[omniORB] about add_out_arg() in dii

[zhang ji]

Hi all,

I try to find some reference in how to use the
add_out_arg() in DII for my problem:
Below is the interface:
"
struct Parameter {
        string name;
        any value;
};
typedef sequence<Parameter> ParameterSeq;

interface test {
  long diiRequest(in ParameterSeq psin, out
ParameterSeq psout);
};
"

in my client I tried to use _request() to call the
diiRequest() function in server.
Below is the c++ client
"
ParameterSeq psinv, psoutv;

CORBA::Object_var obj =
orb->string_to_object(argv[1]);
	
CORBA::Request_var req = obj->_request("diiRequest");

req->add_in_arg() <<= psinv;
req->add_out_arg() <<= psoutv;
req->set_return_type(CORBA::_tc_long);

req->invoke();
"
Compiling is successful, but I got nothing from the
out result: psoutv but with SystemException.
I once try to set the psout as ParameterSrq_var, but
it also report error when run it.

So can anybody give some hint on that?

Thanks,
Shifeng


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