call_funcs.cxx

这是经典的CORBA程序

//-----------------------------------------------------------------------------
// Copyright (c) 2003-2020 EBUPT INFO CO.,LTD
//-----------------------------------------------------------------------------


//
// Client-side calling functions that invoke operations on the server.
//

#include <omg/orb.hh>
#include "call_funcs.h"
#include "it_print_funcs.h"
#include "it_random_funcs.h"

#include <it_cal/iostream.h>
IT_USING_NAMESPACE_STD

// Declare the global ORB defined in the client main file.
//
extern CORBA::ORB_var
global_orb;



// call_Hello_getGreeting -- client function that illustrates how to invoke IDL 
// operation Hello::getGreeting.
//
void
call_Hello_getGreeting(
    Hello_ptr IT_obj
)
{
    // Variables to be used as parameters to the call
    //
    CORBA::String_var               _result;

    cout << "call_Hello_getGreeting(): invoking operation" << endl;

    //--------
    // Make the call and handle any exceptions that are thrown
    //--------
    try {
        _result = IT_obj->getGreeting();
    }
    catch(const CORBA::SystemException &ex) {
        cout << "call_Hello_getGreeting(): call failed." << endl
             << ex << endl;
        //--------
        // No memory management issues to take care of
        //--------
        return;
    }

    // Diagnostics: print the values of "out" and "inout" parameters,
    // and return value, if any.
    //
    cout << "call_Hello_getGreeting(): "
         << "success: got back..."
         << endl;
    cout << "    _result = ";
    global_print->print_string(cout, _result, 1);
    cout << endl;

    //--------
    // No memory management issues to take care of
    //--------
}