wenn die datei größer als 2gb ist gibt mir das programm einen

- wert

hier der source

void CextrrebDlg::OnBnClickedButton1()

{

 char filename[100],filename2[100],filename3[100],path[100],Temp3[300],Temp[200],lba[100];

  unsigned char Byte1[2048];

  FILE *file_ptr;
  FILE *LBATXT;
  FILE *output_ptr;

 long indx,z;
 unsigned long  DEB,LG;

  CWnd* pWnd = GetDlgItem(PATH);
  CWnd* pT1 = GetDlgItem(T1);
  CWnd* pT2 = GetDlgItem(T2);
  CWnd* pT3 = GetDlgItem(T3);
  CWnd* pLBA = GetDlgItem(LBA);

  pWnd->GetWindowText(path,100);
  pLBA->GetWindowText(lba,100);
  pT2->SetWindowText(_T("Extracting LBA, please Wait"));

  sprintf(filename,"%s%s",path,lba) ;
  sprintf(filename2,"%sWork\\worktbl.TXT",path) ;

 if((file_ptr=fopen(filename,"rb"))==NULL)
  {
    sprintf(Temp,"Level [2] - Error Opening %s", filename);
	MessageBox(Temp);
    exit(0);
  }

  if((LBATXT=fopen(filename2, "rt"))==NULL)
  {
    sprintf(Temp,"Level [2] - Error Opening %s", filename2);
	MessageBox(Temp);
    exit(0);
  }

int  StepIt();                      

      CProgressCtrl* pBar=(CProgressCtrl*)GetDlgItem(IDC_PROGRESS1); 
pBar->SetRange(0,435); 
pBar->SetPos(0);
pBar->SetStep(1);

 do

 {

   UpdateWindow();
   bool ReloadWindow();

   fgets(Temp, 200, LBATXT);
    for(indx=0;indx<200;indx++)
	{
      if(Temp[indx]=='\n') Temp[indx]='\0';
	};

    for(indx=0;indx<8;indx++)
	{
      ps2conv[indx]= Temp[indx];
	};
    DEB = hex2dec();

    sprintf(Temp3,"%d",DEB);
    pT3->SetWindowText(Temp3);

	for(indx=0;indx<8;indx++)
	{
      ps2conv[indx]= Temp[indx+9];
	};
    LG = hex2dec();

	z = strlen(Temp)-18;

	for(indx=0;indx<z;indx++)
	{
      filename3[indx] = Temp[indx+18];
	};
    filename3[indx]='\0';
	if (indx ==0) break;

	sprintf(Temp,"%sWork\\%s",path,filename3);
    pT2->SetWindowText(_T(filename3));
    UpdateWindow();
    if((output_ptr=fopen(Temp,"wb"))==NULL)
	{
       sprintf(Temp,"Level[3] - Error Opening [%s]", filename3);
	   MessageBox(Temp);
       exit(0);
	}

	fseek(file_ptr,DEB,SEEK_SET);

DEB = Start position

hab es schon mit unsigned long probiert
bekomme aber trotz dem einen - wert
wens über die 2gb geht

kann mir einer helfen ?

Danke