FrameworkElement.MoveFocus(TraversalRequest) FrameworkElement.MoveFocus(TraversalRequest) FrameworkElement.MoveFocus(TraversalRequest) FrameworkElement.MoveFocus(TraversalRequest) Method

定義

以所提供的周遊方向,將鍵盤焦點從這個項目移到其他項目。Moves the keyboard focus away from this element and to another element in a provided traversal direction.

public:
 override bool MoveFocus(System::Windows::Input::TraversalRequest ^ request);
public override sealed bool MoveFocus (System.Windows.Input.TraversalRequest request);
override this.MoveFocus : System.Windows.Input.TraversalRequest -> bool
Public Overrides NotOverridable Function MoveFocus (request As TraversalRequest) As Boolean

參數

request
TraversalRequest TraversalRequest TraversalRequest TraversalRequest

要移動焦點的方向,以列舉型別 (Enumeration) 的值表示。The direction that focus is to be moved, as a value of the enumeration.

傳回

若成功移動焦點則傳回 true,若所指定之方向的目標項目不存在,或無法成為鍵盤導向,則傳回 falseReturns true if focus is moved successfully; false if the target element in direction as specified does not exist or could not be keyboard focused.

範例

下列範例會實作處理數種可能的按鈕輸入處理常式。The following example implements a handler that handles several possible button inputs. 每個按鈕表示可能發生FocusNavigationDirectionEach button represents a possible FocusNavigationDirection. 處理常式會追蹤目前的鍵盤焦點和呼叫的項目MoveFocus該項目,指定適當FocusNavigationDirection初始化為TraversalRequest類型提供的參數。The handler tracks the element with current keyboard focus, and calls MoveFocus on that element, by specifying the appropriate FocusNavigationDirection as initialization for the TraversalRequest type parameter provided.

// Creating a FocusNavigationDirection object and setting it to a
// local field that contains the direction selected.
FocusNavigationDirection focusDirection = _focusMoveValue;

// MoveFocus takes a TraveralReqest as its argument.
TraversalRequest request = new TraversalRequest(focusDirection);

// Gets the element with keyboard focus.
UIElement elementWithFocus = Keyboard.FocusedElement as UIElement;

// Change keyboard focus.
if (elementWithFocus != null)
{
    elementWithFocus.MoveFocus(request);
}
' Creating a FocusNavigationDirection object and setting it to a
' local field that contains the direction selected.
Dim focusDirection As FocusNavigationDirection = _focusMoveValue

' MoveFocus takes a TraveralReqest as its argument.
Dim request As New TraversalRequest(focusDirection)

' Gets the element with keyboard focus.
Dim elementWithFocus As UIElement = TryCast(Keyboard.FocusedElement, UIElement)

' Change keyboard focus.
If elementWithFocus IsNot Nothing Then
	elementWithFocus.MoveFocus(request)
End If

備註

此實作會覆寫UIElement.MoveFocus並密封方法。This implementation overrides UIElement.MoveFocus and seals the method.

適用於

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