这段代码哪里错了？为何抓不到图

这段代码错哪了？为何抓不到图？
void   __fastcall   TForm1::Button2Click(TObject   *Sender)
{
    TRect       MyRect,   MyOther;

MyRect   =   Rect(10,10,100,100);

MyOther   =   Rect(10,111,100,   201);

    Graphics::TBitmap   *fullscreen=new   Graphics::TBitmap();
    Graphics::TBitmap   *cc=new   Graphics::TBitmap();
    HDC   dc=GetDC(0);//获取屏幕的DC   handle
    int   x=Screen-> Width;
    int   y=Screen-> Height;
    fullscreen-> Handle   =CreateCompatibleBitmap(dc,x,y);//抓屏
    BitBlt(fullscreen-> Canvas-> Handle,0,0,fullscreen-> Width,fullscreen-> Height,dc,0,0,SRCCOPY);//复制图像
    cc-> Canvas-> BrushCopy(MyRect,   fullscreen,   MyRect,   clNone);
    Form1-> Canvas-> CopyRect(MyOther,   cc-> Canvas,   MyRect);


    delete   fullscreen;
    delete   cc;
}

[解决办法]
没有定义cc大小:
Graphics::TBitmap *cc=new Graphics::TBitmap();
cc-> Width=MyRect.Width();
cc-> Height=MyRect.Height();

如果只是把屏幕放到Form1上的话下面这样比较简洁
TCanvas *C=new TCanvas;
C-> Handle=GetDC(0);
Form1-> Canvas-> CopyRect(Form1-> ClientRect,C,Form1-> ClientRect);
delete C;

[解决办法]
是不是要把整个屏幕抓下的图缩放到指定大小的位置内的？有个str...draw的api吧，记不得了