COMPOSITIONSTR (Windows CE 5.0)
This structure contains composition information. During conversion, the IME puts conversion information into this structure.
typedef struct tagCOMPOSITIONSTR {DWORDdwSize;DWORDdwCompReadAttrLen;DWORDdwCompReadAttrOffset;DWORDdwCompReadClsLen;DWORDdwCompReadClsOffset;DWORDdwCompReadStrLen;DWORDdwCompReadStrOffset;DWORDdwCompAttrLen;DWORDdwCompAttrOffset;DWORDdwCompClsLen;DWORDdwCompClsOffset;DWORDdwCompStrLen;DWORDdwCompStrOffset;DWORDdwCursorPos;DWORDdwDeltaStart;DWORDdwResultReadClsLen;DWORDdwResultReadClsOffset;DWORDdwResultReadStrLen;DWORDdwResultReadStrOffset;DWORDdwResultClsLen;DWORDdwResultClsOffset;DWORDdwResultStrLen;DWORDdwResultStrOffset;DWORDdwPrivateSize;DWORDdwPrivateOffset;}COMPOSITIONSTR;
Members
- dwSize
Size, in bytes, of this structure. - dwCompReadAttrLen
Length of the attribute information of the reading string of the composition string. - dwCompReadAttrOffset
Offset from the beginning of this structure to the attribute information. - dwCompReadClsLen
Length of the clause information of the reading string of the composition string. - dwCompReadClsOffset
Offset from the beginning of this structure to the clause information. - dwCompReadStrLen
Length of the reading string of the composition string. - dwCompReadStrOffset
Offset from the beginning of this structure to the reading string of the composition string. - dwCompAttrLen
Length of the attribute information of the composition string. - dwCompAttrOffset
Offset from the beginning of this structure to the attribute information. - dwCompClsLen
Length of the clause information of the composition string. - dwCompClsOffset
Offset from the beginning of this structure to the clause information. - dwCompStrLen
Length of the composition string. - dwCompStrOffset
Offset from the beginning of this structure to the composition string. - dwCursorPos
Cursor position in the composition string. - dwDeltaStart
Start position of a change in the composition string. If the composition string has changed from the previous state, the first position of such a change is stored here. - dwResultReadClsLen
Length of the clause information of the reading string of the result string. - dwResultReadClsOffset
Offset from the beginning of this structure to the clause information of the reading string of the result string. - dwResultReadStrLen
Length of the reading string of the result string. - dwResultReadStrOffset
Offset from the beginning of this structure to the reading string of the result string. - dwResultClsLen
Length of the clause information of the result string. - dwResultClsOffset
Offset from the beginning of this structure to the clause information of the result string. - dwResultStrLen
Length of the result string. - dwResultStrOffset
Offset from the beginning of this structure to the result string. - dwPrivateSize
Private area in this memory block. - dwPrivateOffset
Offset from the beginning of this structure to the private area.
Remarks
The attribute information is a single-byte array and specifies the attributes of the string. The following table shows the contents of the array.
| Value | Description |
|---|---|
| ATTR_xxxxxxxxxxxx | Specifies the status of the composition string. |
| ATTR_INPUT | Character currently being entered. |
| ATTR_TARGET_CONVERTED | Character currently being converted (already converted). |
| ATTR_CONVERTED | Character given from conversion. |
| ATTR_TARGET_NOTCONVERTED | Character currently being converted (yet to be converted). |
| ATTR_INPUT_ERROR | The character is an error character and cannot be converted by the IME. |
| Other than the preceding: | Reserved. |
The following table shows descriptions of the content.
| Value | Description |
|---|---|
| Character currently being entered: | The character the user is entering. In Japanese, this character is a hiragana, katakana, or alphanumeric, which is yet to be converted by the IME. |
| Character currently being converted (already converted): | The character that has been selected for conversion by the user and converted by the IME. |
| Character given from conversion: | The character to which the IME has converted. |
| Character currently being converted (yet to be converted): | The character that has been selected for conversion by the user and not yet converted by the IME. In Japanese, this character is a hiragana, katakana, or alphanumeric, which the user has entered. |
| Character is an error character and cannot be converted by the IME: | The character is an error character, the IME cannot convert this character. For example, some consonants cannot be put together. |
The length of the attribute information is the same as the length of the string. Each byte corresponds to each byte of the string. Even if the string includes DBCS characters, the attribute information has the information bytes of both the lead byte and the second byte.
The clause information is a DWORD array and specifies the numbers that are the positions of the clause. The position of the clause is one of the positions of the composition string and this clause starts from this position. At a minimum, the length of this information is two DWORDs. This means the length of the clause information is eight bytes. The first DWORD has to be zero. This is the starting position of the first clause. The last DWORD has to be the length of this string. For example, if the string has three clauses, the clause information has four DWORDs. The first DWORD is zero. The second DWORD specifies the starting position of the second clause. The third DWORD specifies the starting position of the third clause. The last DWORD is the length of this string.
The dwCursorPos member specifies the character in the composition string where the cursor is located, in terms of the count of that character. The counting starts at zero. If the cursor is to be positioned immediately after the composition string, this value is equal to the length of the composition string. In case there is no cursor (if such a condition exists), a value -1 is specified here. If a composition string does not exist, this member is invalid.
Requirements
OS Versions: Windows CE .NET 4.0 and later.
Header: Imm.h.
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