How to see if a Delphi component already exists in your application?

Question

How does one test if a component exists in your current application for example if you create a dynamic radiogroup named radiogroup1 how do you check if there already is a component with the name radiogroup1?

Answer 1

type
    TFrameClass=class of  TFrame;

procedure TForm1.LoadFrame(CurrentFrame: TFrameClass; Name:String);
var 
Reference:TFrameClass;
Instance:TFrame;
begin
  Instance:=TFrame(FindComponent(Name));
  if  (Instance=nil)  then
  begin
      Reference:=TFrameClass(CurrentFrame);
      Instance:=Reference.Create(Self);
      Instance.Align := alClient;
      Instance.Parent := ClientPanel;
  end
  else
    begin
          Instance.BringToFront;
    end;
end;

procedure TForm1.scGPCharGlyphButton4Click(Sender: TObject);
var  FrameInternalDistribution:TFrameInternalDistribution;
begin
    LoadFrame(TFrameInternalDistribution, 'FrameInternalDistribution');
end;

procedure TForm1.scGPCharGlyphButton2Click(Sender: TObject);
var
  FrameInboxDistribution:TFrameInboxDistribution;
begin
  LoadFrame(TFrameInboxDistribution, 'FrameInboxDistribution');
end;