AutomationPropertyChangedEventHandler Delegate

 

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

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

public delegate void AutomationPropertyChangedEventHandler(
	Object^ sender,
	AutomationPropertyChangedEventArgs^ e
)

Parameters

sender
Type: System::Object^

The object that raised the event.

e
Type: System.Windows.Automation::AutomationPropertyChangedEventArgs^

Information about the event.

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.

Depending on the provider implementation, a property-changed event does not necessarily signify that the property value is different; it might just mean that the property was set, even to the same value. If your application needs to respond only to actual changes, it is your responsibility to track the state of the property.

In the following example, changes in the IsEnabled property of subscribed elements are handled.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 3.0
Return to top
Show: