Hi: It took me a while to find out why my iframe was not displaying properly. I have a parent/container page like
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> <html xmlns="http://www.w3.org/1999/xhtml"; xmlns:wicket="http://wicket.apache.org/";> ... <wicket:child>iframe child</wicket:child> and the child page is like <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";> <html xmlns="http://www.w3.org/1999/xhtml"; xmlns:wicket="http://wicket.apache.org/";> ... <wicket:extend>.... The final rendering the html page would contain <?xml.> declaration , which results in improper display in browser. Once I remove the <?xml.. line from the child html file, the final rendering of html does not show <?xml line, i.e. the first line is <!DOCTYPE..., and this somehow make the browser happy and display the page correctly. My understanding is that for child page, wicket would discard anything outside <wicket:extend>, but apparently, the presence of <?xml as the first line in child html somehow forced the parser to add the <?xml to the final html output as the first line, which also surprises as I thought wicket would stream out content as it goes instead of waiting to parse the entire tree. Thanks
