ddcutil_sys
pub unsafe extern "C" fn ddca_get_any_vcp_value( ddca_dh: DDCA_Display_Handle, feature_code: DDCA_Vcp_Feature_Code, value_type: DDCA_Vcp_Value_Type_Parm, pvalrec: *mut *mut DDCA_Any_Vcp_Value) -> DDCA_Status