Return map<cstring,> from com atl????

[Romiks]

Hi all, I've created simple ATLproject from VS2008 and added a simple object. The object should return the map<> collection through interface method. How can I do this? Maybe I should use SAFEARRAY? :^) If it is possible please point me to the article about using this.

[Stephen Hewitt]

This question shows you don't understand COM properly: you can't return a std::map from a COM interface method.

Steve

[Stuart Dootson]

To expand (slightly) on what Stephen's said - you can't return a std::map from a COM object. Instead, you would probably return an IEnumXXXX interface that allowed the user of your object to iterate over the map contents (see this article[^] for more details). However, I would suggest you get comfortable with COM & ATL first before trying a more advanced topic like this

[Romiks]

Thanks for help, I found the following article on MSDN about collections http://msdn.microsoft.com/en-us/library/3stwxh95(VS.71).aspx and tried. All works fine.

[tom groezer]

How about returning the value as one of the out parameter...