INativeListener.OnBulkOrInterruptTransfer Method

Native (C++):

HRESULT OnBulkOrInterruptTransfer ( _FILETIME * fTime,void * Data,unsigned long Size,void * Payload,unsigned long PayloadSize) ;

Parameters

fTime The time of the event. Data Pointer to a USBPACKET. Use it to manually parse all fields. See MFCSample for more details. Size Total size of USBPACKET and all payload data. Equals to nSize variable:

C++

          USBPACKET packet;
          ULONG nSize = packet->Size;

          USBPACKET_URB* pUrb = (USBPACKET_URB*)packet;
          ATLASSERT(pUrb->Size==nSize);

Payload Pointer to payload that trails after all headers. Use it to manually parse all fields. See MFCSample for more details. Note that in headers-only mode this pointer is invalid. PayloadSize The size of the payload. This parameter is zero when in headers-only mode. Equals to dwDataLength variable:

C++

          _URB_BULK_OR_INTERRUPT_TRANSFER &r = pUrb->urb.UrbBulkOrInterruptTransfer;
           DWORD dwDataLength = r.TransferBufferLength;

Return Value

S_OK or standard OLE error code.

Remarks

Fired when URB packet with urb.UrbHeader.Function=URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER is received. See _URB_BULK_OR_INTERRUPT_TRANSFERfor more details.

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