Closing About GtkAboutDialog

Forgive me if this has been asked before, I Googled the archives, and didn't find it. If it has, please accept my apologies, and just point me in the right direction. I just started playing around with PHP-GTK Glade based applications, and I've come up against a fairly simple, but so far escaping problem. Let's say I created a very simple Glade file with 2 dialogs. The main_dialog and the about_dialog. If I code up something to display the about_dialog when the users clicks the Help -> About: ... $this->glade->get_widget("about_dialog")->show(); ... And then the user uses the built in little "X" at the top right to close the about_dialog or hits ALT+F4 to close the about_dialog, everything is fine. However, if the user tries to re-open the about_dialog, they'll get an error like this: Fatal error: Call to a member function show() on a non-object in... Which makes sense, because the object has been destroyed, not hidden. If the user clicks my close button, which I have coded to do this: function on_about_close_button_clicked() { $this->glade->get_widget("about_dialog")->hide(); } ...then everything works, and the user can re-launch the about_dialog as needed. However, if they close the dialog with any other method than the Close button, the error will always happen. With using Glade + PHP-GTK, what is the best way around this? -Lup