GetStringTypeW (Windows CE 5.0)
This function returns character-type information for the characters in the specified source string. For each character in the string, the function sets one or more bits in the corresponding 16-bit element of the output array. Each bit identifies a given character type, such as whether the character is a letter, a digit, or neither.
BOOL GetStringTypeW( DWORD dwInfoType, LPCWSTR lpSrcStr, int cchSrc, LPWORD lpCharType );
- [in] Value that specifies the type of character information the user wants to retrieve. The various types are divided into different levels (see the following Remarks section for a list of the information included in each type). This parameter can specify one of the following character type flags. The following table shows the values this parameter can take.
Value Description CT_CTYPE1 Retrieve character type information. CT_CTYPE2 Retrieve bidirectional layout information. CT_CTYPE3 Retrieve text processing information.
- [in] Pointer to the string for which character types are requested. If cchSrc is –1, the string is assumed to be null terminated. This must be a Unicode string.
- [in] Size, in characters, of the string pointed to by the lpSrcStr parameter. If this count includes a terminating null character, the function returns character type information for the terminating null character. If this value is –1, the string is assumed to be null terminated and the length is calculated automatically.
- [out] Pointer to an array of 16-bit values. The length of this array must be large enough to receive one 16-bit value for the number of characters specified in the cchSrc parameter. When the function returns, this array contains one word corresponding to each Unicode character in the source string.
Nonzero indicates success. Zero indicates failure. To get extended error information, call the GetLastError function. Possible values for GetLastError include the following:
The GetStringTypeW function is designed for Unicode strings only.
The lpSrcStr and lpCharType pointers must not be the same. If they are the same, the function fails and GetLastError returns ERROR_INVALID_PARAMETER.
The character-type bits are divided into several levels. The information for one level can be retrieved by a single call to this function. Each level is limited to 16 bits of information so that the other mapping routines, which are limited to 16 bits of representation per character, can also return character-type information.
The character types supported by this function include the following.
- Ctype 1
- These types support ANSI C and POSIX (LC_CTYPE) character-typing functions. A combination of these values is returned in the array pointed to by the lpCharType parameter when the dwInfoType parameter is set to CT_CTYPE1.
Name Value Description C1_UPPER 0x0001 Uppercase C1_LOWER 0x0002 Lowercase C1_DIGIT 0x0004 Decimal digits C1_SPACE 0x0008 Space characters C1_PUNCT 0x0010 Punctuation C1_CNTRL 0x0020 Control characters C1_BLANK 0x0040 Blank characters C1_XDIGIT 0x0080 Hexadecimal digits C1_ALPHA 0x0100 Any linguistic character: alphabetic, syllabary, or ideographic
The following character types are either constant or computable from basic types and do not need to be supported by this function.
Type Description Alphanumeric Alphabetic characters and digits (C1_ALPHA and C1_DIGIT) Printable Graphic characters and blanks (all C1_* types except C1_CNTRL)
- Ctype 2
- These types support proper layout of Unicode text. The direction attributes are assigned so that the bidirectional layout algorithm standardized by Unicode produces accurate results. These types are mutually exclusive. For more information about the use of these attributes, see The Unicode Standard: Worldwide Character Encoding, Volumes 1 and 2, Addison Wesley Publishing Company: 1991, 1992, ISBN 0201567881.
Name Value Description Strong C2_LEFTTORIGHT 0x0001 Left to right C2_RIGHTTOLEFT 0x0002 Right to left Weak C2_EUROPENUMBER 0x0003 European number, European digit C2_EUROPESEPARATOR 0x0004 European numeric separator C2_EUROPETERMINATOR 0x0005 European numeric terminator C2_ARABICNUMBER 0x0006 Arabic number C2_COMMONSEPARATOR 0x0007 Common numeric separator Neutral C2_BLOCKSEPARATOR 0x0008 Block separator C2_SEGMENTSEPARATOR 0x0009 Segment separator C2_WHITESPACE 0x000A White space C2_OTHERNEUTRAL 0x000B Other neutrals Not applicable C2_NOTAPPLICABLE 0x0000 No implicit directionality (for example, control codes)
- Ctype 3
- These types are intended to be placeholders for extensions to the POSIX types required for general text processing or for the standard C library functions. A combination of these values is returned when dwInfoType is set to CT_CTYPE3.
Name Value Description C3_NONSPACING 0x0001 Nonspacing mark C3_DIACRITIC 0x0002 Diacritic nonspacing mark C3_VOWELMARK 0x0004 Vowel nonspacing mark C3_SYMBOL 0x0008 Symbol C3_KATAKANA 0x0010 Katakana character C3_HIRAGANA 0x0020 Hiragana character C3_HALFWIDTH 0x0040 Half-width character C3_FULLWIDTH 0x0080 Full-width character C3_IDEOGRAPH 0x0100 Ideographic character C3_KASHIDA 0x0200 Arabic Kashida character C3_LEXICAL 0x0400 Punctuation which is counted as part of the word (Kashida, hyphen, feminine/masculine ordinal indicators, equal sign, and so forth) C3_ALPHA 0x8000 All linguistic characters (alphabetic, syllabary, and ideographic) Not applicable C3_NOTAPPLICABLE 0x0000 Not applicable
OS Versions: Windows CE 1.0 and later.
Link Library: Coredll.lib.
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