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.NET Forum / .NET Framework / New Users / April 2006gcnew but NO gcdelete
I still have a bit of problem with this one since pointer management is such a critical task in C/C++ programming. I've read it, I understand it, but I gotta ask: There is no gcdelete function for objects created with gcnew. Simple set the handle to nullptr and the system will destroy it. Correct? If it is assigned to another object through a second gcnew call, the first object will also be detroyed (unless another reference has been made to it), correct? > Simple set the handle to nullptr and the system will > destroy it. Correct? At some point in the future, probably during an allocation, a GC will occur. If the memory being pointed to by the pointer is no longer referenced anywhere, then it will be reclaimed. Things are more complicated when there is a finalizer, of course. > If it is assigned to another object through a > second gcnew call, the first object will also be detroyed (unless > another reference has been made to it), correct? Nothing will be destroyed straight away in a deterministic fashion. If you need deterministic cleanup then use the new C++/CLI destructor semantics (i.e. C++/CLI destructors get renamed to Dispose(), and the class implements IDispose), and allocate the object on the "stack" as a local (it will really still be a heap-based object, but behind the scenes Dispose() will be called automatically). -- Barry Thanks for the reply. I don't need deterministic cleanup. It just feels strange to not delete. (I almost wish microsoft had a gcdelete entry with your explaination in their help system - simply because any C programmer new to Visual Studio will be looking for it). >>Simple set the handle to nullptr and the system will >>destroy it. Correct? [quoted text clipped - 16 lines] > > -- Barry
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