CODEWITHSUNDEEP
c++.netc++-cli
Angl0r
Angl0r

Reputation: 73

Error C2440 '=' : cannot convert from 'cli::array<Type> ^' to 'wchar_t'

I got a little problem with my C++/CLI progamm.

I got a few Char arrays wo work without problems.

Header1:

  ref class _CGuid{ 
        static const int CIDGR=37;  
        public: 
        array<Char>^  cGuid;
        array<Char>^ cUuid;

           }

Cpp1 -> contruktor:

 cGuid = gcnew array<Char>(CIDGR);

some function:

_CGuid::Type(String^ tmpname,String^  tmpid)
{


pcName=tmpname;
cUuid=tmpid->ToCharArray();


}

So this Works Perfectly fine for me without errors. How ever This doesn’t work:

Other Header:

ref class CStorage{
public:
array<String^>^ names;
array<Char>^ mac;

Other contruktor

names = gcnew array<String^>(100);
mac = gcnew array<Char>(100);

some function 2:

names[k]=tname;
mac[k]=tmac->ToCharArray(); <-------- Error Line
k++;

This line gets the error:

error C2440: '=' : cannot convert from cli::array<Type> ^ to wchar_t

  with
  [
       Type=wchar_t
  ]

There is no context in which this conversion is possible

So I really don´t know whats the problem here.

Upvotes: 0

Views: 1683

Answers (2)

alexbuisson
alexbuisson

Reputation: 8469

here you copy a CLI array coming from the "ToCharArray" in 1 wchar_t of the Mac array!

  mac[k]=tmac->ToCharArray(); <-------- Error Line

as you want an array of Mac Address you must allocate it with 

   mac = gcnew array<array<Char> >(100);

so now you can affect mac[k]

Upvotes: 0

Konrad Rudolph
Konrad Rudolph

Reputation: 545588

The error says it all, actually. ToCharArray returns an array<Char>, which you try to assign to a single Char (= wchar_t) when accessing mac[k].

Did you maybe mean to assign to mac instead?

mac = tmac->ToCharArray();

If so, then this line is redundant:

mac = gcnew array<Char>(100);

Here you allocate memory for mac which you later throw away when you re-assign mac.

Upvotes: 1

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