用几种方法建立位图文件,读入位图.平铺/居中/透明（以矩形参数指定）/透明（以点坐标指定）/透明并且居中/透明的平铺位图,保存位图.-Set up in several ways bitmap file, read into the bitmap. Tile/center/transparent [in rectangle parameter specifies]/transparent [to the designated point coordinates]/transparent and