title: How to change picture delphi timage in run time
body: <p>I use a timage in a form which load a background image.
  The problem is when i choose another picture in run time and change it by
      Img_Bk.Picture.LoadFromFile( SaveFileName ); 
  It doesnt work (Picture did n't change ). I mean it shows previous picture and doesn't show the new image during run time. Id like to change application background image during run time in my company by users which main form is a mdi form .
  I use delphi 7 .</p>
  
  <pre><code>    try
          Img_Bk.Picture := nil ;
          if FileSize &gt; 100 then
          begin
              Img_Bk.Picture.LoadFromFile( SaveFileName );
          end;
          Img_Bk.Stretch := True ;
      except
      end;
  </code></pre>