ICreateDeviceAccessAsync::Close method (deviceaccess.h)

The Close method performs cleanup after the asynchronous operation is completed and you retrieve the results.

Syntax

HRESULT Close();

Return value

This method supports standard return values, in addition to these:

Return code	Description
S_OK	The property value was retrieved successfully.
E_ILLEGAL_METHOD_CALL	The operation did not finish.

Remarks

If the binding is successful, it doesn't invalidate the interface that the GetResult method returns.

It isn't strictly necessary to call this method, because resources are cleaned up when the underlying object is deleted. But doing so allows the system to free up resources that are associated with the asynchronous binding. As such, it's good practice to call Close after you retrieve the results.

Requirements

Requirement	Value
Target Platform	Windows
Header	deviceaccess.h
Library	Deviceaccess.lib

See also

ICreateDeviceAccessAsync