Managed C++/CLI

int val;
String^ s = "10.22";
if (System::Int32::TryParse(s,val)) 
    // parsed as Int32.
else
    // try something else...

IntPtr YourClass::GetFuncPointer()
{
    FuncDelegate^ fp = gcnew MessageFuncDelegate(this, &Handler);
    pin_ptr<MessageFuncDelegate^> pinnedFunctionPointer = &fp;
    return ((ProcMessageFunc)pinnedFunctionPointer);
}

public ref class ClientRegistrar abstract sealed {
    static FuncDelegate^ s_ManagedReceiverList;
    
    // ...
    public static void RegisterClient(YourClient^ p_Client)
    {
        // thread safety for free
        s_ManagedReceiverList += 
            gcnew MessageFuncDelegate(p_Client, &YourClient::Handler);

        // here I assume that ::Receiver is an unmanaged global function which
        // takes a funtion pointer of type ProcMessageFunc. Don't know
        // if you need to deal with multiple registrations....
        ::Receiever((ProcMessageFunc)Marshal::GetFunctionPointerForDelegate(s_ManagedReceiver));
    }

    public static void UnregisterClient(YourClient^ p_Client)
    {
        s_ManagedReceiverList -=
            gcnew  MessageFuncDelegate(p_Client, &YourClient::Handler);
        // use the same schema to unregister from the native receiver
    }
}

YourClient tClient = new YourClient();
// ...
ClientRegistrar.RegisterClient(tClient);
// ...

Paramu1973 wrote:

While I want to get the MdiParent-Forms Instance, its giving the error

• why the identifier 'CFIS_Main' is not recognised.
• why you are using the variable 'MyInstFrm', when it has not been defined in the current compilation unit.
• why the call to 'MyProjectName::For_Student_Details::GetForm()' has the wrong number of arguments.