#include <windows.h>

BOOL CompressFileNTFSEx (const TCHAR *tcFileName, USHORT usState)
{	// Compress or uncompress the given file.
	//
	//	usState can be:
	//	0 = COMPRESSION_FORMAT_NONE
	//	1 = COMPRESSION_FORMAT_DEFAULT
	//	2 = COMPRESSION_FORMAT_LZNT1
	//
	//  Returns TRUE if successful, FALSE if an error occurred.
	//

	HANDLE		hFile;
	DWORD		dwBytesReturned;
	BOOL		bResult;

	//return FALSE;

	hFile = CreateFile (tcFileName,
					GENERIC_READ | GENERIC_WRITE,
					FILE_SHARE_DELETE + FILE_SHARE_READ + FILE_SHARE_WRITE,
					NULL,
					OPEN_EXISTING,
					FILE_ATTRIBUTE_NORMAL + FILE_FLAG_SEQUENTIAL_SCAN,
					NULL);
	if (hFile == INVALID_HANDLE_VALUE)
		return FALSE;
	bResult = DeviceIoControl (hFile,			// Handle to file or directory
						FSCTL_SET_COMPRESSION,	// dwIoControlCode
						&usState,				// Input buffer
						sizeof (USHORT),		// Size of input buffer
						NULL,					// lpOutBuffer
						0,						// nOutBufferSize
						&dwBytesReturned,		// Number of bytes returned
						NULL					// OVERLAPPED structure
						);
	if (!CloseHandle (hFile))
		return FALSE;
	return (bResult);
}

BOOL CompressFileNTFS (const TCHAR *tcFileName)
{
	return (CompressFileNTFSEx (tcFileName, COMPRESSION_FORMAT_DEFAULT));
}

BOOL UnCompressFileNTFS (const TCHAR *tcFileName)
{
	return (CompressFileNTFSEx (tcFileName, COMPRESSION_FORMAT_NONE));
}