Question with using class WebBroweComponent

Help ~
I want to load a web.
Chose a tab to show a web use class WebBrowerComponent
Without any intialization,just write as below

tab5::tab5 ()
{
setSize (1000, 700);
//[Constructor] You can add your own custom stuff here…
goToURL(“http://www.google.com”);
//[/Constructor]
}

anyway .no respond no reaction.