This function is called by an application to specify which alphabet code (ALC) values the handwriting recognition engine returns first.
At a Glance
| Header file: | Recog.h |
| Windows CE versions: | 2.0 and later |
Syntax
BOOL HwxALCPriority ( HRC hrc, ALC alc);
Parameters
hrc
[in] Handle to the handwriting recognition context (HRC) object.
alc
[in] Alphabet code (ALC) value that describes the character groupings used by the recognizer to prioritize the results of the recognition analysis. It can be one or more of the following values:
| Value | Description |
| ALC_WHITE | Used for a blank or white space. |
| ALC_LCALPHA | Used for the lowercase alphabet, a through z. |
| ALC_UCALPHA | Used for the uppercase alphabet, A through Z. |
| ALC_NUMERIC | Used for the digits 0 through 9. |
| ALC_PUNC | Used for the set of standard punctuation. It is language-dependent. |
| ALC_NUMERIC_PUNC | Used for all non-digit characters in numbers, such as the period and the comma. |
| ALC_MATH | Used for a set of math symbols, such as %, ^, *, (), –, +, {}, <, and /. |
| ALC_MONETARY | Used for punctuation that appears in local monetary expressions. |
| ALC_COMMON_SYMBOLS | Signifies commonly used symbols from ALC_PUNC, ALC_NUMERIC_PUNC, ALC_MATH, and ALC_MONETARY. |
| ALC_OTHER | Signifies other punctuation that is not typically used. |
| ALC_ASCII | Used for the 7-bit ASCII characters—20 through 7F. |
| ALC_HIRAGANA | Used for Hiragana characters. |
| ALC_KATAKANA | Used for Katakana characters. |
| ALC_KANJI_COMMON | Used for the most commonly used Kanji characters. |
| ALC_KANJI_RARE | Used for the remaining Kanji characters. |
| ALC_HANGUL_COMMON | Signifies the commonly used Hangul characters used in Korea. |
| ALC_HANGUL_RARE | Signifies the remaining Hangul characters used in Korea. |
| ALC_OEM | Specific to recognizers created by OEMs. |
ALC groupings created by combining two or more related ALC basic values are described in the following table.
| ALC groupings | Basic ALC values |
| ALC_ALPHA | ALC_LCALPHA | ALC_UCALPHA |
| ALC_ALPHANUMERIC | ALC_ALPHA | ALC_NUMERIC |
| ALC_KANA | ALC_HIRAGANA | ALC_KATAKANA |
| ALC_KANJI_ALL | ALC_KANJI_COMMON | ALC_KANJI_RARE |
| ALC_HANGUL_ALL | ALC_HANGUL_COMMON | ALC_HANGUL_RARE |
| ALC_EXTENDED_SYM | ALC_MATH | ALC_MONETARY | ALC_OTHER |
| ALC_SYS_MINIMUM | ALC_ALPHANUMERIC | ALC_PUNC | ALC_WHITE |
| ALC_SYS_DEFAULT | ALC_SYS_MINIMUM | ALC_COMMON_SYMBOLS |
These groupings can be combined with each other or with the basic values for various languages, as described in the following table.
| Language ALC groupings | ALC groupings |
| ALC_USA_COMMON | ALC_SYS_DEFAULT |
| ALC_USA_EXTENDED | ALC_USA_COMMON | ALC_EXTENDED_SYM |
| ALC_JPN_COMMON | ALC_SYS_DEFAULT | ALC_KANA | ALC_KANJI_COMMON |
| ALC_JPN_EXTENDED | ALC_JPN_COMMON | ALC_EXTENDED_SYM | ALC_KANJI_RARE |
| ALC_CHS_COMMON | ALC_SYS_DEFAULT | ALC_KANJI_COMMON |
| ALC_CHS_EXTENDED | ALC_CHS_COMMON | ALC_EXTENDED_SYM | ALC_KANJI_RARE |
| ALC_CHT_COMMON | ALC_SYS_DEFAULT | ALC_KANJI_COMMON |
| ALC_CHT_EXTENDED | ALC_CHT_COMMON | ALC_EXTENDED_SYM | ALC_KANJI_RARE |
| ALC_KOR_COMMON | ALC_SYS_DEFAULT | ALC_HANGUL_COMMON | ALC_KANJI_COMMON |
| ALC_KOR_EXTENDED | ALC_KOR_COMMON | ALC_EXTENDED_SYM | ALC_HANGUL_RARE | ALC_KANJI_RARE |
Return Values
TRUE indicates success. FALSE indicates failure. To get extended error information, call GetLastError.
Remarks
The handwriting recognition engine matches user-drawn characters, or ink, to characters contained in ALCs. The engine then returns these possible matches in a list ordered from most likely match to least likely match. When the HwxALCValid function specifies multiple ALCs, an application can use HwxALCPriority to indicate which ALC has priority in the list of possible matches. For example, specifying ALC_SYS_MINIMUM with a call to HwxALCValid means that the handwriting recognition engine uses three ALCs: ALC_ALPHANUMERIC, ALC_PUNC, and ALC_WHITE. If a user draws a lowercase “j” and a call to HwxPriority gives ALC_ALPHANUMERIC priority, “j” is likely to returned as the best possible match. But, if ALC_PUNC—punctuation symbols—has priority, the semi-colon might be listed before “j” in the list of possible matches.
See Also