procedure TForm1.Button1Click(Sender: TObject); 
begin 
  WebBrowser1.Navigate('http://www.SwissDelphiCenter.com'); 
end; 

// Print without Printer Dialog 

procedure TForm1.Button2Click(Sender: TObject); 
var 
  vaIn, vaOut: OleVariant; 
begin 
  WebBrowser1.ControlInterface.ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_DONTPROMPTUSER, 
    vaIn, vaOut); 
end; 

// Print with Printer Dialog 

procedure TForm1.Button3Click(Sender: TObject); 
var 
  vaIn, vaOut: OleVariant; 
begin 
  WebBrowser1.ControlInterface.ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_PROMPTUSER, 
    vaIn, vaOut); 
end; 

// Print Preview 

procedure TForm1.Button4Click(Sender: TObject); 
var 
  vaIn, vaOut: OleVariant; 
begin 
  WebBrowser1.ControlInterface.ExecWB(OLECMDID_PRINTPREVIEW, 
    OLECMDEXECOPT_DONTPROMPTUSER, vaIn, vaOut); 
end; 

// Page Setup Dialog 

procedure TForm1.Button5Click(Sender: TObject); 
var 
  vaIn, vaOut: OleVariant; 
begin 
  WebBrowser1.ControlInterface.ExecWB(OLECMDID_PAGESETUP, OLECMDEXECOPT_PROMPTUSER, 
    vaIn, vaOut); 
end; 

// as of Internet Explorer 4