领悟旧事

   定义一个全局变量
   Graphics::TBitmap *bkMap;

   bkMap = new Graphics::TBitmap(); bkMap->Width = 19*6; bkMap->Height = 33;
  int iShowTimeX=10,iShowTimeY=10;
   bkMap->Resize(19*6,33);
   bkMap->Canvas->BeginScene();
   bkMap->Canvas->DrawBitmap(Image1->Bitmap,TRectF(iShowTimeX,iShowTimeY,iShowTimeX+6*19,iShowTimeY+33),
  TRectF(0,0,19*6,33),20);
   bkMap->Canvas->EndScene();

   最后要记得delete bkMap;