| 摘要 |
<p>A first computer receives data of a user interface device over a network from a second computer, wherein the data of the user interface device is received in response to a change occurring at the user interface device. In response to a request from a requesting entity in the first computer, a module in the first computer determines whether the data of the user interface device has been received by the first computer. In response to determining that the data of the user interface device has been received, the module provides the received data to the requesting entity in response to the request, and in response to determining that the data of the user interface device has not been received, the module provides an indication to the requesting entity that no change has occurred at the user interface device.</p> |
