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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