허걱
    Graphics::TBitmap *Bitmap;

    TRect   RectDest, RectSource;

    RectDest= Rect(10,10,100,100);
    RectSource= Rect(10,111,100, 201);

    Bitmap = new Graphics::TBitmap;
    Bitmap->LoadFromFile("C:\\factory.bmp");
    Form1->Canvas->CopyRect(RectDest, Bitmap->Canvas, RectSource);
    delete Bitmap;

Bitmap을 산산히 쪼개서 사용할 수가 있네용.. 캬캬 (__)