Because I get a CCArray with the method getChildren() from the class CCNode.
So I wrote the following:
for(int i = 0; i < myNode->getChildren()->count(); i++)
CCNode *child = myNode->getChildren()->objectAtIndex(i);
//some more code hereafter...
I don’t know yet if it works but it should be ok… (very simple code ; easier than Iterators used on CCMutableArrays)
If somebody has some other kind of code, let me know !