Создание линий между Image

//---------------------------------------------------------------------------
 
#include <vcl.h>
#include <iostream.h>
#include <stdlib.h>
#include <stdio.h>
#pragma hdrstop
 
#include <jpeg.hpp>
#include <graphics.hpp>
 
#include "Unit1.h"
#include "Unit2.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
 
    int cnt=0;
    TImage *img, *lin;
    TComponentList *img_list=new TComponentList;
    int mx, my ;
 
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
    img_list->OwnsObjects = true;
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::CreateImage ()
{
    img=new TImage(this);
    img->Name="Image"+IntToStr(cnt++);
    img->OnMouseDown=Image1MouseDown;
    img->OnMouseMove=Image1MouseMove;
    img->OnDblClick=Image1DblClick;
    img->Height=64;
    img->Width=64;
    img->Top=100;
    img->Left=100;
    ImageList1->GetBitmap(0,img->Picture->Bitmap);
    img->Parent=Form1;
    img_list->Add(img);
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::Button1Click(TObject *Sender)
{
    CreateImage();
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::Image1MouseDown (TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y)
{
    mx=X; my=Y;
}
//---------------------------------------------------------------------------
 
void __fastcall TForm1::Image1MouseMove (TObject *Sender, TShiftState Shift, int X, int Y)
{
    for (int i=0; i<img_list->Count; i++) {
        if (((TImage*)img_list->Items[i])->Name==((TImage*)Sender)->Name) {
            if (Shift.Contains(ssLeft)) {
                ((TImage*)img_list->Items[i])->Top+=Y-my;
                ((TImage*)img_list->Items[i])->Left+=X-mx;
            }
        }
    }
}
//---------------------------------------------------------------------------