Convert const QObject* to QObject*

Question

I am quite new to Qt. Let MyClass be a sub-class of QObject.

Is there a way to convert properly a const MyClass * object to a MyClass * object?

I wanted to create a constructor MyClass(const MyClass *object); but it doesn't seem to be recommended.

Why can't you create the constructor? (BTW the constructor syntax doesn't have a return type). — juanchopanza, Feb 27 '13 at 16:22
I read somewhere that the QOject class does not support copies. — Maxbester, Feb 27 '13 at 16:27
I see. But how is that related to your `const QObject*` to `QObject*` conversion question? — juanchopanza, Feb 27 '13 at 16:29
I have no idea :) So you think this is the best way to proceed? — Maxbester, Feb 27 '13 at 16:33
What is MyClass(const MyClass*) supposed to do? If the argument is a parent, that won't work. And first passing a const object and the casting away the const-ness seems daft. — Frank Osterfeld, Feb 27 '13 at 21:26
Are you trying to make a copy constructor? That syntax is MyClass(const MyClass& object) — cppguy, Feb 27 '13 at 22:13
I found another thread [dealing with copy constructor](http://stackoverflow.com/a/2652584/902025). It seems to be impossible when inheriting QObject... — Maxbester, Mar 25 '13 at 15:21

score 0 · Accepted Answer · answered Feb 27 '13 at 16:17

0

Use the following code :

 MyClass *objRef = const_cast<MyClass *>(obj);

answered Feb 27 '13 at 16:17

Adnan Akbar

5

Please don't, unless you're 100% sure that ˋobjˋ will never be an actual ˋconstˋ object. – Luc Touraille Feb 27 '13 at 16:31

1 Answers1