C++ Builder Font Styles Formatting

http://www.functionx.com/bcb/howto/fontstyles.htm

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

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
    for(int i = 0; i < Screen->Fonts->Count; i++)
        cboFont->Items->Add(Screen->Fonts->Strings[i]);
}
//---------------------------------------------------------------------------

void __fastcall TForm1::cboFontChange(TObject *Sender)
{
    lblPreview->Font->Name = cboFont->Items->Strings[cboFont->ItemIndex];
}
//---------------------------------------------------------------------------
void __fastcall TForm1::cboFontSizeChange(TObject *Sender)
{
    lblPreview->Font->Size = StrToInt(cboFontSize->Text);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::cboColorChange(TObject *Sender)
{
    lblPreview->Font->Color = cboColor->Selected;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::chkBoldClick(TObject *Sender)
{
    if( chkBold->Checked )
        lblPreview->Font->Style = lblPreview->Font->Style << fsBold;
    else
        lblPreview->Font->Style = lblPreview->Font->Style >> fsBold;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::chkItalicClick(TObject *Sender)
{
    if( chkItalic->Checked )
        lblPreview->Font->Style = lblPreview->Font->Style << fsItalic;
    else                                                    
        lblPreview->Font->Style = lblPreview->Font->Style >> fsItalic;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::chkUnderlineClick(TObject *Sender)
{
    if( chkUnderline->Checked )
        lblPreview->Font->Style = lblPreview->Font->Style << fsUnderline;
    else
        lblPreview->Font->Style = lblPreview->Font->Style >> fsUnderline;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::chkStrikeoutClick(TObject *Sender)
{
    if( chkStrikeout->Checked )
        lblPreview->Font->Style = lblPreview->Font->Style << fsStrikeOut;
    else
        lblPreview->Font->Style = lblPreview->Font->Style >> fsStrikeOut;
}
//---------------------------------------------------------------------------