# To subscribers of the xforms list from Steve Lamont <spl@ncmir.ucsd.edu> :
> With RedHat 6.1, I get the following error when trying to start up a xforms
> application. And idea why? Thanks in adavnce?
>
> [hatchpqa@portpqa bin]$ ./um &
> [1] 20063
> [hatchpqa@portpqa bin]$ ./um: Can't open display
> Missing or failed fl_initialize()
Two possibilities come to mind -- both of them pretty basic.
First, you didn't call fl_initialize().
Second, your `DISPLAY' environment variable isn't set or is set
incorrectly.
Do the demos run? Does `fdesign'? If so, then the second possibility
is unlikely, so you should check your code to determine whether
fl_initialize() is being called before any other XForms (or X)
function call.
If the demos and `fdesign' don't run either, then it's probably your
DISPLAY variable that's botched. Type
echo $DISPLAY
If you either get an error message or the wrong host, then that needs
to be fixed in the standard manner.
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[sorry -- those silly things posted to an open mailing list make my
toes curl -- spl]
spl
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