A Memory Map Code Bit

[r3d dra6on]

The following bit of code is only the memory mapping part, but I am unsure about the output area of the code. I know how to bring in an input file, but I am unsure if this code sends out an output file. Also, is there a reference site that I can be pointed to about how to write to the output file. I am stuck on trying to figure out how to get the information from the first file (the input) to the second file (the output). I am pretty sure the code below is incomplete, only on the reason of I don't know how to connect it, and I can't find the correct reading sources to help me out. Thank you in advance.

#include <windows.h>
#include <iostream>
using namespace std;

int main()
{
HANDLE OutFile;
HANDLE InFile;
HANDLE InFileMap;
HANDLE OutFileMap;
PVOID InPVFile;
PVOID OutPVFile;
DWORD InDWFileSize;
DWORD OutDWFileSize;
int i;

//Opening an input file.

char OutFilename[] = “c:\\exe1\\testin.dat”;

OutFile = CreateFile(InFilename, 
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, 
NULL);
if (InFile == INVALID_HANDLE_VALUE)
{
	cout << “File could not be opened.”;
	return(FALSE);
}

//Creating a file-mapping kernel object for input.

InFileMap = CreatFileMapping(InFile,
	NULL,
	PAGE_READONLY,
	0,
	0,
	NULL);
if (InFileMap == NULL)
{
	cout << “File map could not be opened.”;
	ClosrHandle(InFile);
	return(FALSE);
}

//Mapping a view of the input file.

InPVFile = MapViewOfFile(InFileMap,
	FILE_MAP_READ,
	0,
	0,
	0);
if (InPVFile == NULL)
{
	cout << “Could not map view of file.”;
	CloseHandle(InFileMap);
	CloseHandle(InFile);
	return(FALSE);
}

//Gathering the size of the input file.

InDWFileSize = GetFileSize(InFile, NULL);

//Creating an output file.

char OutFilename[] = “c:\\exe1\\testout.dat”;

OutFile = CreateFile(OutFilename, 
GENERIC_READ | GENERIC_WRITE,
0,
 NULL,
 CREATE_NEW, 
FILE_ATTRIBUTE_NORMAL, 
NULL);
if (OutFile == INVALID_HANDLE_VALUE)
{
	cout << “File could not be created.”;
	return(FALSE);
}

//Creating a file-mapping kernel object for output.

OutFileMap = CreatFileMapping(OutFile,
	NULL,
	PAGE_WRITECOPY,
	0,
	0,
	NULL);
if (OutFileMap == NULL)
{
	cout << “File map could not be created.”;
	ClosrHandle(OutFile);
	return(FALSE);
}

//Mapping a view of the output file.

OutPVFile = MapViewOfFile(OutFileMap,
	FILE_MAP_COPY,
	0,
	0,
	0);
if (OutPVFile == NULL)
{
	cout << “Could not map view of file.”;
	CloseHandle(OutFileMap);
	CloseHandle(OutFile);
	return(FALSE);
}

//Switching the ASCII characters.

//???

//Housekeeping

UnmapViewOfFile(InPVFile);
UnmapViewOfFile(OutPVFile);
CloseHandle(InFileMap);
CloseHandle(OutFileMap);
CloseHandle(InFile);
CloseHandle(OutFile);
}

[Banfa]

This looks like a rather complex way to copy a file when you could just call CopyFileEx