Note
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Returns vendor and device identifiers.
Major code
Input buffer
Pointer to a DEVICE_DESCRIPTOR structure.
Input buffer length
Size of the input buffer.
Output buffer
Pointer to a DEVICE_DESCRIPTOR structure (same as lpInbuffer).
Output buffer length
Size of the output buffer.
Status block
Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.
Remarks
DeviceIoControl Parameters
When the DeviceloControl function is called with the IOCTL_GET_USB_DESCRIPTOR I/O control code, the caller must specify the address of a DEVICE_DESCRIPTOR structure as the function's lpOutbuffer parameter. The kernel-mode driver fills in the structure.
For more information, see Accessing Kernel-Mode Drivers for Still Image Devices.
Requirements
| Requirement | Value |
|---|---|
| Header | usbscan.h (include Usbscan.h) |