On Fri, 24 Feb 2017 19:12:18 +0800 jack ma <assang...@gmail.com> wrote:
> Hi， > > is it correct to use “delete” directly delete the item ? > > or I should first call removeItem() and then call "delete item" to > remove it? > > How are these two ways affect the bsp tree? > > Thanks, > jack From the docs for ~QGraphicsItem(): > Destroys the QGraphicsItem and all its children. If this item is > currently associated with a scene, the item will be removed from the > scene before it is deleted. > Note: It is more efficient to remove the item from the QGraphicsScene > before destroying the item. So either method is safe, but explicitly removing it is better. -Francis _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
