Re: [wxhaskell-users] Testing to see if a display is available

[Lennart K. <kol...@dt...>]

Arjan van IJzendoorn wrote:

> Hello Mads,
>
>> This leads me to the following question: How does one test if a  display
>> is available using WxHaskell?
>
>
> I don't know, but you might check the wxWidgets documentation first  
> to see whether this framework supports it. If not, there is no chance  
> of finding a wxHaskell method that does it. I couldn't find one after  
> quickly scanning the available classes.
>
> Alternatively, is there maybe an environment variable that tells you  
> whether a display is available?

Usually the environment variable DISPLAY is set if a display is 
available. This is of course no guaranty that the display can actually 
be opened.

Cheers,
  Lennart

>
> Cheers, Arjan