The UI Automation element objects are provided to clients in a hierarchical tree structure called the UI Automation tree.

Properties and methods exposed by the control pattern interfaces provide access to control-specific information and functionality. Information about an element is available to clients through properties exposed by the element's IUIAutomationElement interface, along with access to the element's control patterns. UI Automation exposes individual UI elements as objects that implement the IUIAutomationElement interface. Retrieve IUIAutomationElement interfaces for UI elements from the UI Automation tree. For more information, see Creating the CUIAutomation Object. The IUIAutomation pointer is the client's key to accessing all of the UI Automation functionality that is available to the client. To gain access to the core UI Automation service, a client must create an instance of the CUIAutomation object and retrieve an IUIAutomation interface pointer on the object. When a client calls the UI Automation API, it is actually calling the UI Automation core service which, in turn, makes calls to the interfaces implemented by the provider. Instead, a core service lies between the client and the provider. However, client applications do not work directly with providers.

Information about UI elements, and access to UI element functionality, is exposed to clients by UI Automation providers. Obtain an instance of the CUIAutomation object. They also include applications such as speech recognition programs and software testing tools, which use UI Automation instead of the mouse and keyboard to 'drive' other applications.įrom a UI Automation perspective, the main tasks that a UI Automation client application must accomplish include the following: UI Automation clients include assistive technology applications such as screen readers, which retrieve information about UI elements and present the information in a way that is usable for people with disabilities. This topic describes the main tasks involved in implementing a Microsoft UI Automation client application.Ī UI Automation client is any application that uses the UI Automation API to access information about UI elements, or to control applications through programmatic manipulation of their UI elements.

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