你的  DELPHI存取JPEG文件到SQL Server数据库 文中showbotton中代码中的var
ghy:TADOBlobstream;
pic:tjpegimage;
begin
ghy:=TADOBlobstream.Create(ADOTable1,pic, bmRead);
try
  ghy.Seek(JpegStartsInBlob(Adoquery1pic),soFromBeginning);
  Pic:=TJpegImage.Create;
  try
   Pic.LoadFromStream(ghy);
   Image1.Picture.Graphic:=Pic;
  finally
   Pic.Free;
  end;
finally
ghy.Free
end;
中的Adoquery1pic是怎么回事,是怎么来的?该加什么或是设什么????