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Proprietà UIElement.IsKeyboardFocusWithin

Gets a value indicating whether keyboard focus is anywhere within the element or its visual tree child elements. This is a dependency property.

Spazio dei nomi: System.Windows
Assembly: PresentationCore (in presentationcore.dll)
Spazio dei nomi XML:

public bool IsKeyboardFocusWithin { get; }
/** @property */
public final boolean get_IsKeyboardFocusWithin ()

public final function get IsKeyboardFocusWithin () : boolean

Non è possibile utilizzare questa proprietà in XAML.

Valore proprietà

true if keyboard focus is on the element or its child elements; otherwise, false.

Identifier field


Metadata properties set to true


Changes to the value of this property typically raise the IsKeyboardFocusWithinChanged event, unless a derived class has overridden OnIsKeyboardFocusWithinChanged to suppress the event.

You do not set this property directly, but you can set the focus to an element by calling Focus, or by making a MoveFocus request. Either of these method calls might change this property value.

IsKeyboardFocused and IsKeyboardFocusWithin are typically used within class event handlers for other input-related events, for instance to determine whether the element already has keyboard focus, or to make determinations when mouse events and keyboard events occur in conjunction.

Microsoft .NET Framework 3.0 è supportato in Windows Vista, Microsoft Windows XP SP2 e Windows Server 2003 SP1.

.NET Framework

Supportato in: