Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Sets the state of the device's import/export port (IEport), door, or keypad.
Major code
Input buffer
The buffer at Irp->AssociatedIrp.SystemBuffer contains a CHANGER_SET_ACCESS structure indicating the element and the operation to perform.
Input buffer length
Parameters.DeviceIoControl.InputBufferLength in the I/O stack location indicates the size, in bytes, of the parameter buffer, which must be >= sizeof(CHANGER_SET_ACCESS).
Output buffer
None.
Output buffer length
None.
Status block
The Information field is set to the number of bytes set. The Status field is set to STATUS_SUCCESS, or possibly to STATUS_INFO_LENGTH_MISMATCH, STATUS_INSUFFICIENT_RESOURCES, STATUS_INVALID_DEVICE_REQUEST, or STATUS_INVALID_PARAMETER.
Requirements
Requirement | Value |
---|---|
Header | ntddchgr.h (include Ntddchgr.h) |