How to cast QPointer<T> to QPointer<childT>

[cafu]

Hi there,

i have a small problem while casting from QPointer<T> to QPointer<ChildT>

I tried this.

QPointer<T> tObject=new T();
//QPointer<ChildT> childtObject=(QPointer<T>)tObjec;// this does not work;
QPointer<ChildT> childtObject=(ChildT*)(T*)tObjec;// this work;

[high_flyer]

try qobject_cast<T>

[cafu]

do you mean qobject_cast<childT> thanks for the fast answer

[Lykurg]

Since QPointer is a "normal" pointer at all you also could use

QPointer<T> tObject = new T();
QPointer<ChildT> childtObject = (ChildT*) tObjec.data();

QPointer<T> tObject = new T();
QPointer<ChildT> childtObject = (ChildT*) tObjec.data();

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[cafu]

to cast to the parentclass pointer and then to child class pointer is correct:


QPointer<T> tObject=new T();
QPointer<ChildT> childtObject=(ChildT*)(T*)tObjec;