I am a novice to WDK and currently working on filesystem minifilter passthrough. While going through it, i want to use some IRP_MJ_XX structures like IRP_MJ_DEVICE_CONTROL, IRP_MJ_DIRECTORY_CONTROL, IRP_MJ_QUERY_QUOTA,
IRP_MJ_QUERY_VOLUME_INFORMATION etc. But I didnt get how to create their instances to access their parameters or methods . Do we need to add them in FLT_REGISTER_FILTER? can plz anybody explain me how to use them?