dpnet: Store information when Initialize is called.

dlls/dpnet/peer.c

@@ -43,6 +43,10 @@ typedef struct IDirectPlay8PeerImpl
 {
     IDirectPlay8Peer IDirectPlay8Peer_iface;
     LONG ref;
+
+    PFNDPNMESSAGEHANDLER msghandler;
+    DWORD flags;
+    void *usercontext;
 } IDirectPlay8PeerImpl;
 
 static inline IDirectPlay8PeerImpl *impl_from_IDirectPlay8Peer(IDirectPlay8Peer *iface)
@@ -96,8 +100,17 @@ static ULONG WINAPI IDirectPlay8PeerImpl_Release(IDirectPlay8Peer *iface)
 static HRESULT WINAPI IDirectPlay8PeerImpl_Initialize(IDirectPlay8Peer *iface,
         void * const pvUserContext, const PFNDPNMESSAGEHANDLER pfn, const DWORD dwFlags)
 {
+    IDirectPlay8PeerImpl* This = impl_from_IDirectPlay8Peer(iface);
+
     TRACE("(%p)->(%p,%p,%x): stub\n", iface, pvUserContext, pfn, dwFlags);
 
+    if(!pfn)
+        return DPNERR_INVALIDPARAM;
+
+    This->usercontext = pvUserContext;
+    This->msghandler = pfn;
+    This->flags = dwFlags;
+
     return DPN_OK;
 }
 
@@ -502,6 +515,9 @@ HRESULT DPNET_CreateDirectPlay8Peer(IClassFactory *iface, IUnknown *pUnkOuter, R
 
     Client->IDirectPlay8Peer_iface.lpVtbl = &DirectPlay8Peer_Vtbl;
     Client->ref = 1;
+    Client->usercontext = NULL;
+    Client->msghandler = NULL;
+    Client->flags = 0;
 
     ret = IDirectPlay8Peer_QueryInterface(&Client->IDirectPlay8Peer_iface, riid, ppobj);
     IDirectPlay8Peer_Release(&Client->IDirectPlay8Peer_iface);

dlls/dpnet/tests/peer.c

@@ -51,6 +51,9 @@ static void test_init_dp(void)
     hr = CoCreateInstance(&CLSID_DirectPlay8Peer, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectPlay8Peer, (void **)&peer);
     ok(hr == S_OK, "CoCreateInstance failed with 0x%x\n", hr);
 
+    hr = IDirectPlay8Peer_Initialize(peer, NULL, NULL, 0);
+    ok(hr == DPNERR_INVALIDPARAM, "got %x\n", hr);
+
     hr = IDirectPlay8Peer_Initialize(peer, NULL, DirectPlayMessageHandler, 0);
     ok(hr == S_OK, "IDirectPlay8Peer_Initialize failed with %x\n", hr);
 }