UI Automation Support for the TabItem Control Type

Note

This documentation is intended for .NET Framework developers who want to use the managed UI Automation classes defined in the System.Windows.Automation namespace. For the latest information about UI Automation, see Windows Automation API: UI Automation.

This topic provides information about UI Automation support for the TabItem control type. In UI Automation, a control type is a set of conditions that a control must meet in order to use the ControlTypeProperty property. The conditions include specific guidelines for UI Automation tree structure, UI Automation property values and control patterns.

A tab item control is used as the control within a tab control that selects a specific page to be shown in a window.

The following sections define the required UI Automation tree structure, properties, control patterns, and events for the TabItem control type. The UI Automation requirements apply to all tab item controls, whether Windows Presentation Foundation (WPF), Win32, or Windows Forms.

Required UI Automation Tree Structure

The following table depicts the control view and the content view of the UI Automation tree that pertains to tab item controls and describes what can be contained in each view. For more information on the UI Automation tree, see UI Automation Tree Overview.

Control View Content View
TabItem

  • Image (0 or 1)
  • Text
  • Pane

    • Various controls (0 or more)
TabItem

  • Pane

    • Various controls (0 or more)

Required UI Automation Properties

The following table lists the UI Automation properties whose value or definition is especially relevant to tab item controls. For more information on UI Automation properties, see UI Automation Properties for Clients.

UI Automation Property Value Notes
AutomationIdProperty See notes. The value of this property needs to be unique across all controls in an application.
BoundingRectangleProperty See notes. The outermost rectangle that contains the whole control.
ClickablePointProperty See notes. The tab item control must have a clickable point that causes the item to become selected.
IsKeyboardFocusableProperty See notes. If the control can receive keyboard focus, it must support this property.
NameProperty See notes. The tab item control is self-labeled.
LabeledByProperty Null The tab item control does not have a static text label.
ControlTypeProperty TabItem This value is the same for all UI frameworks.
LocalizedControlTypeProperty "tab item" Localized string corresponding to this control type.
IsContentElementProperty True The tab item control must always be content.
IsControlElementProperty True The tab item control must always be a control.

Required UI Automation Control Patterns

The following table lists the UI Automation control patterns required to be supported by tab item controls. For more information on control patterns, see UI Automation Control Patterns Overview.

Control Pattern Support Notes
ISelectionItemProvider Yes The tab item control must support SelectionItemPattern.
IInvokeProvider No The tab item control never supports InvokePattern.

Required UI Automation Events

The following table lists the UI Automation events required to be supported by all tab item controls. For more information about events, see UI Automation Events Overview.

UI Automation Event Support Notes
BoundingRectangleProperty property-changed event. Required None
IsOffscreenProperty property-changed event. Required None
IsEnabledProperty property-changed event. Required None
AutomationFocusChangedEvent Required None
ElementSelectedEvent Required None
ElementRemovedFromSelectionEvent Required None
StructureChangedEvent Required None

See Also

TabItem
UI Automation Control Types Overview
UI Automation Overview