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pFile.h

#include <Vcl.Forms.hpp>

#include <Vcl.ExtCtrls.hpp>

#include <Vcl.FileCtrl.hpp>

//---------------------------------------------------------------------------

class TForm1 : public TForm

{

__published: // IDE-managed Components

TTimer *Timer1;

TLabel *Label1;

TFileListBox *FileListBox1;

TDirectoryListBox *DirectoryListBox1;

TDriveComboBox *DriveComboBox1;

TMemo *Memo1;

void __fastcall Timer1Timer(TObject *Sender);

void __fastcall FormCreate(TObject *Sender);

void __fastcall FileListBox1Change(TObject *Sender);

private: // User declarations

void __fastcall init_Components();

void __fastcall Run();

public: // User declarations

DWORD size_Bytes;

HANDLE ident;

char buff[1024+1024+1024+1024];

__fastcall TForm1(TComponent* Owner);

};

//---------------------------------------------------------------------------

extern PACKAGE TForm1 *Form1;

//---------------------------------------------------------------------------

#endif

pFile.cpp

#include <vcl.h>

#pragma hdrstop

#include "pFile.h"

//---------------------------------------------------------------------------

#pragma package(smart_init)

#pragma resource "*.dfm"

TForm1 *Form1;

SECURITY_ATTRIBUTES s_a;

//---------------------------------------------------------------------------

__fastcall TForm1::TForm1(TComponent* Owner)

: TForm(Owner)

{

  s_a={sizeof(SECURITY_ATTRIBUTES),NULL,TRUE};

}

//---------------------------------------------------------------------------

void __fastcall TForm1::Run()

{

int i;

char c='.';

memset(buff,0,sizeof(buff)-1);

ident=CreateFile(FileListBox1->FileName.c_str(),GENERIC_READ, FILE_SHARE_READ,

&s_a,OPEN_EXISTING,0,NULL);

if(ident!=INVALID_HANDLE_VALUE)

ReadFile(ident,&buff,sizeof(buff),&size_Bytes,NULL);

for(i=0;i<sizeof(buff)-1;i++)

if(buff[i]==NULL)

  buff[i]=c;

Memo1->Text=buff;

CloseHandle(ident);

}

void __fastcall TForm1::init_Components()

{

DirectoryListBox1->FileList=FileListBox1;

DriveComboBox1->DirList=DirectoryListBox1;

}

void __fastcall TForm1::Timer1Timer(TObject *Sender)

{

 UnicodeString t,d;

 t=TimeToStr(Time());

 d=DateToStr(Date());

 Label1->Caption=t+"  "+d;

}

//---------------------------------------------------------------------------

void __fastcall TForm1::FormCreate(TObject *Sender)

{

 init_Components();

}