File Handle I/O Targets in UMDF Drivers
A UMDF driver communicates with some devices by using a Windows file handle, as in the following examples:
A device that is exposed through the Windows socket API.
A device that is emulated using Windows named pipes.
A device that is emulated using the Windows file system.
The driver obtains the file handle by calling a Windows function such as socket, CreateFile, or CreateNamedPipe that returns a file handle.
A driver can bind this handle to a framework I/O target by using the FileHandle I/O target. The driver can then use the framework’s I/O target interface to send I/O requests to the file handle, thereby getting all the benefits of I/O targets.
The IWDFFileHandleTargetFactory interface creates an I/O target ...
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