diff -ru SDL2-2.0.8.orig/src/video/windows/SDL_windowskeyboard.c SDL2-2.0.8/src/video/windows/SDL_windowskeyboard.c

--- SDL2-2.0.8.orig/src/video/windows/SDL_windowskeyboard.c     2018-03-01 17:34:43.000000000 +0100

+++ SDL2-2.0.8/src/video/windows/SDL_windowskeyboard.c  2020-10-05 00:37:25.684238476 +0200

@@ -30,6 +30,10 @@

 #include <imm.h>

 #include <oleauto.h>

+#ifndef CFS_FORCE_POSITION

+#define CFS_FORCE_POSITION 0x0020

+#endif

+

 #ifndef SDL_DISABLE_WINDOWS_IME

 static void IME_Init(SDL_VideoData *videodata, HWND hwnd);

 static void IME_Enable(SDL_VideoData *videodata, HWND hwnd);

diff -ru SDL2-2.0.8.orig/src/video/windows/SDL_msctf.h SDL2-2.0.8/src/video/windows/SDL_msctf.h

--- SDL2-2.0.8.orig/src/video/windows/SDL_msctf.h       2018-03-01 17:34:43.000000000 +0100

+++ SDL2-2.0.8/src/video/windows/SDL_msctf.h    2020-10-04 12:38:34.746446128 +0200

@@ -22,7 +22,18 @@

 #ifndef SDL_msctf_h_

 #define SDL_msctf_h_

-#include <unknwn.h>

+#include <windows.h>

+#include <stdint.h>

+typedef uint16_t* BSTR;

+typedef DWORD HIMCC;

+#define NEAR

+#define FAR

+typedef struct tagCANDIDATEFORM {

+   DWORD dwIndex;

+   DWORD dwStyle;

+   POINT ptCurrentPos;

+   RECT rcArea;

+} CANDIDATEFORM,*PCANDIDATEFORM,*NPCANDIDATEFORM,*LPCANDIDATEFORM;

 #define     TF_INVALID_COOKIE               (0xffffffff)

 #define     TF_IPSINK_FLAG_ACTIVE           0x0001

@@ -53,20 +53,20 @@

 typedef struct ITfThreadMgrVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfThreadMgr *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfThreadMgr *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfThreadMgr *);

-    HRESULT (STDMETHODCALLTYPE *Activate)(ITfThreadMgr *, TfClientId *);

-    HRESULT (STDMETHODCALLTYPE *Deactivate)(ITfThreadMgr *);

-    HRESULT (STDMETHODCALLTYPE *CreateDocumentMgr)(ITfThreadMgr *);

-    HRESULT (STDMETHODCALLTYPE *EnumDocumentMgrs)(ITfThreadMgr *, IEnumTfDocumentMgrs **);

-    HRESULT (STDMETHODCALLTYPE *GetFocus)(ITfThreadMgr *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *SetFocus)(ITfThreadMgr *, ITfDocumentMgr *);

-    HRESULT (STDMETHODCALLTYPE *AssociateFocus)(ITfThreadMgr *, HWND, ITfDocumentMgr *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *IsThreadFocus)(ITfThreadMgr *, BOOL *);

-    HRESULT (STDMETHODCALLTYPE *GetFunctionProvider)(ITfThreadMgr *, REFCLSID, ITfFunctionProvider **);

-    HRESULT (STDMETHODCALLTYPE *EnumFunctionProviders)(ITfThreadMgr *, IEnumTfFunctionProviders **);

-    HRESULT (STDMETHODCALLTYPE *GetGlobalCompartment)(ITfThreadMgr *, ITfCompartmentMgr **);

+    HRESULT (__stdcall *QueryInterface)(ITfThreadMgr *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfThreadMgr *);

+    ULONG (__stdcall *Release)(ITfThreadMgr *);

+    HRESULT (__stdcall *Activate)(ITfThreadMgr *, TfClientId *);

+    HRESULT (__stdcall *Deactivate)(ITfThreadMgr *);

+    HRESULT (__stdcall *CreateDocumentMgr)(ITfThreadMgr *);

+    HRESULT (__stdcall *EnumDocumentMgrs)(ITfThreadMgr *, IEnumTfDocumentMgrs **);

+    HRESULT (__stdcall *GetFocus)(ITfThreadMgr *, ITfDocumentMgr **);

+    HRESULT (__stdcall *SetFocus)(ITfThreadMgr *, ITfDocumentMgr *);

+    HRESULT (__stdcall *AssociateFocus)(ITfThreadMgr *, HWND, ITfDocumentMgr *, ITfDocumentMgr **);

+    HRESULT (__stdcall *IsThreadFocus)(ITfThreadMgr *, BOOL *);

+    HRESULT (__stdcall *GetFunctionProvider)(ITfThreadMgr *, REFCLSID, ITfFunctionProvider **);

+    HRESULT (__stdcall *EnumFunctionProviders)(ITfThreadMgr *, IEnumTfFunctionProviders **);

+    HRESULT (__stdcall *GetGlobalCompartment)(ITfThreadMgr *, ITfCompartmentMgr **);

 } ITfThreadMgrVtbl;

 struct ITfThreadMgr

@@ -76,22 +76,22 @@

 typedef struct ITfThreadMgrExVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfThreadMgrEx *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfThreadMgrEx *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfThreadMgrEx *);

-    HRESULT (STDMETHODCALLTYPE *Activate)(ITfThreadMgrEx *, TfClientId *);

-    HRESULT (STDMETHODCALLTYPE *Deactivate)(ITfThreadMgrEx *);

-    HRESULT (STDMETHODCALLTYPE *CreateDocumentMgr)(ITfThreadMgrEx *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *EnumDocumentMgrs)(ITfThreadMgrEx *, IEnumTfDocumentMgrs **);

-    HRESULT (STDMETHODCALLTYPE *GetFocus)(ITfThreadMgrEx *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *SetFocus)(ITfThreadMgrEx *, ITfDocumentMgr *);

-    HRESULT (STDMETHODCALLTYPE *AssociateFocus)(ITfThreadMgrEx *, ITfDocumentMgr *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *IsThreadFocus)(ITfThreadMgrEx *, BOOL *);

-    HRESULT (STDMETHODCALLTYPE *GetFunctionProvider)(ITfThreadMgrEx *, REFCLSID, ITfFunctionProvider **);

-    HRESULT (STDMETHODCALLTYPE *EnumFunctionProviders)(ITfThreadMgrEx *, IEnumTfFunctionProviders **);

-    HRESULT (STDMETHODCALLTYPE *GetGlobalCompartment)(ITfThreadMgrEx *, ITfCompartmentMgr **);

-    HRESULT (STDMETHODCALLTYPE *ActivateEx)(ITfThreadMgrEx *, TfClientId *, DWORD);

-    HRESULT (STDMETHODCALLTYPE *GetActiveFlags)(ITfThreadMgrEx *, DWORD *);

+    HRESULT (__stdcall *QueryInterface)(ITfThreadMgrEx *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfThreadMgrEx *);

+    ULONG (__stdcall *Release)(ITfThreadMgrEx *);

+    HRESULT (__stdcall *Activate)(ITfThreadMgrEx *, TfClientId *);

+    HRESULT (__stdcall *Deactivate)(ITfThreadMgrEx *);

+    HRESULT (__stdcall *CreateDocumentMgr)(ITfThreadMgrEx *, ITfDocumentMgr **);

+    HRESULT (__stdcall *EnumDocumentMgrs)(ITfThreadMgrEx *, IEnumTfDocumentMgrs **);

+    HRESULT (__stdcall *GetFocus)(ITfThreadMgrEx *, ITfDocumentMgr **);

+    HRESULT (__stdcall *SetFocus)(ITfThreadMgrEx *, ITfDocumentMgr *);

+    HRESULT (__stdcall *AssociateFocus)(ITfThreadMgrEx *, ITfDocumentMgr *, ITfDocumentMgr **);

+    HRESULT (__stdcall *IsThreadFocus)(ITfThreadMgrEx *, BOOL *);

+    HRESULT (__stdcall *GetFunctionProvider)(ITfThreadMgrEx *, REFCLSID, ITfFunctionProvider **);

+    HRESULT (__stdcall *EnumFunctionProviders)(ITfThreadMgrEx *, IEnumTfFunctionProviders **);

+    HRESULT (__stdcall *GetGlobalCompartment)(ITfThreadMgrEx *, ITfCompartmentMgr **);

+    HRESULT (__stdcall *ActivateEx)(ITfThreadMgrEx *, TfClientId *, DWORD);

+    HRESULT (__stdcall *GetActiveFlags)(ITfThreadMgrEx *, DWORD *);

 } ITfThreadMgrExVtbl;

 struct ITfThreadMgrEx

@@ -101,15 +101,15 @@

 typedef struct ITfDocumentMgrVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfDocumentMgr *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfDocumentMgr *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfDocumentMgr *);

-    HRESULT (STDMETHODCALLTYPE *CreateContext)(ITfDocumentMgr *, TfClientId, DWORD, IUnknown *, ITfContext **, TfEditCookie *);

-    HRESULT (STDMETHODCALLTYPE *Push)(ITfDocumentMgr *, ITfContext *);

-    HRESULT (STDMETHODCALLTYPE *Pop)(ITfDocumentMgr *);

-    HRESULT (STDMETHODCALLTYPE *GetTop)(ITfDocumentMgr *, ITfContext **);

-    HRESULT (STDMETHODCALLTYPE *GetBase)(ITfDocumentMgr *, ITfContext **);

-    HRESULT (STDMETHODCALLTYPE *EnumContexts)(ITfDocumentMgr *, IEnumTfContexts **);

+    HRESULT (__stdcall *QueryInterface)(ITfDocumentMgr *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfDocumentMgr *);

+    ULONG (__stdcall *Release)(ITfDocumentMgr *);

+    HRESULT (__stdcall *CreateContext)(ITfDocumentMgr *, TfClientId, DWORD, IUnknown *, ITfContext **, TfEditCookie *);

+    HRESULT (__stdcall *Push)(ITfDocumentMgr *, ITfContext *);

+    HRESULT (__stdcall *Pop)(ITfDocumentMgr *);

+    HRESULT (__stdcall *GetTop)(ITfDocumentMgr *, ITfContext **);

+    HRESULT (__stdcall *GetBase)(ITfDocumentMgr *, ITfContext **);

+    HRESULT (__stdcall *EnumContexts)(ITfDocumentMgr *, IEnumTfContexts **);

 } ITfDocumentMgrVtbl;

 struct ITfDocumentMgr

@@ -119,12 +119,12 @@

 typedef struct ITfUIElementSinkVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfUIElementSink *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfUIElementSink *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfUIElementSink *);

-    HRESULT (STDMETHODCALLTYPE *BeginUIElement)(ITfUIElementSink *, DWORD, BOOL *);

-    HRESULT (STDMETHODCALLTYPE *UpdateUIElement)(ITfUIElementSink *, DWORD);

-    HRESULT (STDMETHODCALLTYPE *EndUIElement)(ITfUIElementSink *, DWORD);

+    HRESULT (__stdcall *QueryInterface)(ITfUIElementSink *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfUIElementSink *);

+    ULONG (__stdcall *Release)(ITfUIElementSink *);

+    HRESULT (__stdcall *BeginUIElement)(ITfUIElementSink *, DWORD, BOOL *);

+    HRESULT (__stdcall *UpdateUIElement)(ITfUIElementSink *, DWORD);

+    HRESULT (__stdcall *EndUIElement)(ITfUIElementSink *, DWORD);

 } ITfUIElementSinkVtbl;

 struct ITfUIElementSink

@@ -134,14 +134,14 @@

 typedef struct ITfUIElementMgrVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfUIElementMgr *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfUIElementMgr *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfUIElementMgr *);

-    HRESULT (STDMETHODCALLTYPE *BeginUIElement)(ITfUIElementMgr *, ITfUIElement *, BOOL *, DWORD *);

-    HRESULT (STDMETHODCALLTYPE *UpdateUIElement)(ITfUIElementMgr *, DWORD);

-    HRESULT (STDMETHODCALLTYPE *EndUIElement)(ITfUIElementMgr *, DWORD);

-    HRESULT (STDMETHODCALLTYPE *GetUIElement)(ITfUIElementMgr *, DWORD, ITfUIElement **);

-    HRESULT (STDMETHODCALLTYPE *EnumUIElements)(ITfUIElementMgr *, IEnumTfUIElements **);

+    HRESULT (__stdcall *QueryInterface)(ITfUIElementMgr *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfUIElementMgr *);

+    ULONG (__stdcall *Release)(ITfUIElementMgr *);

+    HRESULT (__stdcall *BeginUIElement)(ITfUIElementMgr *, ITfUIElement *, BOOL *, DWORD *);

+    HRESULT (__stdcall *UpdateUIElement)(ITfUIElementMgr *, DWORD);

+    HRESULT (__stdcall *EndUIElement)(ITfUIElementMgr *, DWORD);

+    HRESULT (__stdcall *GetUIElement)(ITfUIElementMgr *, DWORD, ITfUIElement **);

+    HRESULT (__stdcall *EnumUIElements)(ITfUIElementMgr *, IEnumTfUIElements **);

 } ITfUIElementMgrVtbl;

 struct ITfUIElementMgr

@@ -151,21 +151,21 @@

 typedef struct ITfCandidateListUIElementVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfCandidateListUIElement *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfCandidateListUIElement *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfCandidateListUIElement *);

-    HRESULT (STDMETHODCALLTYPE *GetDescription)(ITfCandidateListUIElement *, BSTR *);

-    HRESULT (STDMETHODCALLTYPE *GetGUID)(ITfCandidateListUIElement *, GUID *);

-    HRESULT (STDMETHODCALLTYPE *Show)(ITfCandidateListUIElement *, BOOL);

-    HRESULT (STDMETHODCALLTYPE *IsShown)(ITfCandidateListUIElement *, BOOL *);

-    HRESULT (STDMETHODCALLTYPE *GetUpdatedFlags)(ITfCandidateListUIElement *, DWORD *);

-    HRESULT (STDMETHODCALLTYPE *GetDocumentMgr)(ITfCandidateListUIElement *, ITfDocumentMgr **);

-    HRESULT (STDMETHODCALLTYPE *GetCount)(ITfCandidateListUIElement *, UINT *);

-    HRESULT (STDMETHODCALLTYPE *GetSelection)(ITfCandidateListUIElement *, UINT *);

-    HRESULT (STDMETHODCALLTYPE *GetString)(ITfCandidateListUIElement *, UINT, BSTR *);

-    HRESULT (STDMETHODCALLTYPE *GetPageIndex)(ITfCandidateListUIElement *, UINT *, UINT, UINT *);

-    HRESULT (STDMETHODCALLTYPE *SetPageIndex)(ITfCandidateListUIElement *, UINT *, UINT);

-    HRESULT (STDMETHODCALLTYPE *GetCurrentPage)(ITfCandidateListUIElement *, UINT *);

+    HRESULT (__stdcall *QueryInterface)(ITfCandidateListUIElement *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfCandidateListUIElement *);

+    ULONG (__stdcall *Release)(ITfCandidateListUIElement *);

+    HRESULT (__stdcall *GetDescription)(ITfCandidateListUIElement *, BSTR *);

+    HRESULT (__stdcall *GetGUID)(ITfCandidateListUIElement *, GUID *);

+    HRESULT (__stdcall *Show)(ITfCandidateListUIElement *, BOOL);

+    HRESULT (__stdcall *IsShown)(ITfCandidateListUIElement *, BOOL *);

+    HRESULT (__stdcall *GetUpdatedFlags)(ITfCandidateListUIElement *, DWORD *);

+    HRESULT (__stdcall *GetDocumentMgr)(ITfCandidateListUIElement *, ITfDocumentMgr **);

+    HRESULT (__stdcall *GetCount)(ITfCandidateListUIElement *, UINT *);

+    HRESULT (__stdcall *GetSelection)(ITfCandidateListUIElement *, UINT *);

+    HRESULT (__stdcall *GetString)(ITfCandidateListUIElement *, UINT, BSTR *);

+    HRESULT (__stdcall *GetPageIndex)(ITfCandidateListUIElement *, UINT *, UINT, UINT *);

+    HRESULT (__stdcall *SetPageIndex)(ITfCandidateListUIElement *, UINT *, UINT);

+    HRESULT (__stdcall *GetCurrentPage)(ITfCandidateListUIElement *, UINT *);

 } ITfCandidateListUIElementVtbl;

 struct ITfCandidateListUIElement

@@ -175,19 +175,19 @@

 typedef struct ITfReadingInformationUIElementVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfReadingInformationUIElement *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfReadingInformationUIElement *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfReadingInformationUIElement *);

-    HRESULT (STDMETHODCALLTYPE *GetDescription)(ITfReadingInformationUIElement *, BSTR *);

-    HRESULT (STDMETHODCALLTYPE *GetGUID)(ITfReadingInformationUIElement *, GUID *);

-    HRESULT (STDMETHODCALLTYPE *Show)(ITfReadingInformationUIElement *, BOOL);

-    HRESULT (STDMETHODCALLTYPE *IsShown)(ITfReadingInformationUIElement *, BOOL *);

-    HRESULT (STDMETHODCALLTYPE *GetUpdatedFlags)(ITfReadingInformationUIElement *, DWORD *);

-    HRESULT (STDMETHODCALLTYPE *GetContext)(ITfReadingInformationUIElement *, ITfContext **);

-    HRESULT (STDMETHODCALLTYPE *GetString)(ITfReadingInformationUIElement *, BSTR *);

-    HRESULT (STDMETHODCALLTYPE *GetMaxReadingStringLength)(ITfReadingInformationUIElement *, UINT *);

-    HRESULT (STDMETHODCALLTYPE *GetErrorIndex)(ITfReadingInformationUIElement *, UINT *);

-    HRESULT (STDMETHODCALLTYPE *IsVerticalOrderPreferred)(ITfReadingInformationUIElement *, BOOL *);

+    HRESULT (__stdcall *QueryInterface)(ITfReadingInformationUIElement *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfReadingInformationUIElement *);

+    ULONG (__stdcall *Release)(ITfReadingInformationUIElement *);

+    HRESULT (__stdcall *GetDescription)(ITfReadingInformationUIElement *, BSTR *);

+    HRESULT (__stdcall *GetGUID)(ITfReadingInformationUIElement *, GUID *);

+    HRESULT (__stdcall *Show)(ITfReadingInformationUIElement *, BOOL);

+    HRESULT (__stdcall *IsShown)(ITfReadingInformationUIElement *, BOOL *);

+    HRESULT (__stdcall *GetUpdatedFlags)(ITfReadingInformationUIElement *, DWORD *);

+    HRESULT (__stdcall *GetContext)(ITfReadingInformationUIElement *, ITfContext **);

+    HRESULT (__stdcall *GetString)(ITfReadingInformationUIElement *, BSTR *);

+    HRESULT (__stdcall *GetMaxReadingStringLength)(ITfReadingInformationUIElement *, UINT *);

+    HRESULT (__stdcall *GetErrorIndex)(ITfReadingInformationUIElement *, UINT *);

+    HRESULT (__stdcall *IsVerticalOrderPreferred)(ITfReadingInformationUIElement *, BOOL *);

 } ITfReadingInformationUIElementVtbl;

 struct ITfReadingInformationUIElement

@@ -197,13 +197,13 @@

 typedef struct ITfUIElementVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfUIElement *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfUIElement *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfUIElement *);

-    HRESULT (STDMETHODCALLTYPE *GetDescription)(ITfUIElement *, BSTR *);

-    HRESULT (STDMETHODCALLTYPE *GetGUID)(ITfUIElement *, GUID *);

-    HRESULT (STDMETHODCALLTYPE *Show)(ITfUIElement *, BOOL);

-    HRESULT (STDMETHODCALLTYPE *IsShown)(ITfUIElement *, BOOL *);

+    HRESULT (__stdcall *QueryInterface)(ITfUIElement *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfUIElement *);

+    ULONG (__stdcall *Release)(ITfUIElement *);

+    HRESULT (__stdcall *GetDescription)(ITfUIElement *, BSTR *);

+    HRESULT (__stdcall *GetGUID)(ITfUIElement *, GUID *);

+    HRESULT (__stdcall *Show)(ITfUIElement *, BOOL);

+    HRESULT (__stdcall *IsShown)(ITfUIElement *, BOOL *);

 } ITfUIElementVtbl;

 struct ITfUIElement

@@ -213,10 +213,10 @@

 typedef struct ITfInputProcessorProfileActivationSinkVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfInputProcessorProfileActivationSink *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfInputProcessorProfileActivationSink *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfInputProcessorProfileActivationSink *);

-    HRESULT (STDMETHODCALLTYPE *OnActivated)(ITfInputProcessorProfileActivationSink *, DWORD, LANGID, REFCLSID, REFGUID, REFGUID, HKL, DWORD);

+    HRESULT (__stdcall *QueryInterface)(ITfInputProcessorProfileActivationSink *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfInputProcessorProfileActivationSink *);

+    ULONG (__stdcall *Release)(ITfInputProcessorProfileActivationSink *);

+    HRESULT (__stdcall *OnActivated)(ITfInputProcessorProfileActivationSink *, DWORD, LANGID, REFCLSID, REFGUID, REFGUID, HKL, DWORD);

 } ITfInputProcessorProfileActivationSinkVtbl;

@@ -227,11 +227,11 @@

 typedef struct ITfSourceVtbl

 {

-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(ITfSource *, REFIID, void **);

-    ULONG (STDMETHODCALLTYPE *AddRef)(ITfSource *);

-    ULONG (STDMETHODCALLTYPE *Release)(ITfSource *);

-    HRESULT (STDMETHODCALLTYPE *AdviseSink)(ITfSource *, REFIID, IUnknown *, DWORD *);

-    HRESULT (STDMETHODCALLTYPE *UnadviseSink)(ITfSource *, DWORD);

+    HRESULT (__stdcall *QueryInterface)(ITfSource *, REFIID, void **);

+    ULONG (__stdcall *AddRef)(ITfSource *);

+    ULONG (__stdcall *Release)(ITfSource *);

+    HRESULT (__stdcall *AdviseSink)(ITfSource *, REFIID, IUnknown *, DWORD *);

+    HRESULT (__stdcall *UnadviseSink)(ITfSource *, DWORD);

 } ITfSourceVtbl;

 struct ITfSource