UI Automation Support for the ToolBar Control Type

This topic provides information about Microsoft UI Automation support for the ToolBar control type. Tool bar controls enable end users to activate commands and tools contained within a application.

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

This topic contains the following sections.

Required UI Automation Tree Structure

The following table depicts the control view and the content view of the UI Automation tree that pertains to tool bar 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
  • ToolBar
    • Various controls (0 or more)
  • ToolBar
    • Various controls (0 or more)

A tool bar control can contain any type of control within its subtree. They most often contain buttons, combo boxes, and split buttons.

Required UI Automation Properties

The following table lists the UI Automation properties whose value or definition is especially relevant to the ToolBar control type. For more information about UI Automation properties, see UI Automation Properties for Clients.

UI Automation Property Value Notes
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. Supported if there is a bounding rectangle. If not every point within the bounding rectangle is clickable, and you perform specialized hit testing, then override and provide a clickable point.
UIA_ControlTypePropertyId ToolBar This value is the same for all UI frameworks.
UIA_IsContentElementPropertyId TRUE The tool bar control is always included in the content view of the UI Automation tree.
UIA_IsControlElementPropertyId TRUE The tool bar 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 A tool bar control never has a label.
UIA_LocalizedControlTypePropertyId See notes. Localized string corresponding to the ToolBar control type. The default value is "tool bar" for en-US or English (United States).
UIA_NamePropertyId Depends The tool bar control does not need a name unless more than one is used within an application. If more than one is present, each must have a distinguishing name (for example, Formatting or Outlining).

Required UI Automation Control Patterns

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

Control Pattern/Pattern Property Support/Value Notes
IDockProvider Depends If the tool bar can be docked to different parts of the screen, it must support the Dock control pattern.
IExpandCollapseProvider Depends If the tool bar can be expanded and collapsed to show more items, it must support the ExpandCollapse control pattern.
ITransformProvider Depends If the tool bar can be resized, rotated, or moved, it must support the Transform control pattern.

Required UI Automation Events

The following table lists the UI Automation events that tool bar controls are required to support. For more information on events, see UI Automation Events Overview.

UI Automation Event Notes
UIA_AutomationFocusChangedEventId None
UIA_BoundingRectanglePropertyId property-changed event. None
UIA_ExpandCollapseExpandCollapseStatePropertyId property-changed event. If the control supports the ExpandCollapse control pattern, it must support this 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_StructureChangedEventId None

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