[Haskell] Using putStrLn/printf from DLL in GUI application

How many times you tried to use putStrLn from Haskell or printf from C when you are building DLL loaded in GUI application? This simply doesn't work because by default the GUI application doesn't have console window. The solution is to use allocConsole/freeConsole from the attached library. Example: do allocConsole ..... ..... putStrLn "Hello, world!" ..... ..... freeConsole This could be a good addition to the standard Win32 library if someone take care to integrate it. Cheers, Krasimir