Adding a System::String^ as key in VC++ Dictionary - dictionary

Question

I am completely new to C++, so I'm stuck on something which I'm sure is trivial.
I have a dictionary:
Dictionary<String^, Room^>^ roomList = gcnew Dictionary<String^, Room^>();
I'm trying to add a new Room to the dictionary:
Room r("Room 1", x, y);
roomList->Add(r.getName, %r);
Room is defined as follows:
ref class Room
{
private:
String^ mName;
double mX; //scaled X-coordinate of top left corner (meters)
double mY; //scaled Y-coordinate of top left corner (meters)
public:
Room(String^ name, double x, double y);
String ^ const getName() { return mName; }
double const getX() { return mX; }
double const getY() { return mY; }
};
When I try to compile the code I get the following error:
'Room::getName': non-standard syntax; use '&' to create a pointer to member"
What am I doing wrong? For some reason I can't use the object's name (a System::String^) as the key, but I'm not sure why.

Answer 1

roomList->Add(r.getName, %r);
You declared getName as a function, not a property. So it needs to be r.GetName(), note the added () parentheses. Declaring a Name property would be wise, it is the .NET way.
Room r("Room 1", x, y);
This declaration is technically wrong. You are using stack semantics, the r object will automatically be disposed when code execution leaves the scope block. You never want to add a disposed object to a collection. You'll get away with it in this case since you did not actually implement a destructor. Woe be you if you ever do. And woe the reader of your code. Just do it correctly:
Room^ r = gcnew Room("Room 1", x, y);
roomList->Add(r=>getName(), r);
Last but not least, this looks like a student assignment. You cannot get a passing grade for this code, it is not C++. The language you are using is called C++/CLI, it is an extension language that helps writing interop code for .NET programs.