quartz: Check whether the pin is connected in IVideoWindow::put_Owner().

dlls/quartz/tests/videorenderer.c

@@ -2396,6 +2396,9 @@ static void test_video_window(void)
     hr = IVideoWindow_put_AutoShow(window, OAFALSE);
     ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_Owner(window, (OAHWND)our_hwnd);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     testfilter_init(&source);
     IFilterGraph2_AddFilter(graph, &source.filter.IBaseFilter_iface, NULL);
     IFilterGraph2_AddFilter(graph, filter, NULL);

dlls/quartz/tests/vmr7.c

@@ -2395,6 +2395,9 @@ static void test_video_window(void)
     hr = IVideoWindow_put_AutoShow(window, OAFALSE);
     ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_Owner(window, (OAHWND)our_hwnd);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     testfilter_init(&source);
     IFilterGraph2_AddFilter(graph, &source.filter.IBaseFilter_iface, NULL);
     IFilterGraph2_AddFilter(graph, filter, NULL);

dlls/quartz/tests/vmr9.c

@@ -2621,6 +2621,9 @@ static void test_video_window(void)
     hr = IVideoWindow_put_AutoShow(window, OAFALSE);
     ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_Owner(window, (OAHWND)our_hwnd);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     testfilter_init(&source);
     IFilterGraph2_AddFilter(graph, &source.filter.IBaseFilter_iface, NULL);
     IFilterGraph2_AddFilter(graph, filter, NULL);

dlls/quartz/window.c

@@ -482,6 +482,9 @@ HRESULT WINAPI BaseControlWindowImpl_put_Owner(IVideoWindow *iface, OAHWND owner
 
     TRACE("window %p, owner %#Ix.\n", window, owner);
 
+    if (!window->pPin->peer)
+        return VFW_E_NOT_CONNECTED;
+
     /* Make sure we are marked as WS_CHILD before reparenting ourselves, so that
      * we do not steal focus. LEGO Island depends on this. */