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109

answers:

2

I ported a little Haskell program I wrote from Mac to Windows. It's a GUI application (wxHaskell, compiled with ghc 6.12.1), so it does not need the command prompt window to open. It does so, anyway, so my question: What must I do so that the program starts without opening a prompt window first? Is there some ghc switch for this?

+2  A: 

I don't have access to GHC on Windows, but it looks like you need to tell linker to use "windows" subsystem. ghc -optl-mwindows ... may work.

rkhayrov
+2  A: 

When using wxWidgets with cygwin, you can avoid having a console window appear by passing the -mwindows flag to the linker. You can tell GHC to pass flags to the linker using the -optl prefix, so you could try building with -optl-mwindows and see if that works.

I've done that before when building a Haskell SDL application on Windows, and it worked for me. I think the -mwindows flag is cygwin-specific though, and I'm not sure what your install of GHC might be using as a linker.

camccann
Thanks! That worked!
martingw
Also, make an installer using [bamse](http://hackage.haskell.org/package/bamse).
TomMD