IWDFUsbInterface::RetrieveUsbPipeObject method (wudfusb.h)

Artikel
02/22/2024

[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

The RetrieveUsbPipeObject method retrieves a USB pipe object for the specified pipe index.

Syntax

HRESULT RetrieveUsbPipeObject(
  [in]  UCHAR             PipeIndex,
  [out] IWDFUsbTargetPipe **ppPipe
);

Parameters

[in] PipeIndex

The index of the USB pipe object to retrieve.

[out] ppPipe

A pointer to a variable that receives a pointer to the IWDFUsbTargetPipe interface for the USB pipe object whose index is specified by PipeIndex.

Return value

RetrieveUsbPipeObject returns one of the following values:

Return code	Description
S_OK	RetrieveUsbPipeObject successfully retrieved the USB pipe object.
E_OUTOFMEMORY	RetrieveUsbPipeObject encountered an allocation failure.
An error code that is defined in Winerror.h	This value corresponds to the error code that the WinUsb API returned.

Remarks

A UMDF driver can call the methods of the IWDFUsbTargetPipe interface that the RetrieveUsbPipeObject method retrieves to obtain the type of pipe and other information.

Examples

For a code example of how to use theRetrieveUsbPipeObject method, see IWDFUsbInterface::GetNumEndPoints.

Requirements

Requirement	Value
End of support	Unavailable in UMDF 2.0 and later.
Target Platform	Desktop
Minimum UMDF version	1.5
Header	wudfusb.h (include Wudfusb.h)
DLL	WUDFx.dll

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