UI Automation Support for the Slider Control Type

System_CAPS_ICON_note.jpg Note

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 Slider 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 types.

The Slider control is a composite control with buttons that enable a user with a mouse to set a numerical range or select from a set of items.

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

The following table depicts the Control View and the Content View of the UI Automation tree that pertains to slider controls and describes what can be contained in each view. For more information on the UI Automation tree, see UI Automation Tree Overview.

Control ViewContent View

- Button (2 or 4)
- Thumb (only 1)
- List Item (0 or more)

- List Item (0 or more)

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

UI Automation PropertyValueNotes
AutomationIdPropertySee notes.The value of this property needs to be unique across all controls in an application.
BoundingRectanglePropertySee notes.The outermost rectangle that contains the whole control.
ClickablePointPropertySee notesThe majority of slider controls must raise the NoClickablePointException because the entire bounding rectangle of the slider control is occupied by child controls.
IsKeyboardFocusablePropertySee notes.If the control can receive keyboard focus, it must support this property.
NamePropertySee notes.The name of the edit control is typically generated from a static text label. If there is not a static text label, a property value for Name must be assigned by the application developer. The Name property should never contain the textual contents of the edit control.
LabeledByPropertySee notes.If there is a static text label associated with the control, then this property must expose a reference to that control. If the text control is a subcomponent of another control, it will not have a LabeledBy property set.
ControlTypePropertySliderThis value is the same for all UI frameworks.
LocalizedControlTypeProperty"slider"Localized string corresponding to the Edit Control Type.
IsContentElementPropertyTrueThe edit control is always included in the content view of the UI Automation tree.
IsControlElementPropertyTrueThe edit control is always included in the control view of the UI Automation tree.

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

Control PatternSupportNotes
ISelectionProviderDependsA slider should support the Selection control pattern if the content represents one value among a discrete set of options. When the Selection control pattern is supported, the corresponding selection must be exposed as one or more child list items of the slider.
IRangeValueProviderDependsA slider should support the RangeValue control pattern if the content can be set to a value within a numerical range.
IValueProviderDependsA slider should support the Value control pattern if the content represents one value among a discrete set of options.

The following table lists the UI Automation events required to be supported by all slider controls.

For more information on events, see UI Automation Events Overview.

UI Automation EventSupportNotes
BoundingRectangleProperty property-changed eventRequiredNone
IsOffscreenProperty property-changed eventRequiredNone
IsEnabledProperty property-changed eventRequiredNone
ValueProperty property-changed eventDependsNone

UI Automation Control Types Overview
UI Automation Overview