C / C++ / MFC

error C2440: '=' : cannot convert from 'void *' to 'FL_FILE *'

void main()
{
	FL_FILE *file;

	// Initialise media
	media_init();

	// Initialise File IO Library
	fl_init();

	// Attach media access functions to library
	if (fl_attach_media(media_read, media_write) != FAT_INIT_OK)
	{
		printf("ERROR: Media attach failed\n");
		return; 
	}

	// List root directory
	fl_listdirectory("/");

	// Create File
	file = fl_fopen("/file.bin", "w");
	if (file)
	{
		// Write some data
		unsigned char data[] = { 1, 2, 3, 4 };
		if (fl_fwrite(data, 1, sizeof(data), file) != sizeof(data))
			printf("ERROR: Write file failed\n");
	}
	else
		printf("ERROR: Create file failed\n");

	// Close file
	fl_fclose(file);
}

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include "md5.h"

#define MUL_BYTES 1024
#define MUL_KB (MUL_BYTES*1024)
#define MUL_MB (MUL_KB*1024)

void Benchmark_MD5(void)
{
   unsigned __int64 iPerf;
   unsigned __int64 iBaseTime;
   double dbFreq;

   unsigned char bzBuffer[] = {0x0a, 0x55, 0x23};
   unsigned __int64 iValue;

   MD5_CTX md5;
   int iPasses = 5000;

   QueryPerformanceFrequency((LARGE_INTEGER *)&iPerf);
   dbFreq = 1.0 / (double)iPerf;
   QueryPerformanceCounter((LARGE_INTEGER *)&iBaseTime);

   for (int i = 0; i < iPasses; i++) {
      MD5Init(&md5, 0);
      MD5Update(&md5, bzBuffer, 3);
      MD5Final(&md5);
   }

   //16 is for the length of the MD5 Digest added by the passes we tested
   //then divided by the Seconds it took to run

   QueryPerformanceCounter((LARGE_INTEGER *)&iValue);
   double seconds = ((double)(iValue - iBaseTime) * dbFreq);
   double bps = (double)((double)(16 + iPasses) / seconds);


   printf("DEBUG: [Passes = %d] %5.3f Byte/s\n", iPasses, bps);

   printf("RESULT:\t");
   if (bps < MUL_BYTES)
      printf(" %5.2f Bytes/sec\n", bps);
   else    if (bps < MUL_KB)
      printf(" %5.2f KB/sec\n", bps / 1024);
   else    if (bps < MUL_MB)
      printf(" %5.2f MB/sec\n", bps / 1024 / 1024);
   else
      printf(" %5.2f GB/sec\n", bps / 1024 / 1024 / 1024);
}

void main(void)
{
   Benchmark_MD5();
}