excel control by delphi

//Aboutmyselfexcelcontrol.....studydata//foryourinformation...unittoxls5butt;interfaceusesWindows,Messages,SysUtils,Variants,Classes,Graphics,Controls,Forms,Dialogs,StdCtrls,Excel2000,OleServer;typeTForm1=class(TForm)Button1:TButton;Button2:TButton;Button3:TButto