[Dev-C++] DirectPlay

[<A_B...@gm...>]

Hi,
I installed the directx package and tried to compile the first direct play
tutorial from the MS-DirectX8 sdk (sdk not installed, because DX-devpack is
installed).
At the linker section I includet "libdplayx.a" and "libdxguid.a".
In the sourcecode I includet "dplay8.h" (for testing I includet "dplay.h",
too).
But if I try to compile the code I get these error messages:

 
[Linker error] undefined reference to `CoInitializeEx@8'
[Linker error] undefined reference to `CoCreateInstance@20'
[Linker error] undefined reference to `CoUninitialize@0' 
[Linker error] undefined reference to `CoCreateInstance@20'
[Build Error]  [out/DPlay.exe] Error 1


Has someone experiences with directPlay and can help me with this ???


The complete source:

#define INITGUID
#define _WIN32_DCOM

#include <iostream>
#include <stdlib.h>
#include <dplay.h> // not nessesary
#include <dplay8.h>

using namespace std;

IDirectPlay8Peer* g_pDP = NULL;    // DirectPlay peer object

// Funktionen
HRESULT WINAPI DirectPlayMessageHandler(PVOID pvUserContext, DWORD
dwMessageId, PVOID pMsgBuffer);
HRESULT InitDirectPlay();
void    CleanupDirectPlay();

// Hilfs-Makros
#define SAFE_DELETE(p)       { if(p) { delete (p);     (p)=NULL; } }
#define SAFE_DELETE_ARRAY(p) { if(p) { delete[] (p);   (p)=NULL; } }
#define SAFE_RELEASE(p)      { if(p) { (p)->Release(); (p)=NULL; } }

// {76327E56-BBD7-4e3d-938B-EF1DC94080B5}
DEFINE_GUID(DPlayTest, 0x76327e56, 0xbbd7, 0x4e3d, 0x93, 0x8b, 0xef, 0x1d,
0xc9, 0x40, 0x80, 0xb5);

int main(int argc, char *argv[]){
  HRESULT                     hr;
  DPN_SERVICE_PROVIDER_INFO*  pdnSPInfo       = NULL;
  DPN_SERVICE_PROVIDER_INFO*  pdnSPInfoEnum   = NULL;
  DWORD                       dwItems         = 0;
  DWORD                       dwSize          = 0;
  DWORD                       i;

  // COM initialisieren um CoCreateInstance benutzen zu können
  CoInitializeEx(NULL, COINIT_MULTITHREADED);
  
  // DirectPlay initialisieren
  if(FAILED(hr = InitDirectPlay())){
	  printf("DirectPlay Initialisierung fehlgeschlagen:  0x%X\n", hr);
	  goto LCleanup;
  }

  // alle Service Provider Enumerieren
  hr = g_pDP->EnumServiceProviders(NULL, NULL, NULL, &dwSize, &dwItems, 0);
  if(hr != DPNERR_BUFFERTOOSMALL){
    printf("Enumerierung der Service Provider fehlgeschlagen:  0x%X\n", hr);
    goto LCleanup;
  }
  pdnSPInfo = (DPN_SERVICE_PROVIDER_INFO*) new BYTE[dwSize];
  if(FAILED(hr = g_pDP->EnumServiceProviders(NULL, NULL, pdnSPInfo, &dwSize,
&dwItems, 0))){
    printf("Enumerierung der Service Provider fehlgeschlagen:  0x%X\n", hr);
    goto LCleanup;
  }

  // Alle Provider durchlaufen und ausdrucken
  pdnSPInfoEnum = pdnSPInfo;
  for(i = 0; i < dwItems; i++){
    printf("Service Provider gefunden:  %S\n", pdnSPInfoEnum->pwszName);
    pdnSPInfoEnum++;
  }
  
LCleanup:
  SAFE_DELETE_ARRAY(pdnSPInfo);
  CleanupDirectPlay();
  CoUninitialize();
  
  system("PAUSE");	
  return 0;
}

HRESULT WINAPI DirectPlayMessageHandler( PVOID pvUserContext, DWORD
dwMessageId, PVOID pMsgBuffer){
  return S_OK;
}

HRESULT InitDirectPlay(){
  HRESULT hr = S_OK;

  // IDirectPlay8Peer Objekt erstellen
  if(FAILED(hr = CoCreateInstance(CLSID_DirectPlay8Peer, NULL,
CLSCTX_INPROC_SERVER, IID_IDirectPlay8Peer, (LPVOID*) &g_pDP))){
    printf("Erstellen des IDirectPlay8Peer Objekts fehlgeschlagen:  0x%X\n",
hr);
    goto LCleanup;
  }

  // DirectPlay initialisieren
  if(FAILED(hr = g_pDP->Initialize(NULL, DirectPlayMessageHandler, 0 ))){
    printf("Initialisierung von DirectPlay fehlgeschlagen:  0x%X\n", hr);
    goto LCleanup;
  }
    
LCleanup:
  return hr;
}

void CleanupDirectPlay(){
  // DirectPlay löschen
  if(g_pDP)
    g_pDP->Close(0);

  SAFE_RELEASE(g_pDP);
}