IOCTL_SERIAL_GET_PROPERTIES IOCTL (ntddser.h)
The IOCTL_SERIAL_GET_PROPERTIES request returns information about the capabilities of a serial controller. The capabilities information is returned in a SERIAL_COMMPROP structure.
Major code
Input buffer
None.
Input buffer length
None.
Output buffer
The AssociatedIrp.SystemBuffer points to a client-allocated SERIAL_COMMPROP structure that the serial controller driver uses to output information about the capabilities of the serial controller.
Output buffer length
The Parameters.DeviceIoControl.OutputBufferLength is set to the size, in bytes, of a SERIAL_COMMPROP structure.
Status block
If the request is successful, the Information member is set to the size, in bytes, of a SERIAL_COMMPROP structure. Otherwise, the Information member is set to zero.
The Status member is set to one of the Generic Status Values for Serial Device Control Requests.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddser.h (include Ntddser.h) |