Indeed, the sample from the website does not close correctly when the window is closed; you must press the escape key. This problem has nothing to do with GLFW or the Haskell wrapper, but with the demo, which does not check if the window gets closed. I modified the example code on the wiki so it also exits when the window is closed (the original author might want to check my hack, it's not really clean). Of course this is all rather horrible imperative code :) For nicer alternatives, look at Yampa (the Space Invaders game or the Frag 3D shooter), or Reactive (which I don't understand yet ;-) and other functional reactive programming approaches .

-----Original Message----- From: hjgtuyl@chello.nl [mailto:hjgtuyl@chello.nl] Sent: dinsdag 25 maart 2008 0:45 To: bf3@telenet.be Cc: haskell-cafe@haskell.org Subject: Re: [Haskell-cafe] Terminating GLUT/GLFW programs

Thanks for the info, but it doesn't solve my problem; I adjusted the path, reinstalled GLFW and recompiled the program, but it still does not terminate.

Henk-Jan

On Mon, 24 Mar 2008 08:58:05 +0100, Peter Verswyvelen wrote:

...

Hi,

I had a similar (unsolved) problem with GLUT but on my system (Windows XP + GHC 6.8.2) GLFW works fine, exiting is no problem at all.

But when building GLFW, make sure that the GHC gcc-lib directory comes *before* the MinGW/Cygwin directory in your PATH environment variable, since when linking, the LD.EXE bundled with GHC *must* be used.

Cheers, Peter

hjgtuyl@chello.nl wrote:

...

L.S.,

I am trying GLUT and GLFW (on Windows XP, with GHC 6.8.2); the

...

programs do not terminate when I close the window by clicking on the cross in the upper right corner of the window.

The sample program for GLUT is at

http://blog.mikael.johanssons.org/archive/2006/09/opengl-

sample programming-in-haskell-a-tutorial-part-1/

...

the GLFW program: http://haskell.org/haskellwiki/GLFW

I tried in the GLUT program: close = exitWith ExitSuccess

closeCallback $= Just close -- => User error (unknown GLUT call getCloseFunc, check for freeglut)

this needs freeglut (not documented); I downloaded freeglut.dll and placed it in the windows\system32 directory. The error message remained.

What is needed to let these programs terminate properly?

-- http://functor.bamikanarie.com http://Van.Tuyl.eu/ --

On Tue, Mar 25, 2008 at 7:37 PM, Paul L wrote:

Peter is right at saying it's the sample GLFW program that didn't handle Window Close event. I didn't double check his modification because I run Linux/X11 with xmonad where there is no CLOSE button for any window, but I trust his modification works fine :-)

Sure there is. The button is just on the keyboard (Ctrl-Shift-C) Luke

On 3/25/08, Luke Palmer wrote:

Er, not Ctrl, of course... Mod-Shift-C. /me goes to punish his hand for compusive "send" presses.

I believe that is to kill a window rather than a normal window close. -- Regards, Paul Liu Yale Haskell Group http://www.haskell.org/yale