I've been trying to get DirectPlay to work recently and thanks to help from here I have the server 100% working. Now on to the client. I'm currently using the below code (roughly copied from Role Playing Games w/ DX) but IDirectPlay8Client::Connect always returns E_INVALIDARG and I have no clue why! Does anyone see the problem with this:?

IDirectPlay8Client *StartClientServer(char* szPlayerName, char* szSessionName, char* szPassword, char* szIPAddress, DWORD dwPort)
{
	IDirectPlay8Client *pDPClient;
	DPN_SERVICE_PROVIDER_INFO* pSP = NULL;
	IDirectPlay8Address *pDPAddress, *pDPHostAddress;
	DPN_APPLICATION_DESC dpad;
	DPN_PLAYER_INFO dppi;
	WCHAR wszSessionName[256];
	WCHAR wszPassword[256];
	WCHAR wszIPAddress[256];
	WCHAR wszPlayerName[256];

	CoCreateInstance(CLSID_DirectPlay8Client, NULL, CLSCTX_INPROC_SERVER, IID_IDirectPlay8Client, (void**)&pDPClient);
	pDPClient->Initialize(NULL, DPClientMessageHandler, NULL);
	CoCreateInstance(CLSID_DirectPlay8Address, NULL, CLSCTX_INPROC_SERVER, IID_IDirectPlay8Address, (void**)&pDPAddress);
	CoCreateInstance(CLSID_DirectPlay8Address, NULL, CLSCTX_INPROC_SERVER, IID_IDirectPlay8Address, (void**)&pDPHostAddress);
	pDPAddress->SetSP(&CLSID_DP8SP_TCPIP);
	pDPHostAddress->SetSP(&CLSID_DP8SP_TCPIP);
	mbstowcs(wszIPAddress, szIPAddress, strlen(szIPAddress)+1);
	pDPHostAddress->AddComponent(DPNA_KEY_HOSTNAME, wszIPAddress, (wcslen(wszIPAddress)+1)*sizeof(WCHAR), DPNA_DATATYPE_STRING);

	pDPHostAddress->AddComponent(DPNA_KEY_PORT, &dwPort, sizeof(DWORD), DPNA_DATATYPE_DWORD);

	ZeroMemory(&dppi, sizeof(DPN_PLAYER_INFO));
	dppi.dwSize = sizeof(DPN_PLAYER_INFO);
	dppi.dwInfoFlags = DPNINFO_NAME | DPNINFO_DATA;
	mbstowcs(wszPlayerName, szPlayerName, strlen(szPlayerName+1));
	dppi.pwszName = wszPlayerName;
	pDPClient->SetClientInfo(&dppi, NULL, NULL, DPNSETCLIENTINFO_SYNC);
	ZeroMemory(&dpad, sizeof(DPN_APPLICATION_DESC));
	dpad.dwSize = sizeof(DPN_APPLICATION_DESC);
	dpad.guidApplication = AppGuid;
	dpad.dwFlags = DPNSESSION_CLIENT_SERVER;
	mbstowcs(wszSessionName, szSessionName, strlen(szSessionName)+1);
	dpad.pwszSessionName = wszSessionName;
	if(szPassword != NULL)
	{
		mbstowcs(wszPassword, szPassword, strlen(szPassword)+1);
		dpad.pwszPassword = wszPassword;
		dpad.dwFlags |= DPNSESSION_REQUIREPASSWORD;
	}

	HRESULT hr = pDPClient->Connect(&dpad, pDPHostAddress, pDPAddress, NULL, NULL, NULL, 0, NULL, NULL, DPNCONNECT_SYNC | DPNENUMHOSTS_OKTOQUERYFORADDRESSING);
	if(FAILED(hr))
		cout << "Connect: " << hr << endl;
	pDPAddress->Release();
	pDPHostAddress->Release();
	return pDPClient;
}

[edited by - ms291052 on February 5, 2004 9:01:58 PM]

bump