UI Automation Support for the Thumb Control Type

Observação

Esta documentação destina.Os desenvolvedores do NET Framework que desejam usar o gerenciado UI Automation classes definidas na System.Windows.Automation namespace.As informações mais recentes sobre UI Automation, consulte API de automação do Windows: Automação da interface do usuário.

Este tópico fornece informações sobre UI Automation suporte para o Thumb o tipo de controle. In UI Automation, a control type is a set of conditions that a control must meet in order to use the ControlTypeProperty property. As condições incluem as diretrizes específicas para UI Automation estrutura de árvore, UI Automation valores de propriedade e padrões de controle.

Thumb controls provide the functionality that enables a control to be moved (or dragged), such as a scroll bar button, or resized, such as a window resizing widget. Os controles Thumb também podem ser implementados como Movível bordas dos painéis. Note that it does not provide drag-and-drop functionality. Os controles Thumb podem receber o foco do mouse, mas geralmente não foco do teclado. The control developer must implement the control so that it acts appropriately (can be dragged or resized).

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

Este tópico contém as seguintes seções.

• Required UI Automation Tree Structure
• Required UI Automation Properties
• Required UI Automation Control Patterns
• Required UI Automation Events
• Tópicos relacionados

Required UI Automation Tree Structure

The following table depicts the control view and the content view of the UI Automation tree that pertains to thumb controls and describes what can be contained in each view. For more information on the UI Automation tree, see Visão geral da árvore de automação de interface do usuário.

Control View	Content View
Thumb	Not applicable

Thumb controls never appear in Content View because they only exist for being manipulated with a mouse. Their functionality is exposed though another control pattern, such as Scroll Pattern, Transform Pattern, or RangeValue Pattern, being supported on the Thumb container.

Required UI Automation Properties

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

UI Automation Property	Value	Notes
AutomationIdProperty	See notes.	The value of this property needs to be unique across all controls in an application.
BoundingRectangleProperty	See notes.	The outermost rectangle that contains the whole control.
ClickablePointProperty	See notes.	Any point within the visible client area of the Thumb control.
IsKeyboardFocusableProperty	See notes.	If the control can receive keyboard focus, it must support this property.
NameProperty	Null	O controle Thumb não está disponível no modo de exibição de conteúdo da árvore de automação da interface do usuário, portanto, não requer um nome.
LabeledByProperty	Null	Thumb controls never have a label.
ControlTypeProperty	Thumb	This value is the same for all UI frameworks.
LocalizedControlTypeProperty	"thumb"	Localized string corresponding to the Thumb control type.
IsContentElementProperty	False	The Thumb control is never content.
IsControlElementProperty	True	The Thumb control must always be a control.

Required UI Automation Control Patterns

A tabela a seguir listas os UI Automation padrões de controle necessário para ser suportadas por controles do polegar. For more information on control patterns, see Visão Geral de Padrões de Controle de Automação de Interface de Usuário.

Control Pattern/Pattern Property	Support/Value	Notes
ITransformProvider	Required	Permite o controle thumb deve ser movido na tela.

Required UI Automation Events

The following table lists the UI Automation events required to be supported by all thumb controls. For more information about events, see Visão geral sobre eventos de automação de interface do usuário.

UI Automation Event	Support	Notes
BoundingRectangleProperty property-changed event.	Required	None
IsOffscreenProperty property-changed event.	Required	None
IsEnabledProperty property-changed event.	Required	None
AutomationFocusChangedEvent	Required	None
StructureChangedEvent	Required	None

Consulte também

Referência

Thumb

Conceitos

Visão Geral dos Tipos de Controle de Automação de Interface do Usuário

UI Automation Overview