UI Automation Support for the SplitButton Control Type
This topic provides information about Microsoft UI Automation support for the SplitButton control type.
The split button control enables an action to be performed on a control, and to expand the control to see a list of other possible actions that can be performed.
The following sections define the required UI Automation tree structure, properties, control patterns, and events for the SplitButton control type. The UI Automation requirements apply to all split button 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
- SplitButton Control Type Example
- 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 split button 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 SplitButton 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, override and provide a clickable point. |
| UIA_ControlTypePropertyId | SplitButton | This value is the same for all UI frameworks. |
| UIA_HelpTextPropertyId | See notes. | The help text can indicate the result of activating the split button, which is typically the same type of information presented through a tooltip. |
| UIA_IsContentElementPropertyId | TRUE | The split button control contains information for the end user. |
| UIA_IsControlElementPropertyId | TRUE | The split button control is visible to the end user. |
| UIA_IsKeyboardFocusablePropertyId | See notes. | If the control can receive keyboard focus, it must support this property. |
| UIA_LabeledByPropertyId | NULL | Split button controls do not have a static text label. |
| UIA_LocalizedControlTypePropertyId | See notes. | Localized string corresponding to the SplitButton control type. The default value is "split button" for en-US or English (United States). |
| UIA_NamePropertyId | "Back" | The split button control's name is displayed on the button. |
Required UI Automation Control Patterns
The following table lists the UI Automation control patterns required to be supported by all split button controls. For more information on control patterns, see UI Automation Control Patterns Overview.
| Control Pattern/Pattern Property | Support/Value | Notes |
|---|---|---|
| IExpandCollapseProvider | Required | Split buttons always have the ability to expand a list of options. |
| IInvokeProvider | Required | Split buttons always have a default action associated with IInvokeProvider::Invoke. |
Required UI Automation Events
The following table lists the UI Automation events that split button 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. | None |
| UIA_Invoke_InvokedEventId | 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_StructureChangedEventId | None |
SplitButton Control Type Example
The following image illustrates a control that implements the SplitButton control type.
.jpg "Example of a SplitButton Control")
| UI Automation Tree—Control View | UI Automation Tree—Content View |
|---|---|
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