How can we leave the fullscreen mode in Haskell OpenGL?

Question

In HOpenGL, I can enter fullscreen mode with the function fullScreen:

http://hackage.haskell.org/package/GLUT-2.1.1.2/docs/Graphics-UI-GLUT-Window.html#v%3AfullScreen

But, how can we leave the fullscreen mode? Is there a function to leave the fullscreen mode? I used the function fullScreenToogle but I get a runtime error:

user error (unknown GLUT call glutFullScreenToggle, check for freeglut)

Yes, I tried calling the function fullScreen again without success. — Juan Carlos Kuri Pinto, Oct 11 '13 at 17:29
OpenGL Synopsis: A binding for the OpenGL graphics system Default available version: 2.9.0.0 Installed versions: 2.2.3.1 — Juan Carlos Kuri Pinto, Oct 12 '13 at 18:05

score 2 · Answer 1 · edited May 23 '17 at 11:57

2

You will need to call setWindowSize :: Size -> IO () to exit full screen. This function internally calls glutReshapeWindow which leads to exit from full screen. See this answer.

edited May 23 '17 at 11:57

Community

1
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answered Oct 11 '13 at 08:05

Ankur

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Not in scope: `setWindowSize' I tried windowSize $= Size 640 480 without success: case key of ... Char 'F' -> fullScreen Char 'W' -> windowSize $= Size 640 480 _ -> return () – Juan Carlos Kuri Pinto Oct 11 '13 at 18:56

score 0 · Answer 2 · answered Oct 11 '13 at 19:01

My answer to Ankur:

Not in scope: `setWindowSize'

I tried windowSize $= Size 640 480 without success:

case key of
 ...
 Char 'F' ->
  fullScreen
 Char 'W' ->
  windowSize $= Size 640 480
 _ -> return ()

I added this piece of code to this example:

KeyboardAndMouse3DAnimation.hs

http://pastebin.com/W14KSeLj

How can we leave the fullscreen mode in Haskell OpenGL?

2 Answers2