driver.c + driver.h

// Driver.c
#include <ntddk.h>
#include <wdf.h>
#include "Driver.h"
DRIVER_INITIALIZE DriverEntry;

NTSTATUS DriverEntry(struct _DRIVER_OBJECT* DriverObject, PUNICODE_STRING RegistryPath)
{
    UNREFERENCED_PARAMETER(DriverObject);
    UNREFERENCED_PARAMETER(RegistryPath);

    return STATUS_SUCCESS;
}

// Driver.h
#pragma once

#ifdef __cplusplus
extern "C" {
#endif

    __declspec(dllexport) UINT_PTR Control(PDEVICE_OBJECT DeviceObject, ULONG code) {
        UNREFERENCED_PARAMETER(DeviceObject);
        UINT_PTR Status = 1;
        if (code == 1) {
            DbgPrintEx(0, 0, "Hi");
            Status = 1;
        }
        return Status;
    }

#ifdef __cplusplus
}
#endif