how to Update the boundingRect of a QGraphicsItemGroup

**zhy0808** · 30th September 2010, 19:46

i have a QGraphicsItemGroup with several items in it.But the QGraphicsItemGroup's boundingRect is not changed when i change the size of one member in the group. Is there any way to manually update the boundingRect of an existing item group?

**Lykurg** · 30th September 2010, 19:55

Do you use custom items in the group? If so, you probably do not update the bounding rect there.

EDIT: Ehm, a quick look into the sources puzzels me. It seems the group only recalc the rect when you add or remove an item.

**jonks** · 25th October 2010, 14:02

I had exactly the same problem.
Solved it using Lykurg's observation. - when I move an object, I check to see if it has a parent.
If it has a parent, I remove it from the parent, and then re-add it again.