unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ActnList, StdCtrls, ExtCtrls; type TForm1 = class(TForm) Button1: TButton; Edit1: TEdit; procedure FormCreate(Sender: TObject); private procedure MyPro(Sender: TObject); { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.FormCreate(Sender: TObject); begin Button1.OnClick := MyPro; Edit1.OnClick := MyPro; end; procedure TForm1.MyPro(Sender: TObject); begin if Sender is TButton then ShowMessage((Sender as TButton).Caption); if Sender.InheritsFrom(TEdit) then ShowMessage((Sender as TEdit).Text); end; end.