Qt-interest Archive, April 2007
QGraphicsScene removing graphicsitems from scene
Message 1 in thread
Hi,
Iam having difficulties removing all my QGraphicsItem objects from
the scene,
I tried scene->removeItem(node->item); which complains about the scene
and items scene not beeing the same scene. Alright then i tried this
after some help from #qt@freenode
while(scene->items().first()){
delete scene->items(); or i also tried
qDeleteAll(scene->items());
}
this gives me segfault.
some clarification i want when a user has finished a simulation to clear
the scene for all items.
my items are contained in a class node which has QGraphicsItem* members
item etc.
Can anyone help me give me som feedback on a easy way to remove the
items from scene.
thanks in advance.
--
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Message 2 in thread
Hello,
portedcanvas example from Qt4.2 have the following code for clear scene:
QList<QGraphicsItem *> list = scene()->items();
QList<QGraphicsItem *>::Iterator it = list.begin();
for (; it != list.end(); ++it) {
if ( *it )
delete *it;
}
suleiman wrote:
> Hi,
>
> Iam having difficulties removing all my QGraphicsItem objects from
> the scene,
>
> I tried scene->removeItem(node->item); which complains about the scene
> and items scene not beeing the same scene. Alright then i tried this
> after some help from #qt@freenode
>
> while(scene->items().first()){
> delete scene->items(); or i also tried
>
> qDeleteAll(scene->items());
> }
>
> this gives me segfault.
>
> some clarification i want when a user has finished a simulation to
> clear the scene for all items.
> my items are contained in a class node which has QGraphicsItem*
> members item etc.
>
> Can anyone help me give me som feedback on a easy way to remove the
> items from scene.
>
>
> thanks in advance.
>
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