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

dlls/quartz/tests/videorenderer.c

@@ -2387,6 +2387,9 @@ static void test_video_window(void)
     hr = IVideoWindow_get_WindowStyle(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_WindowStyle(window, WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     hr = IVideoWindow_get_AutoShow(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 

dlls/quartz/tests/vmr7.c

@@ -2386,6 +2386,9 @@ static void test_video_window(void)
     hr = IVideoWindow_get_WindowStyle(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_WindowStyle(window, WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     hr = IVideoWindow_get_AutoShow(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 

dlls/quartz/tests/vmr9.c

@@ -2612,6 +2612,9 @@ static void test_video_window(void)
     hr = IVideoWindow_get_WindowStyle(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 
+    hr = IVideoWindow_put_WindowStyle(window, WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
+    ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
+
     hr = IVideoWindow_get_AutoShow(window, &l);
     todo_wine ok(hr == VFW_E_NOT_CONNECTED, "Got hr %#lx.\n", hr);
 

dlls/quartz/window.c

@@ -231,6 +231,8 @@ HRESULT WINAPI BaseControlWindowImpl_put_WindowStyle(IVideoWindow *iface, LONG s
 
     if (style & (WS_DISABLED|WS_HSCROLL|WS_MAXIMIZE|WS_MINIMIZE|WS_VSCROLL))
         return E_INVALIDARG;
+    if (!window->pPin->peer)
+        return VFW_E_NOT_CONNECTED;
 
     SetWindowLongW(window->hwnd, GWL_STYLE, style);
     SetWindowPos(window->hwnd, 0, 0, 0, 0, 0,