INativeListener.OnClassEndpoint Method

Native (C++):

HRESULT OnClassEndpoint ( _FILETIME * fTime,void * pData,unsigned long Size,unsigned char RequestTypeReservedBits,unsigned char Request,unsigned short Value,unsigned short Index) ;

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);

RequestTypeReservedBits Specifies a value, from 4 to 31 inclusive, that becomes part of the request type code in the USB-defined setup packet. This value is defined by USB for a class request or the vendor for a vendor request. Request Specifies the USB or vendor-defined request code for the device, interface, endpoint, or other device-defined target. Value Specifies a value, specific to Request, that becomes part of the USB-defined setup packet for the target. This value is defined by the creator of the code used in Request. Index Specifies the device-defined index, returned by a successful configuration request, if the request is for an endpoint or interface. Otherwise, Index must be zero.

Return Value

S_OK or standard OLE error code.

Remarks

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

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