C++/Cli :calling a delegate from a native method

[h_schmieder]

Hello,

in my C++/Cli project I want to call a delegate from a native Method,

so I have this


//begin from native include

class Reconnecter {
public:
virtual std::string getSAMLResponse() = 0;
};

//end from native include

public delegate String^ SAMLConnectDelegate(String^ url);

class MyReconnecter : public Reconnecter {
public:
MyReconnecter(std::string& _hostname, int port, std::string& _consumer, std::string& _entityid, SAMLConnectDelegate^ _connectdelegate);
~MyReconnecter();

std::string getSAMLResponse();

private:
std::string hostname;
int port;
std::string consumer;
std::string entityid;
msclr::gcroot<SAMLConnectDelegate^> connectdelegate;
};


//Implementation

MyReconnecter::MyReconnecter(std::string& _hostname, int _port, std::string& _consumer, std::string& _entityid, SAMLConnectDelegate^ _connectdelegate)
: hostname(_hostname), port(_port), consumer(_consumer), entityid(_entityid), connectdelegate(_connectdelegate) {
}

MyReconnecter::~MyReconnecter() {
}

std::string MyReconnecter::getSAMLResponse() {
std::string result;

try {
if (connectdelegate != nullptr) {
ServerPool& sp = ServerPool::getInstance();
std::string url = std::move(sp.SAMLCreateAuthnRequest(hostname, port, consumer, entityid));
String^ murl = Helper::ConvertUTF8ToString(url);
String^ samlresponse = connectdelegate(murl);
Helper::ConvertStringToUTF8(result, samlresponse);
}

} catch (...) {
}

return result;;
}



But I get the following errors when compiling;


Error C2088 '!=': illegal for struct

Error C2064 term does not evaluate to a function taking 1 arguments


The first one points to

connectdelegate != nullptr

and the second to

String^ samlresponse = connectdelegate(murl);

If I change the condition to

connectdelegate != __nullptr

I get

Error C2678 binary '!=': no operator found which takes a left-hand operand of type 'gcroot<Jedox:alo::Comm::SAMLConnectDelegate ^>' (or there is no acceptable conversion)


Is there a way to get it working ?

tia

Hendrik Schmieder

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