title: Delphi-FireMonkey-Undeclared Identifier 'TEdit' ;Undeclared Identifier 'TLabel';
body: <p>I'm working on a practice Application in Firemonkey-RAD Studio XE3-Delphi.
  When implementing code I get the following errors:</p>
  
  <p>Undeclared Identifier 'TEdit'
  Undeclared Identifier 'TLabel'
  'TLabel' does not contain a member named 'caption' at line 35</p>
  
  <p>I included the code form the project in the following body.</p>
  
  <p>Any help is appreciated. Go easy on me..I'm new to Delphi.</p>
  
  <pre><code> unit strcode1u1;
  
      interface
  
      uses
        Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
        Vcl.Controls, Vcl.Forms, Vcl.Dialogs;
  
      type
        Tstrcode1f1 = class(TForm)
          ePlainText: TEdit;
          laEncrypted: TLabel;
          procedure ePlainTextChange(Sender: TObject);
          procedure FormCreate(Sender: TObject);
        private
          { Private declarations }
        public
          { Public declarations }
        end;
  
      var
        strcode1f1: Tstrcode1f1;
  
      implementation
  
      {$R *.dfm}
  
      procedure Tstrcode1f1.ePlainTextChange(Sender: TObject);
      begin
  
      end;
  
      procedure Tstrcode1f1.FormCreate(Sender: TObject);
      begin
      laEncrypted.caption:=
          chr(72)+chr(101)+chr(108)+
          chr(108)+chr(111)+chr(32)+
          chr(87)+chr(111)+chr(114)+
          chr(108)+chr(100);
      end;
      end.
  </code></pre>