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

[Evaldo G. <ev...@ga...>]

Hi!
Traditionally, on *nix systems, Display Availability is defined by a
target and authentication. the default target display you can get from
variable DISPLAY. if its not set, you are probably out of a GUI
environment. Another issue is checking authentication, which I will not
cover here, but you can read the manpage for Xsecurity(7) :)
Cya
Evaldo Gardenali - UdontKnow

Em Dom, 2004-06-13 =E0s 23:25, Ashley Reed escreveu:
> Hi all,
>=20
> 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.
>=20
> Here's the error message.  It's not even an exception.
> FXRbApp::openDisplay: unable to open display :10
>=20
> If there is no display available, I want to switch to my text interface.
>=20
> Thanks,
> Ashley