> I tried to run that file using following command
$> ./intro

> but I got following message

> Gtk-WARNING **: cannot open display: 

> I could not rectify this problem.
>Pls. could anyone tell me where is the problem!
>My OS is Red hat Linux 7.1 and kernel - 2.4.2-2
>Pls tell me what is required to solve this problem.

> Waiting for some guidelines from all experts

> sachin

Hello sachin

Are you running the program while being logged in as root? When you start X
(or Gnome / KDE etc.), the person you log in as "owns" the display. If you
try to start a program that needs X, while being logged in as another user
than the one that started X, you might get an error like this ...

regards, Søren T.