Good morning!

I solved yesterday's problem today.

Yesterday's problem is I can hide the 4 buttons but 4 buttons not.

I declared the UIButton object above the @Interface in file(RootViewController:UIViewController).

I declared it below the @Interface in file until yesterday.

I could use those objects in other class(PaintingViewController:UIViewController).

I think most of the "YubiFude" application was completed.

I'll study new feature of iPhoneOS3.0 until WWDC2009 started.

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