dwmapi: Add stub for DwmGetGraphicsStreamTransformHint.

dlls/dwmapi/dwmapi.spec

@@ -30,7 +30,7 @@
 @ stdcall DwmGetColorizationColor(ptr long)
 @ stub DwmGetCompositionTimingInfo
 @ stdcall DwmGetGraphicsStreamClient(long ptr)
-@ stub DwmGetGraphicsStreamTransformHint
+@ stdcall DwmGetGraphicsStreamTransformHint(long ptr)
 @ stdcall DwmGetTransportAttributes(ptr ptr ptr)
 @ stub DwmGetWindowAttribute
 @ stdcall DwmIsCompositionEnabled(ptr)

dlls/dwmapi/dwmapi_main.c

@@ -149,3 +149,13 @@ HRESULT WINAPI DwmEnableMMCSS(BOOL enableMMCSS)
 
     return S_OK;
 }
+
+/**********************************************************************
+ *           DwmGetGraphicsStreamTransformHint         (DWMAPI.@)
+ */
+HRESULT WINAPI DwmGetGraphicsStreamTransformHint(UINT uIndex, MilMatrix3x2D *pTransform)
+{
+    FIXME("(%d, %p) stub\n", uIndex, pTransform);
+
+    return E_NOTIMPL;
+}