unit Unit1;interfaceuses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls;type TForm1 = class(TForm) Image1: TImage; Button1: TButton; OpenDialog1: TOpenDialog; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end;var Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);begin if OpenDialog1.Execute then begin Image1.Picture.LoadFromFile(OpenDialog1.FileName); Image1.Stretch:=true; Image1.Left:=form1.Width div 2-image1.Width div 2; Image1.top:=form1.Height div 2-image1.Height div 2; endend;end.