UI Automation Support for the 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, whether Microsoft Windows Presentation Foundation (WPF), Microsoft Win32, or Windows Forms.
This topic contains the following sections.
- Required UI Automation Tree Structure
- Required UI Automation Properties
- Required UI Automation Control Patterns
- Required UI Automation Events
- Related Topics
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 about the UI Automation tree, see UI Automation Tree Overview.
Control View | Content View |
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Required UI Automation 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 UI Automation Properties for Clients.
UI Automation Property | Value | Notes |
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UIA_AutomationIdPropertyId | See notes. | The value of this property needs to be unique across all controls in an application. |
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 UI Automation 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/Pattern Property | Support/Value | Notes |
---|---|---|
ISelectionItemProvider | Yes | The tab item control must support IUIAutomationSelectionItemPattern. |
IInvokeProvider | No | The tab item control never supports IUIAutomationInvokePattern. |
Required UI Automation 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 |
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UIA_AutomationFocusChangedEventId | None |
UIA_BoundingRectanglePropertyId property-changed event. | None |
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 | None |
UIA_SelectionItem_ElementSelectedEventId | None |
UIA_StructureChangedEventId | None |