diff --git a/include/msctf.idl b/include/msctf.idl
index a67dbc1f45a..e17132b09e8 100644
--- a/include/msctf.idl
+++ b/include/msctf.idl
@@ -29,10 +29,14 @@ cpp_quote("#define TF_E_DISCONNECTED    MAKE_HRESULT(SEVERITY_ERROR, FACILITY_IT
 cpp_quote("#define TF_E_ALREADY_EXISTS  MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF, 0x0506)")
 cpp_quote("#define TF_E_NOLOCK          MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF, 0x0201)")
 
+cpp_quote("HRESULT WINAPI SetInputScope(HWND hwnd, INT inputscope);")
+cpp_quote("HRESULT WINAPI SetInputScopes(HWND hwnd, const INT *pInputScopes, UINT cInputScopes, WCHAR **ppszPhraseList, UINT cPhrases, WCHAR *pszRegExp, WCHAR *pszSRGS);")
 cpp_quote("HRESULT WINAPI TF_CreateThreadMgr(ITfThreadMgr **pptim);")
 cpp_quote("HRESULT WINAPI TF_GetThreadMgr(ITfThreadMgr **pptim);")
 cpp_quote("HRESULT WINAPI TF_CreateInputProcessorProfiles(ITfInputProcessorProfiles **ppipr);")
 cpp_quote("HRESULT WINAPI TF_CreateLangBarMgr(ITfLangBarMgr **pppbm);")
+cpp_quote("HRESULT WINAPI TF_CreateLangBarItemMgr(ITfLangBarItemMgr **pplbim);")
+cpp_quote("HRESULT WINAPI TF_InvalidAssemblyListCacheIfExist(void);")
 
 cpp_quote("EXTERN_C const GUID GUID_PROP_TEXTOWNER;")
 cpp_quote("DEFINE_GUID(GUID_PROP_ATTRIBUTE,0x34b45670,0x7526,0x11d2,0xa1,0x47,0x00,0x10,0x5a,0x27,0x99,0xb5);")