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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| No
| Import Library
| -
| Header File
| imm.h
| Unicode
| No
| Platform Notes
| None
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WM_IME_COMPOSITION
The WM_IME_COMPOSITION message is sent to an application when the IME changes
composition status as a result of a key stroke. An application should process
this message if it displays composition characters itself. Otherwise, it should
send the message to the IME window.
chDBCS = (WORD) wParam;
fFlags = (BOOL) lParam;
Parameters
chDBCS
DBCS character representing the latest change to the composition string.
fFlags
Change flag, indicating how the composition string or character changed. This
parameter can be one or more of the following values:
GCS_COMPSTR
| GCS_SETCURSORPOS
| GCS_COMPATTR
| GCS_RESULTSTR
| GCS_COMPCLAUSE
| GCS_RESULTCLAUSE
| GCS_COMPREADSTR
| GCS_RESULTREADSTR
| GCS_COMPREADATTR
| GCS_RESULTREADCLAUSE
| GCS_COMPREADCLAUSE
| GCR_ERRORSTR
| GCS_TYPINGINFO
| GCR_INFOSTR
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Return Values
No return value.
Remarks
For more information about these values, see the "IME Composition String
Values" table in Input Method Editor Constants.
The fFlags parameter can also be a combination of the following values:
Value
| Meaning
| CS_INSERTCHAR
| Specifies that the given composition character should be inserted at the
current insertion point. An application should display the composition character if
it processes this message.
| CS_NOMOVECARET
| Specifies that the application must not move the caret position as a result of
processing the message. For example, if an IME specifies a combination of
CS_INSERTCHAR and CS_NOMOVECARET, the application should insert the given character
at the current caret position but should not move caret to the next position.
A subsequent WM_IME_COMPOSITION message with GCS_RESULTSTR will replace this
character.
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If the application has created an IME window, it should pass this message to
that window. The DefWindowProc function processes this message by passing it to the default IME window.The
IME window processes this message by updating its appearance based on the change
flag given. An application can call ImmGetCompositionString to retrieve the new composition status.
If none of the GCS_ values are set, the message indicates that the current
composition has been canceled and applications that draw the composition string
should delete the string.
See Also
DefWindowProc, ImmGetCompositionString
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