FPCEF Prevent page from closing webbrowser

[Luciano Andress Martini]

I am dealing with a very specific issue with the browser. some parts of the site (that i will use) just open a printer dialog tab and close after. That is normal for a nominal browser. But because i am openning new tabs in the same page or window(and that is necessary for my case), the browser just close when the user try to print.

So how can i ignore the request of the page to close the browser on fpcef?

I tried a  onclose event on the object with a code that can prevent browser for closing. It works but after printing the tchromium object freezes, i think because this code in the page is unloading something before the close action of the tchromium, and i don't know where.