dwmapi: Add a stub for DwmGetGraphicsStreamClient.

dlls/dwmapi/dwmapi.spec

@@ -29,7 +29,7 @@
 @ stdcall DwmFlush()
 @ stdcall DwmGetColorizationColor(ptr long)
 @ stub DwmGetCompositionTimingInfo
-@ stub DwmGetGraphicsStreamClient
+@ stdcall DwmGetGraphicsStreamClient(long ptr)
 @ stub DwmGetGraphicsStreamTransformHint
 @ stdcall DwmGetTransportAttributes(ptr ptr ptr)
 @ stub DwmGetWindowAttribute

dlls/dwmapi/dwmapi_main.c

@@ -110,10 +110,19 @@ HRESULT WINAPI DwmSetWindowAttribute(HWND hwnd, DWORD attributenum, LPCVOID attr
     return E_NOTIMPL;
 }
 
+/**********************************************************************
+ *           DwmGetGraphicsStreamClient         (DWMAPI.@)
+ */
+HRESULT WINAPI DwmGetGraphicsStreamClient(UINT uIndex, UUID *pClientUuid)
+{
+    FIXME("(%d, %p) stub\n", uIndex, pClientUuid);
+
+    return E_NOTIMPL;
+}
 
 /**********************************************************************
- *  *           DwmGetTransportAttributes         (DWMAPI.@)
- *   */
+ *           DwmGetTransportAttributes         (DWMAPI.@)
+ */
 HRESULT WINAPI DwmGetTransportAttributes(BOOL *pfIsRemoting, BOOL *pfIsConnected, DWORD *pDwGeneration)
 {
     FIXME("(%p, %p, %p) stub\n", pfIsRemoting, pfIsConnected, pDwGeneration);