How to use UIGetScreenImage

Question

Hello,

I would like to be able to do a real time analysis of the image taken by the camera. I've seen that we are now allowed to use the undocumented UIGetScreenImage function. However, I do not succeed to use it, I have the following warning:

implicit declaration of function 'UIGetScreenImage'

any idea to solve this?

Thanks in advance!

regards,

Answer 1

You need to put a prototype

CGImageRef UIGetScreenImage(void);

in your source code (or some common headers).

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Note that you need to CGImageRelease the result of UIGetScreenImage even it is a "Get" function.

Answer 2

"I've seen that we are now allowed to use the undocumented UIGetScreenImage function." - Really? Care to give a reference?