title: Delphi get component from its tag
body: <p>Today I have a question that is simple to ask, but not so simple to answer: is there a way to get a component by its tag?</p>
  
  <p>I have a group of frames and in each of them the component I would like to focus is tagged as "1". The tagged component may be a TEdit, TMemo, TListBox, and so on.</p>
  
  <p>From a frame controller, I would like to focus the control tagged as "1" in each frame according to the frame itself. 
  Can I accomplish this task without knowing the component type or name?</p>