전 잘 되네요 -_-;;
복사해서 조금 수정해서 해봤어요

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

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------
int nBt = 0;
TButton *bt[1][100];
void __fastcall TForm1::Button1Click(TObject *Sender)
{
String aStr;
TComponent *cmpt;
int i, nGb=0, nBt=0;

    {
        {
        bt[0][nBt] = new TButton(this);
        bt[0][nBt]->Parent = Form1;
        bt[0][nBt]->OnClick = ButtonControl;
        aStr.sprintf("%03d", nBt);
        bt[0][nBt]->Name = "bt"+aStr;
        nBt++;
        }
    }
}
//---------------------------------------------------------------------------
void __fastcall TForm1::ButtonControl(TObject *Sender)
{
TButton *bt;
String aCmp;
TComponent *cmpt;

aCmp = dynamic_cast<TButton *>(Sender)->Name;
cmpt = (TButton *)FindComponent(aCmp);

//bt = (TButton *)Sender;
if(cmpt != NULL)
    {
    ShowMessage(2);
    bt = (TButton *)cmpt;
    }
    else
    {
    ShowMessage(1);
    }
}