Set caret position in RichEdit
Use standard properties of the RichEdit component. SelStart is a new position of the caret. SelLength is the number of characters that are selected. This parameter should be 0, if we want to work with caret only.
procedure TForm1.Button1Click(Sender: TObject); begin with RichEdit1 do begin SetFocus; SelStart:=30; SelLength:=0; end; end;