[IMM32][SDK] Implement GetKeyboardLayoutCP (#6068)

- Add IMM32!GetKeyboardLayoutCP function.
- Add it to <imm32_undoc.h>.
- Delete ImmDisableLegacyIME and
  ImmSendMessageToActiveDefImeWndW functions
  (2k3/xp IMM32 doesn't have such functions).
- Modify imm32.spec.
- Refer ntdll!RtlDllShutdownInProgress function (that is WinXP+).
CORE-19268

dll/win32/imm32/ctf.c

@@ -1,7 +1,7 @@
 /*
  * PROJECT:     ReactOS IMM32
  * LICENSE:     LGPL-2.1-or-later (https://spdx.org/licenses/LGPL-2.1-or-later)
- * PURPOSE:     Implementing the IMM32 Cicero-aware Text Framework (CTF)
+ * PURPOSE:     Implementing IMM CTF (Collaborative Translation Framework)
  * COPYRIGHT:   Copyright 2022-2023 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
  */
 
@@ -11,11 +11,8 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(imm);
 
-/* FIXME: Use RTL */
-static BOOL WINAPI RtlDllShutdownInProgress(VOID)
-{
-    return FALSE;
-}
+/* FIXME: Use proper header */
+BOOLEAN WINAPI RtlDllShutdownInProgress(VOID);
 
 static BOOL Imm32InsideLoaderLock(VOID)
 {
@@ -201,17 +198,7 @@ VOID Imm32TF_InvalidAssemblyListCacheIfExist(VOID)
 }
 
 /***********************************************************************
- * CTF IME support
- *
- * TSF stands for "Text Services Framework". "Cicero" is the code name of TSF.
- * CTF stands for "Cicero-aware Text Framework".
- *
- * Comparing with old-style IMM IME, the combination of CTF IME and TSF provides
- * new-style and high-level input method.
- *
- * The CTF IME file is a DLL file that the software developer distributes.
- * The export functions of the CTF IME file are defined in <CtfImeTable.h> of
- * this folder.
+ * CTF (Collaborative Translation Framework) IME support
  */
 
 /* "Active IMM" compatibility flags */

dll/win32/imm32/ime.c

@@ -925,15 +925,6 @@ BOOL WINAPI ImmNotifyIME(HIMC hIMC, DWORD dwAction, DWORD dwIndex, DWORD dwValue
     return ret;
 }
 
-/***********************************************************************
- *              ImmDisableLegacyIME(IMM32.@)
- */
-BOOL WINAPI ImmDisableLegacyIME(void)
-{
-    FIXME("stub\n");
-    return TRUE;
-}
-
 /***********************************************************************
  *              ImmGetImeInfoEx (IMM32.@)
  */

dll/win32/imm32/imm.c

@@ -14,13 +14,12 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(imm);
 
-HMODULE ghImm32Inst = NULL; // Win: ghInst
-PSERVERINFO gpsi = NULL; // Win: gpsi
-SHAREDINFO gSharedInfo = { NULL }; // Win: gSharedInfo
-BYTE gfImmInitialized = FALSE; // Win: gfInitialized
+HMODULE ghImm32Inst = NULL; /* The IMM32 instance */
+PSERVERINFO gpsi = NULL;
+SHAREDINFO gSharedInfo = { NULL };
+BYTE gfImmInitialized = FALSE; /* Is IMM32 initialized? */
 ULONG_PTR gHighestUserAddress = 0;
 
-// Win: ImmInitializeGlobals
 static BOOL APIENTRY ImmInitializeGlobals(HMODULE hMod)
 {
     NTSTATUS status;
@@ -1257,6 +1256,29 @@ BOOL WINAPI ImmSetActiveContextConsoleIME(HWND hwnd, BOOL fFlag)
     return ImmSetActiveContext(hwnd, hIMC, fFlag);
 }
 
+/***********************************************************************
+ *              GetKeyboardLayoutCP (IMM32.@)
+ */
+UINT WINAPI GetKeyboardLayoutCP(_In_ LANGID wLangId)
+{
+    WCHAR szText[8];
+    static LANGID s_wKeyboardLangIdCache = 0;
+    static UINT s_uKeyboardLayoutCPCache = 0;
+
+    TRACE("(%u)\n", wLangId);
+
+    if (wLangId == s_wKeyboardLangIdCache)
+        return s_uKeyboardLayoutCPCache;
+
+    if (!GetLocaleInfoW(wLangId, LOCALE_IDEFAULTANSICODEPAGE, szText, _countof(szText)))
+        return 0;
+
+    s_wKeyboardLangIdCache = wLangId;
+    szText[_countof(szText) - 1] = UNICODE_NULL; /* Avoid buffer overrun */
+    s_uKeyboardLayoutCPCache = wcstol(szText, NULL, 10);
+    return s_uKeyboardLayoutCPCache;
+}
+
 #ifndef NDEBUG
 VOID APIENTRY Imm32UnitTest(VOID)
 {

dll/win32/imm32/imm32.spec

@@ -17,6 +17,7 @@
 @ stdcall CtfImmSetAppCompatFlags(long)
 @ stdcall CtfImmSetCiceroStartInThread(long)
 @ stdcall CtfImmTIMActivate(ptr)
+@ stdcall GetKeyboardLayoutCP(long)
 @ stdcall ImmActivateLayout(ptr)
 @ stdcall ImmAssociateContext(ptr ptr)
 @ stdcall ImmAssociateContextEx(ptr ptr long)
@@ -31,7 +32,6 @@
 @ stdcall ImmDestroySoftKeyboard(ptr)
 @ stdcall ImmDisableIME(long)
 @ stdcall ImmDisableIme(long) ImmDisableIME
-@ stdcall ImmDisableLegacyIME()
 @ stdcall ImmDisableTextFrameService(long)
 @ stdcall ImmEnumInputContext(long ptr long)
 @ stdcall ImmEnumRegisterWordA(long ptr str long str ptr)
@@ -105,7 +105,6 @@
 @ stdcall ImmRequestMessageW(ptr ptr ptr)
 @ stdcall ImmSendIMEMessageExA(ptr ptr)
 @ stdcall ImmSendIMEMessageExW(ptr ptr)
-@ stdcall ImmSendMessageToActiveDefImeWndW(long ptr ptr)
 @ stdcall ImmSetActiveContext(ptr ptr long)
 @ stdcall ImmSetActiveContextConsoleIME(ptr long)
 @ stdcall ImmSetCandidateWindow(ptr ptr)

dll/win32/imm32/keymsg.c

@@ -1184,24 +1184,6 @@ LRESULT WINAPI ImmRequestMessageW(HIMC hIMC, WPARAM wParam, LPARAM lParam)
     return ImmRequestMessageAW(hIMC, wParam, lParam, FALSE);
 }
 
-/***********************************************************************
- *              ImmSendMessageToActiveDefImeWndW (IMM32.@)
- */
-LRESULT WINAPI
-ImmSendMessageToActiveDefImeWndW(UINT uMsg, WPARAM wParam, LPARAM lParam)
-{
-    HWND hwndIME;
-
-    if (uMsg != WM_COPYDATA)
-        return 0;
-
-    hwndIME = (HWND)NtUserQueryWindow((HWND)wParam, QUERY_WINDOW_DEFAULT_IME);
-    if (IS_NULL_UNEXPECTEDLY(hwndIME))
-        return 0;
-
-    return SendMessageW(hwndIME, uMsg, wParam, lParam);
-}
-
 /***********************************************************************
  *              ImmCallImeConsoleIME (IMM32.@)
  */

sdk/include/reactos/imm32_undoc.h

@@ -11,6 +11,8 @@
 extern "C" {
 #endif
 
+UINT WINAPI GetKeyboardLayoutCP(_In_ LANGID wLangId);
+
 BOOL WINAPI
 ImmGetImeInfoEx(PIMEINFOEX pImeInfoEx, IMEINFOEXCLASS SearchType, PVOID pvSearchKey);