Gets the reference counted gamma interface for a display.
ADLX_RESULT GetGamma (IADLXDisplay * pDisplay, IADLXDisplayGamma ** ppDispGamma)
[in]pDisplay IADLXDisplay* The pointer to the display interface.
[out]ppDispGamma IADLXDisplayGamma** The address of a pointer to the returned interface. If the interface is not successfully returned, the method sets the dereferenced address *ppDispGamma to nullptr.
If the interface is successfully returned, ADLX_OK is returned.
If the interface is not successfully returned, an error code is returned.
Refer to ADLX_RESULT for success codes and error codes.
The returned interface must be discarded with Release when it is no longer needed.
In C++ when using a smart pointer for the returned interface there is no need to call Release because the smart pointer calls it internally.