uxtheme: Stub out GetThemeTransitionDuration.

dlls/uxtheme/metric.c

@@ -223,3 +223,15 @@ HRESULT WINAPI GetThemeSysString(HTHEME hTheme, int iStringID,
         return MSSTYLES_GetPropertyString(tp, pszStringBuff, cchMaxStringChars);
     return E_PROP_ID_UNSUPPORTED;
 }
+
+/***********************************************************************
+ *      GetThemeTransitionDuration                          (UXTHEME.@)
+ */
+HRESULT WINAPI GetThemeTransitionDuration(HTHEME hTheme, int iPartId, int iStateIdFrom,
+                                          int iStateIdTo, int iPropId, DWORD *pdwDuration)
+{
+    FIXME("(%p, %u, %u, %u, %u, %p) stub\n", hTheme, iPartId, iStateIdFrom, iStateIdTo,
+          iPropId, pdwDuration);
+
+    return E_NOTIMPL;
+}

dlls/uxtheme/uxtheme.spec

@@ -91,6 +91,7 @@
 @ stdcall GetThemeSysString(ptr long wstr long)
 @ stdcall GetThemeTextExtent(ptr ptr long long wstr long long ptr ptr)
 @ stdcall GetThemeTextMetrics(ptr ptr long long ptr)
+@ stdcall GetThemeTransitionDuration(ptr long long long long ptr)
 @ stdcall GetWindowTheme(ptr)
 @ stdcall HitTestThemeBackground(ptr long long long long ptr long int64 ptr)
 @ stdcall IsAppThemed()

include/uxtheme.h

@@ -146,6 +146,7 @@ HRESULT WINAPI GetThemeSysString(HTHEME,int,LPWSTR,int);
 HRESULT WINAPI GetThemeTextExtent(HTHEME,HDC,int,int,LPCWSTR,int,DWORD,
                                   const RECT*,RECT*);
 HRESULT WINAPI GetThemeTextMetrics(HTHEME,HDC,int,int,TEXTMETRICW*);
+HRESULT WINAPI GetThemeTransitionDuration(HTHEME,int,int,int,int,DWORD*);
 HTHEME WINAPI GetWindowTheme(HWND);
 
 #define HTTB_BACKGROUNDSEG          0x0000