IOCTL_CANCEL_IO IOCTL

Cancels activity on the specified USB transfer pipe that is associated with the specified device handle.

Major Code

IRP_MJ_DEVICE_CONTROL

Input Buffer

Pointer to a location containing a value of type PIPE_TYPE.

Input Buffer Length

Size of the input buffer.

Output Buffer

NULL.

Output Buffer Length

Zero.

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

hDevice
Device handle, obtained by calling CreateFile.
dwIoControlCode
IOCTL_CANCEL_IO
lpInBuffer
Pointer to a location containing a value of type PIPE_TYPE.
nInBufferSize
Size of the input buffer.
lpOutBuffer
NULL
nOutBufferSize
Zero.
lpBytesReturned
Pointer to a location to receive the number of bytes returned.
lpOverlapped
Optional pointer to an OVERLAPPED structure (described in the Microsoft Windows SDK documentation).

When the DeviceloControl function is called with the IOCTL_CANCEL_IO I/O control code, the caller must specify one of the PIPE_TYPE-typed values as the function's lpInBuffer parameter. This value indicates on which of the transfer pipes (interrupt, bulk IN, bulk OUT) the operation should be performed. For more information, see Accessing Kernel-Mode Drivers for Still Image Devices.

Requirements

   
Header usbscan.h (include Usbscan.h)