INativeListener.OnSetFrameLength Method

Native (C++):

HRESULT OnSetFrameLength ( _FILETIME * fTime,void * pData,unsigned long Size,long FrameLengthDelta) ;

Parameters

fTime The time of the event. pData 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);

FrameLengthDelta Specifies the number of USB-defined bit times to be added or subtracted from the current frame length. The maximum increase or decrease per URB is 1.

Return Value

S_OK or standard OLE error code.

Remarks

Fired when URB packet with urb.UrbHeader.Function=URB_FUNCTION_SET_FRAME_LENGTH is received. See _URB_SET_FRAME_LENGTH for more details. The library decodes several parameters from this packet (see above).

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