Suporte à Automação de IU para o tipo de controle Image
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 a imagem 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 os valores de propriedade e padrões de controle.
Image controls used as icons, informational graphics, and charts will support the Image control type. Os controles usados como plano de fundo ou imagens de marca d'água não suportará o tipo de controle de imagem.
The following sections define the required UI Automation tree structure, properties, control patterns, and events for the Image control type. The UI Automation requirements apply to all image 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 image controls and describes what can be contained in each view. For more information about the UI Automation tree, see Visão geral da árvore de automação de interface do usuário.
Control View |
Content View |
|---|---|
Image |
Imagem (depende se a imagem contém informações (com base no valor de IsContentElement propriedade)) |
Required UI Automation Properties
The following table lists the UI Automation properties whose value or definition is especially relevant to the Image control type. For more information about UI Automation properties, see UI Automation Properties for Clients.
UI Automation Property |
Value |
Notes |
|---|---|---|
See notes. |
The value of this property needs to be unique across all controls in an application. |
|
See notes. |
The outermost rectangle that contains the whole control. |
|
See notes. |
The image control’s clickable point must be a point within the bounding rectangle of the image control. |
|
See notes. |
If the control can receive keyboard focus, it must support this property. |
|
See notes. |
The Name property must be exposed for all image controls that contain information. Programmatic access to this information requires that a textual equivalent to the graphic be provided. If the image control is purely decorative, it must only show up in the control view of the UI Automation tree and is not required to have a name. UI frameworks must support an ALT or alternate text property on images that can be set from within their framework. This property will then map to the UI Automation Name property. |
|
See notes. |
If there is a static text label then this property must expose a reference to that control. |
|
Image |
This value is the same for all UI frameworks. |
|
"image" |
Localized string corresponding to the Image control type. |
|
See notes. |
The image control must be included in the content view of the UI Automation tree when it contains meaningful information not already exposed to the end user. |
|
True |
The image control is always included in the control view of the UI Automation tree. |
|
See notes. |
A propriedade HelpText expõe uma seqüência localizada que descreve a aparência visual real do controle (por exemplo, um quadrado vermelho com um 'X' em branco) ou outras informações de dica de ferramenta associado à imagem. This property must be supported when a long description is needed to convey more information about the image control. For example, a complicated chart or diagram. Esta propriedade é mapeado para as marcas HTML LongDesc e o Scalable Vector Graphics (SVG) Desc. Developers working with image controls must support a property to allow the visual description to be set on the control. Esta propriedade deve ser mapeada para a propriedade VisualDescription de automação da interface do usuário. |
|
See notes. |
If the image control represents state information about a particular item on the screen, the control should be contained within the item. When the image is contained within an item the item must support the status property and raise appropriate notifications when the status changes. If an image is a standalone control and is conveying status this property must be supported. |
Required UI Automation Control Patterns
The following table lists the UI Automation control patterns required to be supported by all image controls. For more information about control patterns, see Visão Geral de Padrões de Controle de Automação de Interface de Usuário.
Padrão de controle |
Support |
Notes |
|---|---|---|
Depends |
The image control supports the Grid Item pattern if the control is within a grid container. |
|
Depends |
The image control supports the Table Item pattern if the control is within a container that has header controls. |
|
Never |
If the image control contains a clickable image, the control should support a control type that supports the Invoke pattern, such as the Button control type. |
|
Never |
Image controls should not support the Selection Item pattern. |
Required UI Automation Events
The following table lists the UI Automation events required to be supported by all image controls. For more information on events, see Visão geral sobre eventos de automação de interface do usuário.
UI Automation Event |
Support |
Notes |
|---|---|---|
Never |
None |
|
Never |
None |
|
Never |
None |
|
Never |
None |
|
BoundingRectangleProperty property-changed event. |
Required |
None |
IsOffscreenProperty property-changed event. |
Required |
None |
IsEnabledProperty property-changed event. |
Required |
None |
NameProperty property-changed event. |
Required |
None |
Required |
None |
|
Required |
None |
Consulte também
Referência
Conceitos
Visão Geral dos Tipos de Controle de Automação de Interface do Usuário