title: Is it possible to access a TButton using tag?
body: <p>I hope to access a TButton using tag.
  IS it possible?</p>
  
  <p>for example, I hope set the caption of a TButton (button1 has tag 3) as 'aaa',
  I know I can use</p>
  
  <blockquote>
    <p>button1.caption:='aaa';</p>
  </blockquote>
  
  <p>but I hope to use tag '3' to access the tbutton and set the string value 'aaa'.</p>
  
  <p>Welcome any comment</p>
  
  <p>Thanks</p>
  
  <p>interdev</p>