IOCTL_UCMTCPCI_PORT_CONTROLLER_DISPLAYPORT_HPD_STATUS_CHANGED IOCTL (ucmtcpciportcontrollerrequests.h)
Notifies the client driver that the hot-plug detect status of the DisplayPort connection has changed so that the driver can perform additional tasks.
Major code
Input buffer
A pointer to a UCMTCPCI_PORT_CONTROLLER_DISPLAYPORT_HPD_STATUS_CHANGED_IN_PARAMS structure that contains status information.
Input buffer length
The size of UCMTCPCI_PORT_CONTROLLER_DISPLAYPORT_HPD_STATUS_CHANGED_IN_PARAMS.
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
The UcmTcpciCx class extension sends this IOCTL request when the DisplayPort mode status changes. The client driver can determine the new status based on the values passed in the supplied structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10 |
| Minimum supported server | Windows Server 2016 |
| Header | ucmtcpciportcontrollerrequests.h |
See also
Creating IOCTL Requests in Drivers
WdfIoTargetSendInternalIoctlOthersSynchronously
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