UIElement UIElement UIElement UIElement Class

Definition

Namespace:: Windows.UI.Xaml Windows.UI.Xaml Windows.UI.Xaml Windows.UI.Xaml

Assemblies:: Windows.UI.Xaml.dll, Windows.dll

Edit

UIElement is a base class for most of the Windows Runtime UI objects that have visual appearance and can process basic input as part of your app's user interface.

public : class UIElement : DependencyObject, IAnimationObject, IUIElement, IUIElement2, IUIElement3, IUIElement4, IUIElement5, IUIElement7, IUIElement8, IUIElement9, IUIElementOverrides, IUIElementOverrides7, IUIElementOverrides8, IUIElementOverrides9

struct winrt::Windows::UI::Xaml::UIElement : DependencyObject, IAnimationObject, IUIElement, IUIElement2, IUIElement3, IUIElement4, IUIElement5, IUIElement7, IUIElement8, IUIElement9, IUIElementOverrides, IUIElementOverrides7, IUIElementOverrides8, IUIElementOverrides9

public class UIElement : DependencyObject, IAnimationObject, IUIElement, IUIElement2, IUIElement3, IUIElement4, IUIElement5, IUIElement7, IUIElement8, IUIElement9, IUIElementOverrides, IUIElementOverrides7, IUIElementOverrides8, IUIElementOverrides9

Public Class UIElement Inherits DependencyObject Implements IAnimationObject, IUIElement, IUIElement2, IUIElement3, IUIElement4, IUIElement5, IUIElement7, IUIElement8, IUIElement9, IUIElementOverrides, IUIElementOverrides7, IUIElementOverrides8, IUIElementOverrides9

Inheritance: DependencyObjectDependencyObject
UIElementUIElementUIElementUIElement

Attributes: ComposableAttribute ContractVersionAttribute MarshalingBehaviorAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute StaticAttribute ThreadingAttribute WebHostHiddenAttribute

Windows 10 requirements

Device family	Windows 10 (introduced v10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced v1)

Remarks

UIElement is a base element: it's a class that many other Windows Runtime classes inherit from in order to support the XAML UI element model. Properties, methods and events that UIElement defines are inherited by hundreds of other Windows Runtime classes.

Although UIElement defines the events for focus reporting (GotFocus, LostFocus ), UIElement does not define an API for programmatically setting the focus. This capability is defined by the Control class.

UIElement does not expose a public constructor. Typically, you don't derive classes from either UIElement or FrameworkElement directly. More typically used base classes for derived custom classes are these classes:

Specific controls that are not sealed (for example, TextBox )
Control base classes (Control, ContentControl, UserControl )
Navigation elements (Page, Frame )
Panel classes (the base class Panel, or specific non-sealed implementations such as Grid )

The UIElement class is used as the type parameter of many properties and methods in the Windows Runtime API. For example, the Child property of Border takes a single UIElement, which represents the element that the Border is drawn around. You can provide any UIElement -derived element for such a property, including custom controls that you define.

The UIElementCollection class provides a strongly typed collection of UIElement items. UIElementCollection is used as a type for properties of objects that contain several child elements, for example for the Children property of any Panel class.

UIElement API and features

UIElement extends DependencyObject, which is another base element, and adds support for various Windows Runtime feature areas.

Input, and events for responding to user interaction

Much of the input behavior for visible elements in a UI is defined in the UIElement class. This includes the events for keyboard, mouse, touch, drag-drop, and focus interactions. For more info, see Handle pointer input, Keyboard interactions, and Custom user interactions.

Prominent API of UIElement that support input and user interaction:

Pointer events: PointerPressed, PointerReleased, PointerMoved, PointerEntered, PointerExited
Key handling events: KeyDown, KeyUp
Focus: GotFocus, LostFocus
Pointer capture: CapturePointer, PointerCanceled, PointerCaptureLost, ReleasePointerCapture, PointerCaptures
Drag-drop: DragOver, Drop, DragEnter, DragLeave, AllowDrop
Properties that influence how basic input is processed: IsHitTestVisible, AllowDrop

Gestures and manipulations

Gestures and manipulations are also a way to handle input and user interaction. The API are listed out separately here because these events represent how the system interacts with device-level input actions and interprets them as a user interaction. Manipulations are a way to handle dynamic multi-touch interactions such as pinching and stretching. Together, the gestures and manipulations provide the touch patterns for touch interaction with UWP app. For more info, see Custom user interactions and Touch interaction design.

Prominent API of UIElement that support gestures and manipulations:

Gesture events: DoubleTapped, Holding, RightTapped, Tapped
Manipulation events: ManipulationCompleted, ManipulationDelta, ManipulationInertiaStarting, ManipulationStarted, ManipulationStarting
Properties that influence how gestures and manipulations are processed: IsHoldingEnabled and other Is*Enabled, ManipulationMode

Basic appearance

The Visibility and Opacity properties are frequently used to adjust the appearance of an element in your UI, especially within styles, templates, and visual states. The Clip, RenderTransform, and Transitions properties are each useful for producing interactions and different looks for your UI elements.

Basic layout

The UIElement class provides a starting point for layout characteristics with properties such as DesiredSize and the Arrange and Measure methods. FrameworkElement adds more layout capabilities. For more info, see Define layouts with XAML and FrameworkElement.

Routed events

Most of the input events of UIElement are routed events. A routed event enables a built-in event handling notification system, so that a parent object can handle input events from child objects in the object tree if the event remains unhandled. This input event behavior is useful for input area grouping, and for control compositing. For more info, see Events and routed events overview.

Prominent API of UIElement that support routed events: AddHandler, RemoveHandler, **Event* properties.

Other platform support

OnCreateAutomationPeer enables a class to use a custom AutomationPeer for its Microsoft UI Automation support.
RenderTransform, TransformToVisual, Projection, CompositeMode, CacheMode and FindSubElementsForTouchTargeting are useful for advanced UI layout scenarios.

UIElement dependency properties

Many of the read-write properties of the UIElement base element class are dependency properties. Dependency properties support some of the basic programming model features for a UWP app using C++, C#, or Visual Basic, such as styles and templates, data binding, XAML resource references, and property-changed logic. For more info on dependency properties and the features they support, see Dependency properties overview.

UIElement derived classes

The only Windows Runtime class that derives directly from UIElement is FrameworkElement. For a list of the classes that derive from FrameworkElement, see the "FrameworkElement derived classes" section of the FrameworkElement reference topic.

Properties

AccessKey AccessKey AccessKey AccessKey	Gets or sets the access key (mnemonic) for this element.
AccessKeyProperty AccessKeyProperty AccessKeyProperty AccessKeyProperty	Identifies for the AccessKey dependency property.
AccessKeyScopeOwner AccessKeyScopeOwner AccessKeyScopeOwner AccessKeyScopeOwner	Gets or sets a source element that provides the access key scope for this element, even if it's not in the visual tree of the source element.
AccessKeyScopeOwnerProperty AccessKeyScopeOwnerProperty AccessKeyScopeOwnerProperty AccessKeyScopeOwnerProperty	Identifies for the AccessKeyScopeOwner dependency property.
AllowDrop AllowDrop AllowDrop AllowDrop	Gets or sets a value that determines whether this UIElement can be a drop target for purposes of drag-and-drop operations.
AllowDropProperty AllowDropProperty AllowDropProperty AllowDropProperty	Identifies the AllowDrop dependency property.
BringIntoViewRequestedEvent BringIntoViewRequestedEvent BringIntoViewRequestedEvent BringIntoViewRequestedEvent	Gets the identifier for the BringIntoViewRequested routed event.
CacheMode CacheMode CacheMode CacheMode	Gets or sets a value that indicates that rendered content should be cached as a composited bitmap when possible.
CacheModeProperty CacheModeProperty CacheModeProperty CacheModeProperty	Identifies the CacheMode dependency property.
CanBeScrollAnchor CanBeScrollAnchor CanBeScrollAnchor CanBeScrollAnchor	Gets or sets a value that indicates whether the UIElement can be a candidate for scroll anchoring.
CanBeScrollAnchorProperty CanBeScrollAnchorProperty CanBeScrollAnchorProperty CanBeScrollAnchorProperty	Identifies the CanBeScrollAnchor dependency property.
CanDrag CanDrag CanDrag CanDrag	Gets or sets a value that indicates whether the element can be dragged as data in a drag-and-drop operation.
CanDragProperty CanDragProperty CanDragProperty CanDragProperty	Identifies the CanDrag dependency property.
CenterPoint CenterPoint CenterPoint CenterPoint	Gets or sets the center point of the element, which is the point about which rotation or scaling occurs. Affects the rendering position of the element.
CharacterReceivedEvent CharacterReceivedEvent CharacterReceivedEvent CharacterReceivedEvent	Gets the identifier for the CharacterReceived routed event.
Clip Clip Clip Clip	Gets or sets the RectangleGeometry used to define the outline of the contents of a UIElement.
ClipProperty ClipProperty ClipProperty ClipProperty	Identifies the Clip dependency property.
CompositeMode CompositeMode CompositeMode CompositeMode	Gets or sets a property that declares alternate composition and blending modes for the element in its parent layout and window. This is relevant for elements that are involved in a mixed XAML / Microsoft DirectX UI.
CompositeModeProperty CompositeModeProperty CompositeModeProperty CompositeModeProperty	Identifies the CompositeMode dependency property.
ContextFlyout ContextFlyout ContextFlyout ContextFlyout	Gets or sets the flyout associated with this element.
ContextFlyoutProperty ContextFlyoutProperty ContextFlyoutProperty ContextFlyoutProperty	Identifies for the ContextFlyout dependency property.
ContextRequestedEvent ContextRequestedEvent ContextRequestedEvent ContextRequestedEvent	Gets the identifier for the ContextRequested routed event.
DesiredSize DesiredSize DesiredSize DesiredSize	Gets the size that this UIElement computed during the measure pass of the layout process.
Dispatcher Dispatcher Dispatcher Dispatcher	Gets the CoreDispatcher that this object is associated with. The CoreDispatcher represents a facility that can access the DependencyObject on the UI thread even if the code is initiated by a non-UI thread. (Inherited from DependencyObject)
DoubleTappedEvent DoubleTappedEvent DoubleTappedEvent DoubleTappedEvent	Gets the identifier for the DoubleTapped routed event.
DragEnterEvent DragEnterEvent DragEnterEvent DragEnterEvent	Gets the identifier for the DragEnter routed event.
DragLeaveEvent DragLeaveEvent DragLeaveEvent DragLeaveEvent	Gets the identifier for the DragLeave routed event.
DragOverEvent DragOverEvent DragOverEvent DragOverEvent	Gets the identifier for the DragOver routed event.
DropEvent DropEvent DropEvent DropEvent	Gets the identifier for the Drop routed event.
ExitDisplayModeOnAccessKeyInvoked ExitDisplayModeOnAccessKeyInvoked ExitDisplayModeOnAccessKeyInvoked ExitDisplayModeOnAccessKeyInvoked	Gets or sets a value that specifies whether the access key display is dismissed when an access key is invoked.
ExitDisplayModeOnAccessKeyInvokedProperty ExitDisplayModeOnAccessKeyInvokedProperty ExitDisplayModeOnAccessKeyInvokedProperty ExitDisplayModeOnAccessKeyInvokedProperty	Identifies the ExitDisplayModeOnAccessKeyInvoked dependency property.
GettingFocusEvent GettingFocusEvent GettingFocusEvent GettingFocusEvent	Gets the identifier for the GettingFocus routed event.
HighContrastAdjustment HighContrastAdjustment HighContrastAdjustment HighContrastAdjustment	Gets or sets a value that indicates whether the framework automatically adjusts the element's visual properties when high contrast themes are enabled.
HighContrastAdjustmentProperty HighContrastAdjustmentProperty HighContrastAdjustmentProperty HighContrastAdjustmentProperty	Identifies the HighContrastAdjustment dependency property.
HoldingEvent HoldingEvent HoldingEvent HoldingEvent	Gets the identifier for the Holding routed event.
IsAccessKeyScope IsAccessKeyScope IsAccessKeyScope IsAccessKeyScope	Gets or sets a value that indicates whether an element defines its own access key scope.
IsAccessKeyScopeProperty IsAccessKeyScopeProperty IsAccessKeyScopeProperty IsAccessKeyScopeProperty	Identifies for the IsAccessKeyScope dependency property.
IsDoubleTapEnabled IsDoubleTapEnabled IsDoubleTapEnabled IsDoubleTapEnabled	Gets or sets a value that determines whether the DoubleTapped event can originate from that element.
IsDoubleTapEnabledProperty IsDoubleTapEnabledProperty IsDoubleTapEnabledProperty IsDoubleTapEnabledProperty	Identifies the IsDoubleTapEnabled dependency property.
IsHitTestVisible IsHitTestVisible IsHitTestVisible IsHitTestVisible	Gets or sets whether the contained area of this UIElement can return true values for hit testing.
IsHitTestVisibleProperty IsHitTestVisibleProperty IsHitTestVisibleProperty IsHitTestVisibleProperty	Identifies the IsHitTestVisible dependency property.
IsHoldingEnabled IsHoldingEnabled IsHoldingEnabled IsHoldingEnabled	Gets or sets a value that determines whether the Holding event can originate from that element.
IsHoldingEnabledProperty IsHoldingEnabledProperty IsHoldingEnabledProperty IsHoldingEnabledProperty	Identifies the IsHoldingEnabled dependency property.
IsRightTapEnabled IsRightTapEnabled IsRightTapEnabled IsRightTapEnabled	Gets or sets a value that determines whether the RightTapped event can originate from that element.
IsRightTapEnabledProperty IsRightTapEnabledProperty IsRightTapEnabledProperty IsRightTapEnabledProperty	Identifies the IsRightTapEnabled dependency property.
IsTapEnabled IsTapEnabled IsTapEnabled IsTapEnabled	Gets or sets a value that determines whether the Tapped event can originate from that element.
IsTapEnabledProperty IsTapEnabledProperty IsTapEnabledProperty IsTapEnabledProperty	Identifies the IsTapEnabled dependency property.
KeyboardAcceleratorPlacementMode KeyboardAcceleratorPlacementMode KeyboardAcceleratorPlacementMode KeyboardAcceleratorPlacementMode	Gets or sets a value that indicates whether the control tooltip displays the key combination for it's associated keyboard accelerator.
KeyboardAcceleratorPlacementModeProperty KeyboardAcceleratorPlacementModeProperty KeyboardAcceleratorPlacementModeProperty KeyboardAcceleratorPlacementModeProperty	Identifies the KeyboardAcceleratorPlacementMode dependency property.
KeyboardAcceleratorPlacementTarget KeyboardAcceleratorPlacementTarget KeyboardAcceleratorPlacementTarget KeyboardAcceleratorPlacementTarget	Gets or sets a value that indicates the control tooltip that displays the accelerator key combination.
KeyboardAcceleratorPlacementTargetProperty KeyboardAcceleratorPlacementTargetProperty KeyboardAcceleratorPlacementTargetProperty KeyboardAcceleratorPlacementTargetProperty	Identifies the KeyboardAcceleratorPlacementTarget dependency property.
KeyboardAccelerators KeyboardAccelerators KeyboardAccelerators KeyboardAccelerators	Gets the collection of key combinations that invoke an action using the keyboard. Accelerators are typically assigned to buttons or menu items. Example of a menu showing keyboard accelerators for various menu items
KeyDownEvent KeyDownEvent KeyDownEvent KeyDownEvent	Gets the identifier for the KeyDown routed event.
KeyTipHorizontalOffset KeyTipHorizontalOffset KeyTipHorizontalOffset KeyTipHorizontalOffset	Gets or sets a value that indicates how far left or right the Key Tip is placed in relation to the UIElement.
KeyTipHorizontalOffsetProperty KeyTipHorizontalOffsetProperty KeyTipHorizontalOffsetProperty KeyTipHorizontalOffsetProperty	Identifies the KeyTipHorizontalOffset dependency property.
KeyTipPlacementMode KeyTipPlacementMode KeyTipPlacementMode KeyTipPlacementMode	Gets or sets a value that indicates where the access key Key Tip is placed in relation to the boundary of the UIElement.
KeyTipPlacementModeProperty KeyTipPlacementModeProperty KeyTipPlacementModeProperty KeyTipPlacementModeProperty	Identifies the KeyTipPlacementMode dependency property.
KeyTipTarget KeyTipTarget KeyTipTarget KeyTipTarget	Gets or sets a value that indicates the element targeted by the access key Key Tip.
KeyTipTargetProperty KeyTipTargetProperty KeyTipTargetProperty KeyTipTargetProperty	Identifies the KeyTipTarget dependency property.
KeyTipVerticalOffset KeyTipVerticalOffset KeyTipVerticalOffset KeyTipVerticalOffset	Gets or sets a value that indicates how far up or down the Key Tip is placed in relation to the UI element.
KeyTipVerticalOffsetProperty KeyTipVerticalOffsetProperty KeyTipVerticalOffsetProperty KeyTipVerticalOffsetProperty	Identifies the KeyTipVerticalOffset dependency property.
KeyUpEvent KeyUpEvent KeyUpEvent KeyUpEvent	Gets the identifier for the KeyUp routed event.
Lights Lights Lights Lights	Gets the collection of XamlLight objects attached to this element.
LightsProperty LightsProperty LightsProperty LightsProperty	Identifies the Lights dependency property.
LosingFocusEvent LosingFocusEvent LosingFocusEvent LosingFocusEvent	Gets the identifier for the LosingFocus routed event.
ManipulationCompletedEvent ManipulationCompletedEvent ManipulationCompletedEvent ManipulationCompletedEvent	Gets the identifier for the ManipulationCompleted routed event.
ManipulationDeltaEvent ManipulationDeltaEvent ManipulationDeltaEvent ManipulationDeltaEvent	Gets the identifier for the ManipulationDelta routed event.
ManipulationInertiaStartingEvent ManipulationInertiaStartingEvent ManipulationInertiaStartingEvent ManipulationInertiaStartingEvent	Gets the identifier for the ManipulationInertiaStarting routed event.
ManipulationMode ManipulationMode ManipulationMode ManipulationMode	Gets or sets the ManipulationModes value used for UIElement behavior and interaction with gestures. Setting this value enables handling the manipulation events from this element in app code.
ManipulationModeProperty ManipulationModeProperty ManipulationModeProperty ManipulationModeProperty	Identifies the ManipulationMode dependency property.
ManipulationStartedEvent ManipulationStartedEvent ManipulationStartedEvent ManipulationStartedEvent	Gets the identifier for the ManipulationStarted routed event.
ManipulationStartingEvent ManipulationStartingEvent ManipulationStartingEvent ManipulationStartingEvent	Gets the identifier for the ManipulationStarting routed event.
NoFocusCandidateFoundEvent NoFocusCandidateFoundEvent NoFocusCandidateFoundEvent NoFocusCandidateFoundEvent	Gets the identifier for the NoFocusCandidateFound routed event.
Opacity Opacity Opacity Opacity	Gets or sets the degree of the object's opacity.
OpacityProperty OpacityProperty OpacityProperty OpacityProperty	Identifies the IsHitTestVisible dependency property.
OpacityTransition OpacityTransition OpacityTransition OpacityTransition	Gets or sets the ScalarTransition that animates changes to the Opacity property.
PointerCanceledEvent PointerCanceledEvent PointerCanceledEvent PointerCanceledEvent	Gets the identifier for the PointerCanceled routed event.
PointerCaptureLostEvent PointerCaptureLostEvent PointerCaptureLostEvent PointerCaptureLostEvent	Gets the identifier for the PointerCaptureLost routed event.
PointerCaptures PointerCaptures PointerCaptures PointerCaptures	Gets the set of all captured pointers, represented as Pointer values.
PointerCapturesProperty PointerCapturesProperty PointerCapturesProperty PointerCapturesProperty	Identifies the PointerCaptures dependency property.
PointerEnteredEvent PointerEnteredEvent PointerEnteredEvent PointerEnteredEvent	Gets the identifier for the PointerEntered routed event.
PointerExitedEvent PointerExitedEvent PointerExitedEvent PointerExitedEvent	Gets the identifier for the PointerExited routed event.
PointerMovedEvent PointerMovedEvent PointerMovedEvent PointerMovedEvent	Gets the identifier for the PointerMoved routed event.
PointerPressedEvent PointerPressedEvent PointerPressedEvent PointerPressedEvent	Gets the identifier for the PointerPressed routed event.
PointerReleasedEvent PointerReleasedEvent PointerReleasedEvent PointerReleasedEvent	Gets the identifier for the PointerReleased routed event.
PointerWheelChangedEvent PointerWheelChangedEvent PointerWheelChangedEvent PointerWheelChangedEvent	Gets the identifier for the PointerWheelChanged routed event.
PreviewKeyDownEvent PreviewKeyDownEvent PreviewKeyDownEvent PreviewKeyDownEvent	Gets the identifier for the PreviewKeyDown routed event.
PreviewKeyUpEvent PreviewKeyUpEvent PreviewKeyUpEvent PreviewKeyUpEvent	Gets the identifier for the PreviewKeyUp routed event.
Projection Projection Projection Projection	Gets or sets the perspective projection (3-D effect) to apply when rendering this element.
ProjectionProperty ProjectionProperty ProjectionProperty ProjectionProperty	Identifies the Projection dependency property.
RenderSize RenderSize RenderSize RenderSize	Gets the final render size of a UIElement. Use is not recommended, see Remarks.
RenderTransform RenderTransform RenderTransform RenderTransform	Gets or sets transform information that affects the rendering position of a UIElement.
RenderTransformOrigin RenderTransformOrigin RenderTransformOrigin RenderTransformOrigin	Gets or sets the origin point of any possible render transform declared by RenderTransform, relative to the bounds of the UIElement.
RenderTransformOriginProperty RenderTransformOriginProperty RenderTransformOriginProperty RenderTransformOriginProperty	Identifies the RenderTransformOrigin dependency property.
RenderTransformProperty RenderTransformProperty RenderTransformProperty RenderTransformProperty	Identifies the RenderTransform dependency property.
RightTappedEvent RightTappedEvent RightTappedEvent RightTappedEvent	Gets the identifier for the RightTapped routed event.
Rotation Rotation Rotation Rotation	Gets or sets the angle of clockwise rotation, in degrees. Rotates relative to the RotationAxis and the CenterPoint. Affects the rendering position of the element.
RotationAxis RotationAxis RotationAxis RotationAxis	Gets or sets the axis to rotate the element around.
RotationTransition RotationTransition RotationTransition RotationTransition	Gets or sets the ScalarTransition that animates changes to the Rotation property.
Scale Scale Scale Scale	Gets or sets the scale of the element. Scales relative to the element's CenterPoint. Affects the rendering position of the element.
ScaleTransition ScaleTransition ScaleTransition ScaleTransition	Gets or sets the Vector3Transition that animates changes to the Scale property.
TabFocusNavigation TabFocusNavigation TabFocusNavigation TabFocusNavigation	Gets or sets a value that modifies how tabbing and TabIndex work for this control. Note For Windows 10 Creators Update (build 10.0.15063) and newer, use this property of the UIElement base class instead of the TabNavigation property of a Control object.
TabFocusNavigationProperty TabFocusNavigationProperty TabFocusNavigationProperty TabFocusNavigationProperty	Identifies the TabFocusNavigation dependency property.
TappedEvent TappedEvent TappedEvent TappedEvent	Gets the identifier for the Tapped routed event.
Transform3D Transform3D Transform3D Transform3D	Gets or sets the 3-D transform effect to apply when rendering this element.
Transform3DProperty Transform3DProperty Transform3DProperty Transform3DProperty	Identifies the Transform3D dependency property.
TransformMatrix TransformMatrix TransformMatrix TransformMatrix	Gets or sets the transformation matrix to apply to the element.
Transitions Transitions Transitions Transitions	Gets or sets the collection of Transition style elements that apply to a UIElement.
TransitionsProperty TransitionsProperty TransitionsProperty TransitionsProperty	Identifies the Transitions dependency property.
Translation Translation Translation Translation	Gets or sets the x, y, and z rendering position of the element.
TranslationTransition TranslationTransition TranslationTransition TranslationTransition	Gets or sets the Vector3Transition that animates changes to the Translation property.
UseLayoutRounding UseLayoutRounding UseLayoutRounding UseLayoutRounding	Gets or sets a value that determines whether rendering for the object and its visual subtree should use rounding behavior that aligns rendering to whole pixels.
UseLayoutRoundingProperty UseLayoutRoundingProperty UseLayoutRoundingProperty UseLayoutRoundingProperty	Identifies the UseLayoutRounding dependency property.
Visibility Visibility Visibility Visibility	Gets or sets the visibility of a UIElement. A UIElement that is not visible is not rendered and does not communicate its desired size to layout.
VisibilityProperty VisibilityProperty VisibilityProperty VisibilityProperty	Identifies the Visibility dependency property.
XYFocusDownNavigationStrategy XYFocusDownNavigationStrategy XYFocusDownNavigationStrategy XYFocusDownNavigationStrategy	Gets or sets a value that specifies the strategy used to determine the target element of a down navigation.
XYFocusDownNavigationStrategyProperty XYFocusDownNavigationStrategyProperty XYFocusDownNavigationStrategyProperty XYFocusDownNavigationStrategyProperty	Identifies the XYFocusDownNavigationStrategy dependency property.
XYFocusKeyboardNavigation XYFocusKeyboardNavigation XYFocusKeyboardNavigation XYFocusKeyboardNavigation	Gets or sets a value that enables or disables navigation using the keyboard directional arrows.
XYFocusKeyboardNavigationProperty XYFocusKeyboardNavigationProperty XYFocusKeyboardNavigationProperty XYFocusKeyboardNavigationProperty	Identifies the XYFocusKeyboardNavigation dependency property.
XYFocusLeftNavigationStrategy XYFocusLeftNavigationStrategy XYFocusLeftNavigationStrategy XYFocusLeftNavigationStrategy	Gets or sets a value that specifies the strategy used to determine the target element of a left navigation.
XYFocusLeftNavigationStrategyProperty XYFocusLeftNavigationStrategyProperty XYFocusLeftNavigationStrategyProperty XYFocusLeftNavigationStrategyProperty	Identifies the XYFocusLeftNavigationStrategy dependency property.
XYFocusRightNavigationStrategy XYFocusRightNavigationStrategy XYFocusRightNavigationStrategy XYFocusRightNavigationStrategy	Gets or sets a value that specifies the strategy used to determine the target element of a right navigation.
XYFocusRightNavigationStrategyProperty XYFocusRightNavigationStrategyProperty XYFocusRightNavigationStrategyProperty XYFocusRightNavigationStrategyProperty	Identifies the XYFocusRightNavigationStrategy dependency property.
XYFocusUpNavigationStrategy XYFocusUpNavigationStrategy XYFocusUpNavigationStrategy XYFocusUpNavigationStrategy	Gets or sets a value that specifies the strategy used to determine the target element of an up navigation.
XYFocusUpNavigationStrategyProperty XYFocusUpNavigationStrategyProperty XYFocusUpNavigationStrategyProperty XYFocusUpNavigationStrategyProperty	Identifies the XYFocusUpNavigationStrategy dependency property.

Methods

AddHandler(RoutedEvent, Object, Boolean) AddHandler(RoutedEvent, Object, Boolean) AddHandler(RoutedEvent, Object, Boolean) AddHandler(RoutedEvent, Object, Boolean)	Adds a routed event handler for a specified routed event, adding the handler to the handler collection on the current element. Specify handledEventsToo as true to have the provided handler be invoked even if the event is handled elsewhere.
Arrange(Rect) Arrange(Rect) Arrange(Rect) Arrange(Rect)	Positions child objects and determines a size for a UIElement. Parent objects that implement custom layout for their child elements should call this method from their layout override implementations to form a recursive layout update.
CancelDirectManipulations() CancelDirectManipulations() CancelDirectManipulations() CancelDirectManipulations()	Cancels ongoing direct manipulation processing (system-defined panning/zooming) on any ScrollViewer parent that contains the current UIElement.
CapturePointer(Pointer) CapturePointer(Pointer) CapturePointer(Pointer) CapturePointer(Pointer)	Sets pointer capture to a UIElement. Once captured, only the element that has capture will fire pointer-related events.
ClearValue(DependencyProperty) ClearValue(DependencyProperty) ClearValue(DependencyProperty) ClearValue(DependencyProperty)	Clears the local value of a dependency property. (Inherited from DependencyObject)
FindSubElementsForTouchTargeting(Point, Rect) FindSubElementsForTouchTargeting(Point, Rect) FindSubElementsForTouchTargeting(Point, Rect) FindSubElementsForTouchTargeting(Point, Rect)	Enables a UIElement subclass to expose child elements that assist with resolving touch targeting.
GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty) GetAnimationBaseValue(DependencyProperty)	Returns any base value established for a dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject)
GetChildrenInTabFocusOrder() GetChildrenInTabFocusOrder() GetChildrenInTabFocusOrder() GetChildrenInTabFocusOrder()	Enables a UIElement subclass to expose child elements that take part in Tab focus.
GetValue(DependencyProperty) GetValue(DependencyProperty) GetValue(DependencyProperty) GetValue(DependencyProperty)	Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject)
InvalidateArrange() InvalidateArrange() InvalidateArrange() InvalidateArrange()	Invalidates the arrange state (layout) for a UIElement. After the invalidation, the UIElement will have its layout updated, which will occur asynchronously.
InvalidateMeasure() InvalidateMeasure() InvalidateMeasure() InvalidateMeasure()	Invalidates the measurement state (layout) for a UIElement.
Measure(Size) Measure(Size) Measure(Size) Measure(Size)	Updates the DesiredSize of a UIElement. Typically, objects that implement custom layout for their layout children call this method from their own MeasureOverride implementations to form a recursive layout update.
OnBringIntoViewRequested(BringIntoViewRequestedEventArgs) OnBringIntoViewRequested(BringIntoViewRequestedEventArgs) OnBringIntoViewRequested(BringIntoViewRequestedEventArgs) OnBringIntoViewRequested(BringIntoViewRequestedEventArgs)	Called before the BringIntoViewRequested event occurs.
OnCreateAutomationPeer() OnCreateAutomationPeer() OnCreateAutomationPeer() OnCreateAutomationPeer()	When implemented in a derived class, returns class-specific AutomationPeer implementations for the Microsoft UI Automation infrastructure.
OnDisconnectVisualChildren() OnDisconnectVisualChildren() OnDisconnectVisualChildren() OnDisconnectVisualChildren()	Override this method to implement how layout and logic should behave when items are removed from a class-specific content or children property.
OnKeyboardAcceleratorInvoked(KeyboardAcceleratorInvokedEventArgs) OnKeyboardAcceleratorInvoked(KeyboardAcceleratorInvokedEventArgs) OnKeyboardAcceleratorInvoked(KeyboardAcceleratorInvokedEventArgs) OnKeyboardAcceleratorInvoked(KeyboardAcceleratorInvokedEventArgs)	Called when a keyboard shortcut (or accelerator) is processed in your app. Override this method to handle how your app responds when a keyboard accelerator is invoked.
OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs) OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs) OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs) OnProcessKeyboardAccelerators(ProcessKeyboardAcceleratorEventArgs)	Called just before a keyboard shortcut (or accelerator) is processed in your app. Invoked whenever application code or internal processes call ProcessKeyboardAccelerators. Override this method to influence the default accelerator handling.
PopulatePropertyInfo(String, AnimationPropertyInfo) PopulatePropertyInfo(String, AnimationPropertyInfo) PopulatePropertyInfo(String, AnimationPropertyInfo) PopulatePropertyInfo(String, AnimationPropertyInfo)	Defines a property that can be animated.
PopulatePropertyInfoOverride(String, AnimationPropertyInfo) PopulatePropertyInfoOverride(String, AnimationPropertyInfo) PopulatePropertyInfoOverride(String, AnimationPropertyInfo) PopulatePropertyInfoOverride(String, AnimationPropertyInfo)	When overridden in a derived class, defines a property that can be animated.
ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty) ReadLocalValue(DependencyProperty)	Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject)
RegisterAsScrollPort(UIElement) RegisterAsScrollPort(UIElement) RegisterAsScrollPort(UIElement) RegisterAsScrollPort(UIElement)	Registers an element as representing a scrollable viewport.
RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback) RegisterPropertyChangedCallback(DependencyProperty,DependencyPropertyChangedCallback)	Registers a notification function for listening to changes to a specific DependencyProperty on this DependencyObject instance. (Inherited from DependencyObject)
ReleasePointerCapture(Pointer) ReleasePointerCapture(Pointer) ReleasePointerCapture(Pointer) ReleasePointerCapture(Pointer)	Releases pointer captures for capture of one specific pointer by this UIElement.
ReleasePointerCaptures() ReleasePointerCaptures() ReleasePointerCaptures() ReleasePointerCaptures()	Releases all pointer captures held by this element.
RemoveHandler(RoutedEvent, Object) RemoveHandler(RoutedEvent, Object) RemoveHandler(RoutedEvent, Object) RemoveHandler(RoutedEvent, Object)	Removes the specified routed event handler from this UIElement. Typically the handler in question was added by AddHandler.
SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object) SetValue(DependencyProperty,Object)	Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject)
StartAnimation(ICompositionAnimationBase) StartAnimation(ICompositionAnimationBase) StartAnimation(ICompositionAnimationBase) StartAnimation(ICompositionAnimationBase)	Begins the specified animation on the element.
StartBringIntoView() StartBringIntoView() StartBringIntoView() StartBringIntoView()	Initiates a request to the XAML framework to bring the element into view within any scrollable regions it is contained within.
StartBringIntoView(BringIntoViewOptions) StartBringIntoView(BringIntoViewOptions) StartBringIntoView(BringIntoViewOptions) StartBringIntoView(BringIntoViewOptions)	Initiates a request to the XAML framework to bring the element into view using the specified options.
StartDragAsync(PointerPoint) StartDragAsync(PointerPoint) StartDragAsync(PointerPoint) StartDragAsync(PointerPoint)	Initiates a drag-and-drop operation.
StopAnimation(ICompositionAnimationBase) StopAnimation(ICompositionAnimationBase) StopAnimation(ICompositionAnimationBase) StopAnimation(ICompositionAnimationBase)	Stops the specified animation on the element.
TransformToVisual(UIElement) TransformToVisual(UIElement) TransformToVisual(UIElement) TransformToVisual(UIElement)	Returns a transform object that can be used to transform coordinates from the UIElement to the specified object.
TryInvokeKeyboardAccelerator(ProcessKeyboardAcceleratorEventArgs) TryInvokeKeyboardAccelerator(ProcessKeyboardAcceleratorEventArgs) TryInvokeKeyboardAccelerator(ProcessKeyboardAcceleratorEventArgs) TryInvokeKeyboardAccelerator(ProcessKeyboardAcceleratorEventArgs)	Attempts to invoke a keyboard shortcut (or accelerator) by searching the entire visual tree of the UIElement for the shortcut.
TryStartDirectManipulation(Pointer) TryStartDirectManipulation(Pointer) TryStartDirectManipulation(Pointer) TryStartDirectManipulation(Pointer)	Resumes direct manipulation processing (system-defined panning/zooming) on any ScrollViewer parent that contains the current UIElement.
UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64) UnregisterPropertyChangedCallback(DependencyProperty,Int64)	Cancels a change notification that was previously registered by calling RegisterPropertyChangedCallback. (Inherited from DependencyObject)
UpdateLayout() UpdateLayout() UpdateLayout() UpdateLayout()	Ensures that all positions of child objects of a UIElement are properly updated for layout.

Events

AccessKeyDisplayDismissed AccessKeyDisplayDismissed AccessKeyDisplayDismissed AccessKeyDisplayDismissed	Occurs when the access key sequence is complete to notify controls that they should hide access key visuals.
AccessKeyDisplayRequested AccessKeyDisplayRequested AccessKeyDisplayRequested AccessKeyDisplayRequested	Occurs when the access key sequence is started to notify controls that they should show access key visuals.
AccessKeyInvoked AccessKeyInvoked AccessKeyInvoked AccessKeyInvoked	Occurs when a user completes an access key sequence to notify the element that the access key action should be invoked.
BringIntoViewRequested BringIntoViewRequested BringIntoViewRequested BringIntoViewRequested	Occurs when StartBringIntoView is called on this element or one of its descendants.
CharacterReceived CharacterReceived CharacterReceived CharacterReceived	Occurs when a single, composed character is received by the input queue.
ContextCanceled ContextCanceled ContextCanceled ContextCanceled	Occurs when a context input gesture continues into a manipulation gesture, to notify the element that the context flyout should not be opened.
ContextRequested ContextRequested ContextRequested ContextRequested	Occurs when the user has completed a context input gesture, such as a right-click.
DoubleTapped DoubleTapped DoubleTapped DoubleTapped	Occurs when an otherwise unhandled DoubleTap interaction occurs over the hit test area of this element.
DragEnter DragEnter DragEnter DragEnter	Occurs when the input system reports an underlying drag event with this element as the target.
DragLeave DragLeave DragLeave DragLeave	Occurs when the input system reports an underlying drag event with this element as the origin.
DragOver DragOver DragOver DragOver	Occurs when the input system reports an underlying drag event with this element as the potential drop target.
DragStarting DragStarting DragStarting DragStarting	Occurs when a drag operation is initiated.
Drop Drop Drop Drop	Occurs when the input system reports an underlying drop event with this element as the drop target.
DropCompleted DropCompleted DropCompleted DropCompleted	Occurs when a drag-and-drop operation is ended.
GettingFocus GettingFocus GettingFocus GettingFocus	Occurs before a UIElement receives focus. This event is raised synchronously to ensure focus isn't moved while the event is bubbling.
GotFocus GotFocus GotFocus GotFocus	Occurs when a UIElement receives focus. This event is raised asynchronously, so focus can move again before bubbling is complete.
Holding Holding Holding Holding	Occurs when an otherwise unhandled Hold interaction occurs over the hit test area of this element.
KeyDown KeyDown KeyDown KeyDown	Occurs when a keyboard key is pressed while the UIElement has focus.
KeyUp KeyUp KeyUp KeyUp	Occurs when a keyboard key is released while the UIElement has focus.
LosingFocus LosingFocus LosingFocus LosingFocus	Occurs before a UIElement loses focus. This event is raised synchronously to ensure focus isn't moved while the event is bubbling.
LostFocus LostFocus LostFocus LostFocus	Occurs when a UIElement loses focus. This event is raised asynchronously, so focus can move again before bubbling is complete.
ManipulationCompleted ManipulationCompleted ManipulationCompleted ManipulationCompleted	Occurs when a manipulation on the UIElement is complete.
ManipulationDelta ManipulationDelta ManipulationDelta ManipulationDelta	Occurs when the input device changes position during a manipulation.
ManipulationInertiaStarting ManipulationInertiaStarting ManipulationInertiaStarting ManipulationInertiaStarting	Occurs when the input device loses contact with the UIElement object during a manipulation and inertia begins.
ManipulationStarted ManipulationStarted ManipulationStarted ManipulationStarted	Occurs when an input device begins a manipulation on the UIElement.
ManipulationStarting ManipulationStarting ManipulationStarting ManipulationStarting	Occurs when the manipulation processor is first created.
NoFocusCandidateFound NoFocusCandidateFound NoFocusCandidateFound NoFocusCandidateFound	Occurs when a user attempts to move focus (via tab or directional arrows), but focus doesn't move because no focus candidate is found in the direction of movement.
PointerCanceled PointerCanceled PointerCanceled PointerCanceled	Occurs when a pointer that made contact abnormally loses contact.
PointerCaptureLost PointerCaptureLost PointerCaptureLost PointerCaptureLost	Occurs when pointer capture previously held by this element moves to another element or elsewhere.
PointerEntered PointerEntered PointerEntered PointerEntered	Occurs when a pointer enters the hit test area of this element.
PointerExited PointerExited PointerExited PointerExited	Occurs when a pointer leaves the hit test area of this element.
PointerMoved PointerMoved PointerMoved PointerMoved	Occurs when a pointer moves while the pointer remains within the hit test area of this element.
PointerPressed PointerPressed PointerPressed PointerPressed	Occurs when the pointer device initiates a Press action within this element.
PointerReleased PointerReleased PointerReleased PointerReleased	Occurs when the pointer device that previously initiated a Press action is released, while within this element. Note that the end of a Press action is not guaranteed to fire a PointerReleased event; other events may fire instead. For more info, see Remarks.
PointerWheelChanged PointerWheelChanged PointerWheelChanged PointerWheelChanged	Occurs when the delta value of a pointer wheel changes.
PreviewKeyDown PreviewKeyDown PreviewKeyDown PreviewKeyDown	Occurs when a keyboard key is pressed while the UIElement has focus.
PreviewKeyUp PreviewKeyUp PreviewKeyUp PreviewKeyUp	Occurs when a keyboard key is released while the UIElement has focus.
ProcessKeyboardAccelerators ProcessKeyboardAccelerators ProcessKeyboardAccelerators ProcessKeyboardAccelerators	Occurs when a keyboard shortcut (or accelerator) is pressed.
RightTapped RightTapped RightTapped RightTapped	Occurs when a right-tap input stimulus happens while the pointer is over the element.
Tapped Tapped Tapped Tapped	Occurs when an otherwise unhandled Tap interaction occurs over the hit test area of this element.