c - How to write interactive wallpaper for Mac OS X Lion -

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i need write interactive live wallpaper mac os x lion on c/c++. type of application (target in terms of xcode) must be? plugin? cocoa application? etc? please me tutorials, maybe working source code.

this little tricky can done. have use 2 windows this. create 1 spans whole screen , has level of kcgdesktopwindowlevel. window layered above standard desktop picture below desktop icons. in there can render custom desktop available drawing technologies.

the user can not interact window though because finder layers actual desktop (icons , on) above level , catches events don’t reach background window.

so have create window each interactive region layered below kcgnormalwindowlevel. have experiment exact value.


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