QMap of QScopedPointer

Pavel Romankov

Hello
Can i create a QMap of QScopedPointer?
For example:

QMap<int, QScopedPointer<MyClass>> myClassObjects;

for (int i = 1; i <= 10; i++) {
   myClassObjects.insert(i, QScopedPointer<MyClass>(new MyClass()));
}

when i make so, i have compile error. What is the right way to do this?

SGaist

Hi,

No you can't. QScopePointer cannot be copied.

Why do you want such a map ?

Pavel Romankov

@SGaist
For example: i have modbus port and need modbus device. I use QScopedPointer fot it.

QScopedPointer<QModbusRtuSerialMaster> modbusDevice;

But now I want to use some ports, so I need N devises. I decided to store them in QMap, but as i see, it is wrong way)

mpergand

@Pavel-Romankov
Since it descends from QObject, no need to do more then that:

auto device=new QModbusRtuSerialMaster(this);

Pavel Romankov

@mpergand
it was example.
I use my own class, not descended from QObject, and store it in context which not QObject too.

mpergand

@Pavel-Romankov said in QMap of QScopedPointer:

I use my own class, not descended from QObject, and store it in context which not QObject too.

Why not ?

Anyway, to delete all the container you can use:
qDeleteAll(map.begin(), map.end());

Pavel Romankov

@mpergand
Hm, thank you for idea!)

ChrisW67

You could also use a copyable smart pointer like QSharedPointer if threading issues are considered.