LostFocusEventManager.StartListening Method

Begins listening for the LostFocus event on the given source, attaching an internal class handler to that source.

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

protected override void StartListening(
	Object source
)

Parameters

source
Type: System.Object

The object on which to start listening for the pertinent LostFocus event.

The provided source is checked for type to see if it is UIElement or ContentElement , and then adds the class handler for the appropriate event to that source.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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