Type: System.Windows.Automation.AutomationFocusChangedEventArgs

Information about the event.

Use an AutomationFocusChangedEventHandler delegate to define the method that is called by a client to handle UI Automation focus-changed events.

The AutomationElement represented by sender might not have any cached properties or patterns, depending on whether the application subscribed to this event while a CacheRequest was active.

The following example implements a delegate to handle focus-changed events.

Private Sub OnFocusChanged(ByVal src As Object, ByVal e As AutomationFocusChangedEventArgs)
    Dim elementFocused As AutomationElement = DirectCast(src, AutomationElement)
    ' TODO: Do something in response to the focus change. 
End Sub 'OnFocusChanged

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
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