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Passing managed callback class to unmanaged code

I have an unmanaged library that can accept an instance of an abstract
class and call back into it. I'm writing a wrapper for this library.

How do I wrap a managed callback in a class derived from the unmanaged
class to pass to the library?

I tried creating a managed class that carries an unmanaged callback class
which calls back into the managed class, but I can't put a handle to the
unmanaged class in the unmanaged class. (I get C3265.) So how does the
unmanaged wrapper carry something to let it call up into the managed code?
Jul 12 '08 #1
1 4387
As usual, no sooner do I frame the question than I find the answer. In this
case, it's the gcroot template class.

A HOWTO article:


Jul 12 '08 #2

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