[Interest] QGraphicsScene crashed after removeItem() and delete item

[Alex Malyushytskyy]

I am not using qt 5, but if I am not mistaken QGraphicsScene code was
migrated from QT4


On Sun, Sep 22, 2013 at 8:56 AM, 程梁 <devbean at outlook.com> wrote:

> Hi, there! I have a problem: when I called QGraphicsScene::removeItem()
> then delete the removed item, my application crashed. This happens on Qt5
> 64bits (I tested on openSUSE with 5.1.1 and gcc 4.7.2) but not on Qt4.
>
> This is my code:
>
> void GameController::snakeAteFood(Snake *snake, Food *food)
> {
>     scene.removeItem(food);
>     delete food;
>
>     addNewFood();
> }
>
> If I remove the line "delete food;" everything is OK. But it will crash
> with this line. The Food::boundingRect() will not change but
> Snake::boundingRect() does so I did add prepareGeometryChange() function
> before it changed. I've no idea why this still crashed. Please help me.
>
> Thank you!
>
> Cheng Liang
> Nanjing, China
> http://www.devbean.net
>
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