是否可抓下來後轉成TMemoryStream
  HWND hWnd;
  IDirect3D9 *g_D3D;
  IDirect3DDevice9 *g_pD3DDevice;
  IDirect3DSurface9 *surf;
  IDirect3DVertexBuffer9 *pD3DBuf;
  D3DPRESENT_PARAMETERS d3dpp;
  D3DDISPLAYMODE *pMode;
  LPDIRECT3DSURFACE9 pd3dsFront = NULL;
  TRect rect;
  short ret;
  if((g_D3D=Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
    Edit1->Text = "Direct Create Error....!";
  else
    Edit1->Text = "Direct Create OK....!";
  g_D3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT,pMode);
  ZeroMemory(&d3dpp,sizeof(D3DPRESENT_PARAMETERS));
  d3dpp.Windowed = true;
  d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
  d3dpp.BackBufferFormat = pMode->Format;
  hWnd=GetDesktopWindow();
  hWnd = Form1->Handle;
  if(g_D3D->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,hWnd,D3DCREATE_SOFTWARE_VERTEXPROCESSING,&d3dpp,&g_pD3DDevice))
    Edit2->Text = "Create Device Error....!";
  else
    Edit2->Text = "Create Device OK....!";
  g_pD3DDevice->GetDisplayMode(0,pMode);
  g_pD3DDevice->CreateOffscreenPlainSurface(pMode->Width,
                pMode->Height,
                D3DFMT_A8R8G8B8,
                D3DPOOL_SYSTEMMEM,
                &pd3dsFront, NULL);
  if( SUCCEEDED( g_pD3DDevice->GetFrontBufferData(0,pd3dsFront) ) )
     ret = D3DXSaveSurfaceToFile("test.bmp", D3DXIFF_BMP, pd3dsFront, NULL, NULL);
  Edit3->Text = ret;