app output to vga adapter

hi all, i hope one of you can direct me into the right direction.
i finished my little app and now i would like to add the possibility to run the app on the ipad and use the vga adapter to show the app. like screen mirror.
any idea how this works, and if it is possible at all?
appreciate any hints thanks.

 

thanks for replying. but can someone upload/post some sample code?
would be much appreciated. easier to learn from sample code.

 

yeah thanks, i knew that page already, and its nice but it doesnt work with mirroring or at least i dont know how