void HTML_QuickForm_Page::buildForm (
Builds a form. You should override this method when you subclass HTML_QuickForm_Page, it should contain all the necessary addElement(), applyFilter(), addRule() and possibly setDefaults() and setConstants() calls. The method will be called on demand, so please be sure to set $_formBuilt property to TRUE to assure that the method works only once.
throws no exceptions thrown
This function can not be called statically.