IWDFUsbRequestCompletionParams::GetDeviceControlTransferParameters method (wudfusb.h)
[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 GetDeviceControlTransferParameters method retrieves parameters that are associated with the completion of a device I/O control request.
Syntax
void GetDeviceControlTransferParameters(
[out, optional] IWDFMemory **ppMemory,
[out, optional] ULONG *pLengthTransferred,
[out, optional] SIZE_T *pOffset,
[out, optional] PWINUSB_SETUP_PACKET pSetupPacket
);
Parameters
[out, optional] ppMemory
A pointer to a variable that receives a pointer to the IWDFMemory interface, for access to the buffer for the device I/O control request. This parameter is optional and can be NULL.
[out, optional] pLengthTransferred
A pointer to a variable that receives the size, in bytes, of transferred data. This parameter is optional and can be NULL.
[out, optional] pOffset
A pointer to a variable that receives the offset, in bytes, into the buffer for the I/O control request. This parameter is optional and can be NULL.
[out, optional] pSetupPacket
A pointer that receives the WinUsb setup packet for the control transfer. This pointer is a PWINUSB_SETUP_PACKET data type that is defined as PVOID. This parameter is optional and can be NULL.
Return value
None
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 |