[Fxruby-users] How can I tell if there is no display available?

[Ashley R. <Ash...@co...>]

Hi all,

I'm writing an application using Ruby that has both a text interface and
a GUI (using FXRuby).  Can anyone tell me how to know at runtime if
there is no display to use.  It seems that when I call FXApp.new(),
control never returns to my code.  An error message is printed to the
console, and the program exits.

Here's the error message.  It's not even an exception.
FXRbApp::openDisplay: unable to open display :10

If there is no display available, I want to switch to my text interface.

Thanks,
Ashley