WDU_Transfer()

DWORD DLLCALLCONV WDU_Transfer	(	_In_ WDU_DEVICE_HANDLE	hDevice,
		_In_ DWORD	dwPipeNum,
		_In_ DWORD	fRead,
		_In_ DWORD	dwOptions,
		_In_ PVOID	pBuffer,
		_In_ DWORD	dwBufferSize,
		_Outptr_ PDWORD	pdwBytesTransferred,
		_In_ PBYTE	pSetupPacket,
		_In_ DWORD	dwTimeout
	)

Transfers data to/from a device.

Parameters

[in]	hDevice	A unique identifier for the device/interface.
[in]	dwPipeNum	The number of the pipe through which the data is transferred.
[in]	fRead	TRUE for read, FALSE for write.
[in]	dwOptions	Can be a bit-mask of any of the following options: USB_ISOCH_NOASAP - For isochronous data transfers. Setting this option instructs the lower driver (usbd.sys) to use a preset frame number (instead of the next available frame) while performing the data transfer. Use this flag if you notice unused frames during the transfer, on low-speed or full-speed devices (USB 1.1 only) and on Windows only. USB_ISOCH_RESET - Resets the isochronous pipe before the data transfer. It also resets the pipe after minor errors, consequently allowing the transfer to continue. USB_ISOCH_FULL_PACKETS_ONLY - When set, do not transfer less than packet size on isochronous pipes. USB_BULK_INT_URB_SIZE_OVERRIDE_128K - Limits the size of the USB Request Block (URB) to 128KB.
[in]	pBuffer	location of the data buffer
[in]	dwBufferSize	Number of the bytes to transfer.
[out]	pdwBytesTransferred	Number of bytes actually transferred.
[in]	pSetupPacket	8-bytes packet to transfer to control pipes.
[in]	dwTimeout	Maximum time, in milliseconds, to complete a transfer. Zero = infinite wait.

Returns

WinDriver Error Code

DWORD dwSize = 0x100, dwPipeNum = 0;
DWORD dwBytesTransferred;
PVOID pBuffer = malloc(dwSize);
BYTE SetupPacket[8];
 
WDU_Transfer(hDevice, dwPipeNum, MENU_RW_READ_PIPE, 0, pBuffer, dwSize,
    &dwBytesTransferred, SetupPacket, TRANSFER_TIMEOUT);