Todd wrote:
...but there is no copy constructer that can create the underlying
myComponent from the nsCOMPtr<myIComponent>.....
Right. The nsCOMPtr doesn't have a myComponent; it has a myIComponent. There
could be several different implementations of myIComponent, in general.
In this case, you have several options:
1) Explicitly cast comptr.get() to myComponent* if you're sure it's
a myComponent.
2) Have a clone() method on myIComponent that clones it.
3) Use nsRefPtr<myComponent> instead of nsCOMPtr<myIComponent> in
your code.
There might be other ways too, of course.
In all cases, you MUST implement a copy constructor. Not having one (as you do
now) will mean that the refcount is copied too, which is just wrong.
-Boris
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