can't open XDisplay

[PD Dr. Edward Wornar]

Hi,

are you trying to run the program from the cygwin shell, or from
an xterm within xfree86 (as you should)? 

Cheers

Edi

> 
> I am compiling  a linux XWindows application in win98 using cygwin/xfree86.
> But when I execute the program, opening XDisplay fails, due to the following
> code fragment
> 
>  dpy = XOpenDisplay(getenv("DISPLAY"));
>  if (dpy == 0)
>  {
>       fprintf(stderr,"Can't open X display\n");
>   exit(1);
> }
> 
> 
> what could be the problem???