Well, bind-ing/Connect-ing worked , the callbacks are called

sub Wx::Event::EVT_WIZARD_BEFORE_PAGE_CHANGED ($$$) { $_[0]->Connect( 
+$_[1], -1, 10235, $_[2] ); }
sub Wx::Event::EVT_WIZARD_FINISHED ($$$) { $_[0]->Connect( $_[1], -1, 
+10237, $_[2] ); }
sub Wx::Event::EVT_WIZARD_PAGE_SHOWN ($$$) { $_[0]->Connect( $_[1], -1
+, 10239, $_[2] ); }
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