TabItem Control Type
This topic provides information about Microsoft UI Automation support for the TabItem control type.
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 where the UI framework/platform integrates UI Automation support for control types and control patterns.
This topic contains the following sections.
Typical Tree Structure
The following table depicts a typical control and 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 about the UI Automation tree, see UI Automation Tree Overview.
| Control View | Content View |
|---|---|
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Relevant Properties
The following table lists the UI Automation properties whose value or definition is especially relevant to the TabItem control type. For more information about UI Automation properties, see Retrieving Properties from UI Automation Elements.
| UI Automation Property | Value | Notes |
|---|---|---|
| UIA_AutomationIdPropertyId | See notes. | The value of this property must be unique among all peer elements in the raw view of the UI Automation tree. |
| UIA_BoundingRectanglePropertyId | See notes. | The outermost rectangle that contains the whole control. |
| UIA_ClickablePointPropertyId | See notes. | The tab item control must have a clickable point that causes the item to become selected. |
| UIA_ControllerForPropertyId | See 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. |
| UIA_ControlTypePropertyId | TabItem | This value is the same for all UI frameworks. |
| UIA_IsContentElementPropertyId | TRUE | The tab item control is always included in the content view of the UI Automation tree. |
| UIA_IsControlElementPropertyId | TRUE | The tab item control is always included in the control view of the UI Automation tree. |
| UIA_IsKeyboardFocusablePropertyId | See notes. | If the control can receive keyboard focus, it must support this property. |
| UIA_LabeledByPropertyId | Null | The tab item control does not have a static text label. |
| UIA_LocalizedControlTypePropertyId | See notes. | Localized string corresponding to the TabItem control type. The default value is "tab item" for en-US or English (United States). |
| UIA_NamePropertyId | See notes. | The tab item control self-labeled. |
Required Control Patterns
The following table lists the UI Automation control patterns required to be supported by all tab item controls. For more information on control patterns, see UI Automation Control Patterns Overview.
| Control Pattern | Support | Notes |
|---|---|---|
| ISelectionItemProvider | Required | The tab item control must support IUIAutomationSelectionItemPattern. |
| IInvokeProvider | Never | The tab item control never supports IUIAutomationInvokePattern. |
Required Events
The following table lists the UI Automation events that tab item controls are required to support. For more information on events, see UI Automation Events Overview.
| UI Automation Event | Notes |
|---|---|
| UIA_AutomationFocusChangedEventId | |
| UIA_BoundingRectanglePropertyId property-changed event. | |
| UIA_IsEnabledPropertyId property-changed event. | If the control supports the IsEnabled property, it must support this event. |
| UIA_IsOffscreenPropertyId property-changed event. | If the control supports the IsOffscreen property, it must support this event. |
| UIA_SelectionItem_ElementRemovedFromSelectionEventId | |
| UIA_SelectionItem_ElementSelectedEventId | |
| UIA_StructureChangedEventId |
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