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HwxALCPriority

  • Article

This function is called by an application to specify which alphabet code (ALC) values the handwriting recognition engine returns first.

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. The following table shows the values this parameter takes.

    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 the GetLastError function.

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 HwxALCPriority gives ALC_ALPHANUMERIC priority, "j" is likely to return as the best possible match. However, if ALC_PUNC — punctuation symbols — has priority, the semi-colon might be listed before "j" in the list of possible matches.

Requirements

OS Versions: Windows CE .NET 4.0 and later.
Header: Recog.h.
Link Library: Hwxjpn.lib, Hwxusa.lib, Hwxcht.lib, Hwxkor.lib.

See Also

HwxALCValid

 Last updated on Friday, April 09, 2004

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