External Data Feed on Delphi or CBuilder

[mv_trader]

Hi,

I am doing a custom data feed for NT writing code on C++ (Embarcadero CBuilder). I can connect to NTDirect.DLL, can call Last or Ask or LastPlayback function, but no data go to NT. What I do wrong? Below is a code sample and setting in NT:

1. NT setting: new symbol "RTEST" as stock with external mapping "RTEST"
2. Connected to External Data Feed
3. AT Interface in File menu is checked
4. The code on C++ and Delphi (both don't work):

Header file:
typedef int (*NTDirectAskPlayback)(wchar_t *instrument, double price, int size, wchar_t *timestamp);
typedef int (*NTDirectAsk)(wchar_t *instrument, double price, int size);

extern NTDirectConnected Connected;
extern NTDirectAskPlayback AskPlayback;
extern NTDirectAsk Ask;

cpp file(some functions was omitted)
bool LoadDLLs()
{
UnicodeString NTDirectName="NTDirect.dll";
HINSTANCE h_NTDirect;

h_NTDirect=LoadLib(NTDirectName.c_str());
Connected=(NTDirectConnected)GetProcAddr(h_NTDirec t, "Connected");
AskPlayback=(NTDirectAskPlayback)GetProcAddr(h_NTD irect, "AskPlayback");
Ask=(NTDirectAsk)GetProcAddr(h_NTDirect, "Ask");
}

void __fastcall TForm1::Button3Click(TObject *Sender)
{
int r;
UnicodeString Ticker="RTEST";
UnicodeString Time="20110119100000";

r=Connected(1);
r=Ask(Ticker.w_str(),Price,Volume);
r=AskPlayback(Ticker.w_str(),192080,24,Time.w_str( ));
// r is 0, so function call is success
}

or in Delphi:

Function LastPlayback( Symbol: string; Price: Double; Size: Integer; Timestamp: string ): integer; stdcall; external 'NtDirect.dll';
Function Last( Symbol: ShortString; Price: Double; Size: Integer ): integer; stdcall; external 'NtDirect.dll';

procedure TForm1.Button1Click(Sender: TObject);
var r:integer;
begin
r:=LastPlayback('RTEST',192080,34,'20110120100010' );
r:=Last('RTEST',192080,34);
// r is 0, so function call is success
end;

[NinjaTrader_RyanM1]

Hello mv_trader,

Welcome to the NinjaTrader forums!

Unfortunately our support for this is limited. We can help you verify the setup within the NinjaTrader application. You have everything squared away with the mapping, connections, and AT interface.

Use the control center, orders tab, to verify that you are getting data instead of the charts. Consider trying bid or last in addition to ask. See if you can get other types of account data.

Hopefully other community members can look at your code and offer additional input.