in reply to Re^2: how to detect gtk installed of not
in thread how to detect gtk installed or not
This means that however you tried to install wxPerl, it was a broken attempt. If the wxPerl module were installed properly, or missing completely, require should either work or fail, but not pop up a "SO missing" message.
But maybe you can be a bit more explicit about how things fail for you, by posting a short, self-contained snippet together with the error messages. That would likely help us to help you better.