bool QVariant::value(void *p, int typeid) would be nice to have

There is an operation to copy an arbitrary QMetaType-registered object into a QVariant using its meta-type id and its void* address:

QVariant::QVariant(int typeId, const void *copy)

I could not find, how to do the opposite operation. I expected something like the following to exist:

QVariant::value(void *ptr, int typeId)

which would copy the object stored in QVariant into another object of the same meta-type allocated at address ptr.

There are more details in my post: http://qt-project.org/forums/viewthread/35801