IUIAutomationActiveTextPositionChangedEventHandler::HandleActiveTextPositionChangedEvent method (uiautomationclient.h)
Handles a Microsoft UI Automation active text position change event.
Note This method is implemented by the application to handle events that it has subscribed to by calling AddActiveTextPositionChangedEventHandler.
Syntax
HRESULT HandleActiveTextPositionChangedEvent(
[in] IUIAutomationElement *sender,
IUIAutomationTextRange *range
);
Parameters
[in] sender
A pointer to the UI Automation element that raised the event.
range
A span of continuous text in a container that supports the IUIAutomationTextPattern interface.
Return value
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
Before implementing an event handler, you should be familiar with the threading issues described in Understanding Threading Issues.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1809 [desktop apps only] |
| Minimum supported server | Windows Server, version 1709 [desktop apps only] |
| Target Platform | Windows |
| Header | uiautomationclient.h (include UIAutomation.h) |
| DLL | UIAutomationCore.dll |