File.cpp/File.h

//File.h
#pragma once
#include <Windows.h>
#include <assert.h>

HANDLE CreateFileWriteReadA(LPCSTR lpszFileName, BOOL DoRead);
HANDLE CreateFileWriteReadW(LPCWSTR lpszFileName, BOOL DoRead);

#ifdef _UNICODE
#define CreateFileWriteRead CreateFileWriteReadW
#else
#define CreateFileWriteRead CreateFileWriteReadA
#endif

//File.cpp
#include "File.h"

HANDLE CreateFileWriteReadA(LPCSTR lpszFileName, BOOL DoRead)
{
	return CreateFileA(lpszFileName, DoRead == FALSE ? GENERIC_READ : GENERIC_WRITE, DoRead ? FILE_SHARE_READ : FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
}

HANDLE CreateFileWriteReadW(LPCWSTR lpszFileName, BOOL DoRead)
{
	return CreateFileW(lpszFileName, DoRead == FALSE ? GENERIC_READ : GENERIC_WRITE, DoRead ? FILE_SHARE_READ : FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
}