osx - How can I capture the screen with Haskell on Mac OS X? -

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How can I capture the screen with Haskell on Mac OS X?

I've read but I'm working on Mac Mini, so Windows solutions are not implemented and GTK solutions do not work because it only captures a black screen. In Mac, GTK only captures black screen.

How can I capture with the screen ?? | And OpenGL?

Only with some luck. OpenGL is primarily a drawing API and the contents of the main framebuffer are not undefined until they are made ready by OpenGL. OpenGL could be abused as the graphics system manages the framebuffers of its on-screen window: after the window without predefined background color / brush, its initial framebuff content is just what the window creates on the screen. If a OpenGL event is created at the top of it, then framebuffer has its own off-screen framebuffer with a combination of OpenGL to make screenshots with every window correction and the content of the screen is composite at the end. If you use the method mentioned above, which is an initial memory that contains the requisite material on a compositing window system with a desired window, the result is wildly, between solid clear color, wildly distorted junk pieces, in data noise.

Since taking a screenshot, a lot of system should be taken into account in trustworthy manner, it is impossible to actually write portable screenshots program.

And OpenGL is definitely the wrong device, it does not matter that people (including this) were able to misuse this kind of past.

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