I'm developing a CustomItem but I have a problem if the Item is bigger than screen. When I traverse it, I put the new position of the item in out array, and return true. The item is repainted but the scroll bar of the form doen't move and the background is not repainted. If I call invalidate method the item works better, but the scroll bar is retarded a click and there are a lot of paranormal effects.
Can you help me, please?
Thank you and sorry for my English.