UI Automation Support for the TabItem Control Type

System_CAPS_ICON_note.jpg 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.

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 ViewContent View

  • Image (0 or 1)
  • Text
  • Pane

    • Various controls (0 or more)

  • Pane

    • Various controls (0 or more)

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 PropertyValueNotes
AutomationIdPropertySee notes.The value of this property needs to be unique across all controls in an application.
BoundingRectanglePropertySee notes.The outermost rectangle that contains the whole control.
ClickablePointPropertySee notes.The tab item control must have a clickable point that causes the item to become selected.
IsKeyboardFocusablePropertySee notes.If the control can receive keyboard focus, it must support this property.
NamePropertySee notes.The tab item control is self-labeled.
LabeledByPropertyNullThe tab item control does not have a static text label.
ControlTypePropertyTabItemThis value is the same for all UI frameworks.
LocalizedControlTypeProperty"tab item"Localized string corresponding to this control type.
IsContentElementPropertyTrueThe tab item control must always be content.
IsControlElementPropertyTrueThe tab item control must always be a control.
F:System.Windows.Automation.AutomationElementIdentifiers.ControllerForPropertySee notes.This property can be used as pointer to the associated tab pane. This is useful when it cannot host a pane as child of the tab item object.

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 PatternSupportNotes
ISelectionItemProviderYesThe tab item control must support SelectionItemPattern.
IInvokeProviderNoThe tab item control never supports InvokePattern.

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 EventSupportNotes
BoundingRectangleProperty property-changed event.RequiredNone
IsOffscreenProperty property-changed event.RequiredNone
IsEnabledProperty property-changed event.RequiredNone

UI Automation Control Types Overview
UI Automation Overview