Работа с заргужаемым текстом в RichEdit

//---------------------------------------------------------------------------
 
#include <vcl.h>
#pragma hdrstop
 
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
#include <stdio.h>
TForm1 *Form1;
AnsiString REtext = "";
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void log(AnsiString text)
{char *txt = text.c_str();
FILE * fo = fopen("log.txt","a+");
fprintf(fo,"\n");
fprintf(fo,txt);
fclose(fo);
}
 
void __fastcall TForm1::OpenClick(TObject *Sender)
{
    if (SaveDialog1->Execute())
    RichEdit1->Lines->LoadFromFile(SaveDialog1->FileName);
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
    if (OpenDialog1->Execute())
    RichEdit1->Lines->LoadFromFile(OpenDialog1->FileName);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::SaveClick(TObject *Sender)
{
    if (SaveDialog1->Execute())
    RichEdit1->Lines->SaveToFile(SaveDialog1->FileName);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{
    if (SaveDialog1->Execute())
    RichEdit1->Lines->SaveToFile(SaveDialog1->FileName);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn3Click(TObject *Sender)
{
//log(RichEdit1->Text);
REtext = RichEdit1->Text;
log(RichEdit1->Text);
}
 
//---------------------------------------------------------------------------
void __fastcall TForm1::ClearClick(TObject *Sender)
{
RichEdit1->Clear();
}
//---------------------------------------------------------------------------