Mirror Driver Support in Video Miniport Drivers (Windows 2000 Model)
Mirror driver support for video miniport drivers is provided by Windows 2000 and later, so a miniport driver must not have any special code to attempt such support. See Mirror Drivers for more information about display drivers in mirroring systems.
The requirements for a mirror driver miniport driver are minimal. The only functions which must be implemented are DriverEntry, which is exported by the miniport driver, and the following:
Since there is no physical display device associated with a mirrored surface, all three of the functions shown in the preceding list can be empty implementations that always return success.
Note Starting with Windows 8, mirror drivers will not install on the system. For more information, see Mirror Drivers.