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UI Automation Support for the MenuBar Control Type

NoteNote

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 MenuBar 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.

Menu bar controls are an example of controls that implement the MenuBar control type. Menu bars provide a means for users to activate commands and options contained in an application.

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

This topic contains the following sections.

The following table depicts the control view and the content view of the UI Automation tree that pertains to menu bar 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

MenuBar

  • MenuItem (1 or more)

  • Other controls (0 or many)

MenuBar

  • MenuItem (1 or more)

  • Other controls (0 or many)

Menu bar controls can contain other controls such as edit controls and combo boxes within its structure. These additional controls correspond to the "other controls" listed above in the control and content views.

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

UI Automation Property

Value

Notes

BoundingRectangleProperty

See notes.

The value exposed by this property must include all of the controls contained within it.

NameProperty

See notes.

The menu bar control does not need a name unless an application has more than one menu bar. If there is more than one menu bar in an application, then this property should be used to expose distinguishing names, such as "Formatting" or "Outlining."

LabeledByProperty

Null

Menu bar controls never have a label.

ControlTypeProperty

MenuBar

This value is the same for all UI frameworks.

LocalizedControlTypeProperty

"menu bar"

Localized string corresponding to the MenuBar control type.

IsContentElementProperty

True

The menu bar control is always included in the content view of the UI Automation tree.

IsControlElementProperty

True

The menu bar control is always included in the control view of the UI Automation tree.

IsOffscreenProperty

See notes.

The value of this property depends on whether the control is viewable on the screen.

OrientationProperty

Depends

This property exposes whether the menu bar control is horizontal or vertical.

IsKeyboardFocusableProperty

True

Menu bar controls are keyboard-focusable because the controls they contain can take keyboard focus.

HelpTextProperty

See notes.

No scenarios for when Help text is required for a menu bar control.

AcceleratorKeyProperty

Null

Menu bars never have accelerator keys.

AccessKeyProperty

"ALT"

Pressing the ALT key should always bring focus to the menu bar within the application.

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

Control Pattern

Support

Notes

IExpandCollapseProvider

Depends

If the control can be expanded or collapsed, implement IExpandCollapseProvider.

IDockProvider

Depends

If the control can be docked to different parts of the screen, implement IDockProvider.

ITransformProvider

Depends

If the control can be resized, rotated or moved it must implement ITransformProvider.

The following table lists the UI Automation events required to be supported by all menu bar controls. For more information on events, see UI Automation Events Overview.

UI Automation Event

Support/Value

Notes

BoundingRectangleProperty property-changed event.

Required

None

IsOffscreenProperty property-changed event.

Required

None

IsEnabledProperty property-changed event.

Required

None

ExpandCollapseStateProperty property-changed event.

Depends

None

AutomationFocusChangedEvent

Required

None

StructureChangedEvent

Required

None

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