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IME/IMM Study

What are the window classes being used for IME support?

Windows 10

  • CONFIRMED: There is the IME window class whose window class name is "IME".
  • CONFIRMED: There is the IME UI window class whose window class name is "MSCTFIME UI".

Evidence: Experiment05.md.

Windows 2003

  • CONFIRMED: There is the IME window class whose window class name is "IME".
  • CONFIRMED: There is the IME UI window class whose window class name is "MSCTFIME UI".

Evidence: Experiment01.md.

Windows XP Japanese

  • CONFIRMED: There is the IME window class whose window class name is "IME".
  • CONFIRMED: There is the IME UI window class whose window class name is "imejpstmain81".

Evidence: Experiment07.md.

Windows 2000 Japanese

  • CONFIRMED: There is the IME window class whose window class name is "IME".
  • CONFIRMED: There is the IME UI window class whose window class name is "msime98main".

Evidence: Experiment03.md.

What is "IME" window class?

Windows 10

  • CONFIRMED: It has the window class name of "IME".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has zero class styles.
  • CONFIRMED: It has the window text of "Default IME".
  • CONFIRMED: The process ID of the IME window is same as the process ID of the application.
  • CONFIRMED: The the thread ID of the IME window is same as the thread ID of the application.

Evidence: Experiment05.md.

Windows 2003

  • CONFIRMED: It has the window class name of "IME".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has zero class styles.
  • CONFIRMED: It has the window text of "Default IME".
  • CONFIRMED: The process ID of the IME window is same as the process ID of the application.
  • CONFIRMED: The the thread ID of the IME window is same as the thread ID of the application.

Evidence: Experiment01.md.

Windows XP Japanese

  • CONFIRMED: It has the window class name of "IME".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has zero class styles.
  • CONFIRMED: It has the window text of "Default IME".
  • CONFIRMED: The process ID of the IME window is same as the process ID of the application.
  • CONFIRMED: The the thread ID of the IME window is same as the thread ID of the application.

Evidence: Experiment07.md.

Windows 2000 Japanese

  • CONFIRMED: It has the window class name of "IME".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has zero class styles.
  • CONFIRMED: It has the window text of "Default IME".
  • CONFIRMED: The process ID of the IME window is same as the process ID of the application.
  • CONFIRMED: The the thread ID of the IME window is same as the thread ID of the application.

Evidence: Experiment03.md.

What is the IME UI window?

Windows 10

  • CONFIRMED: Its window class is "MSCTFIME UI".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has CS_IME | CS_GLOBALCLASS class styles.
  • CONFIRMED: It has the window text of "MSCTFIME UI".
  • CONFIRMED: The process ID of it is same as the process ID of the application.
  • CONFIRMED: The thread ID of it is same as the thread ID of the application.

Evidence: Experiment06.md.

Windows 2003

  • CONFIRMED: Its window class is "MSCTFIME UI".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has CS_IME | CS_GLOBALCLASS class styles.
  • CONFIRMED: It has the window text of "M????".
  • CONFIRMED: The process ID of it is same as the process ID of the application.
  • CONFIRMED: The thread ID of it is same as the thread ID of the application.

Evidence: Experiment02.md.

Windows XP Japanese

  • CONFIRMED: Its window class is "imejpstmain81".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has CS_IME | CS_HREDRAW | CS_VREDRAW class styles.
  • CONFIRMED: It has the window text of "imejpstmain81".
  • CONFIRMED: The process ID of it is same as the process ID of the application.
  • CONFIRMED: The thread ID of it is same as the thread ID of the application.

Evidence: Experiment08.md.

Windows 2000 Japanese

  • CONFIRMED: Its window class is "msime98main".
  • CONFIRMED: It has WS_POPUP | WS_DISABLED | WS_CLIPSIBLINGS window styles.
  • CONFIRMED: It has zero extended styles.
  • CONFIRMED: It has CS_IME | CS_HREDRAW | CS_VREDRAW class styles.
  • CONFIRMED: It has the window text of "msime98main".
  • CONFIRMED: The process ID of it is same as the process ID of the application.
  • CONFIRMED: The thread ID of it is same as the thread ID of the application.

Evidence: Experiment04.md.

How is the window hierarchy?

Windows 10

  • CONFIRMED: The GUI application has only one "IME" class window.
  • CONFIRMED: The foreground window of the application owns an "IME" class window.
  • CONFIRMED: If the focus was moved, then the application's "IME" window will be also moved.
  • CONFIRMED: The "IME" class window owns the "MSCTFIME UI" class window.

Evidence: Experiment05.md.

Windows 2003

  • CONFIRMED: The GUI application has only one "IME" class window.
  • CONFIRMED: The foreground window of the application owns an "IME" class window.
  • CONFIRMED: If the focus was moved, then the application's "IME" window will be also moved.
  • CONFIRMED: The "IME" class window owns the "MSCTFIME UI" class window.

Evidence: Experiment01.md.

Windows XP Japanese

  • CONFIRMED: The GUI application has only one "IME" class window.
  • CONFIRMED: The foreground window of the application owns an "IME" class window.
  • CONFIRMED: If the focus was moved, then the application's "IME" window will be also moved.
  • CONFIRMED: The "IME" class window owns the "imejpstmain81" class window.

Evidence: Experiment07.md.

Windows 2000 Japanese

  • CONFIRMED: The GUI application has only one "IME" class window.
  • NOT CONFIRMED: The foreground window of the application owns an "IME" class window.
  • NOT CONFIRMED: If the focus was moved, then the application's "IME" window will be also moved.
  • CONFIRMED: The "IME" class window owns the "msime98main" class window.

What does DefWindowProc for IME support?

The list of IMM functions?

  • ImmAssociateContext
  • ImmAssociateContextEx
  • ImmConfigureIME
  • ImmCreateContext
  • ImmCreateIMCC
  • ImmCreateSoftKeyboard
  • ImmDestroyContext
  • ImmDestroyIMCC
  • ImmDestroySoftKeyboard
  • ImmDisableIME
  • ImmDisableLegacyIME
  • ImmDisableTextFrameService
  • ImmEnumInputContext
  • ImmEnumRegisterWord
  • ImmEscape
  • ImmGenerateMessage
  • ImmGetCandidateList
  • ImmGetCandidateListCount
  • ImmGetCandidateWindow
  • ImmGetCompositionFont
  • ImmGetCompositionString
  • ImmGetCompositionWindow
  • ImmGetContext
  • ImmGetConversionList
  • ImmGetConversionStatus
  • ImmGetDefaultIMEWnd
  • ImmGetDescription
  • ImmGetGuideLine
  • ImmGetHotKey
  • ImmGetIMCCLockCount
  • ImmGetIMCCSize
  • ImmGetIMCLockCount
  • ImmGetIMEFileName
  • ImmGetImeMenuItems
  • ImmGetOpenStatus
  • ImmGetProperty
  • ImmGetRegisterWordStyle
  • ImmGetStatusWindowPos
  • ImmGetVirtualKey
  • ImmInstallIME
  • ImmIsIME
  • ImmIsUIMessage
  • ImmLockIMC
  • ImmLockIMCC
  • ImmNotifyIME
  • ImmRegisterWord
  • ImmReleaseContext
  • ImmRequestMessage
  • ImmReSizeIMCC
  • ImmSetCandidateWindow
  • ImmSetCompositionFont
  • ImmSetCompositionString
  • ImmSetCompositionWindow
  • ImmSetConversionStatus
  • ImmSetHotKey
  • ImmSetOpenStatus
  • ImmSetStatusWindowPos
  • ImmShowSoftKeyboard
  • ImmSimulateHotKey
  • ImmUnlockIMC
  • ImmUnlockIMCC
  • ImmUnregisterWord

The list of IME functions?

  • ImeConfigure
  • ImeConversionList
  • ImeDestroy
  • ImeEnumRegisterWord
  • ImeEscape
  • ImeGetImeMenuItems
  • ImeGetRegisterWordStyle
  • ImeInquire
  • ImeProcessKey
  • ImeRegisterWord
  • ImeSelect
  • ImeSetActiveContext
  • ImeSetCompositionString
  • ImeToAsciiEx
  • ImeUnregisterWord
  • NotifyIME

The list of standard IME messages?

  • WM_IME_STARTCOMPOSITION
  • WM_IME_ENDCOMPOSITION
  • WM_IME_COMPOSITION
  • WM_IME_SETCONTEXT
  • WM_IME_NOTIFY
  • WM_IME_CONTROL
  • WM_IME_COMPOSITIONFULL
  • WM_IME_SELECT
  • WM_IME_CHAR
  • WM_IME_REQUEST
  • WM_IME_KEYDOWN
  • WM_IME_KEYUP

What is imetip.dll?

imetip.dll is a DLL file that is part of Microsoft IME TIP.

  • Windows 10 has imetip.dll in C:\Windows\WinSxS\wow64_microsoft-windows-d..me-eashared-coretip_31bf3856ad364e35_10.0.17134.1_none_69cbc7d426615b1b.

What is imjptip.dll?

imjptip.dll is a DLL file that is part of Japanese Microsoft IME TIP.

  • Windows 10 has imjptip.dll in C:\Windows\System32\IME\IMEJP.

What is MSCTF.dll?

MSCTF.dll is a DLL file that is the core runtime library of Text Services Framework (TSF).

  • Windows 10 has MSCTF.dll in C:\Windows\system32.