Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

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 _
)

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


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, 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.

Community Additions

Show:
© 2017 Microsoft