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Enabling Asian Line Breaking

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When platform developers include the MGFE component in your OS image, the DrawText function applies Asian line breaking rules to the range of Unicode Asian characters. Windows CE provides default rules for Kinsoku, double-byte character set (DBCS), half-width Katakana, and ASCII English characters. A string will not break on one of these characters.

In effect, Windows CE uses the following registry settings to control line breaking:

[HKEY_LOCAL_MACHINE\SYSTEM\GDI]
    "DONTBEGIN"=",.?!)]}>\x3001\x3002\xff0c\xff0e\xff64\xff61\xff1f\xff01\xff09\xff3d\xff5d\xff1e\x309c\xff9f\x309b\xff9e\x300d\xff63\x3015\x300b\x300f\x3011\x30fc\xff70"
    "DONTEND"="([{<\xff08\xff3b\xff5b\xff1c\x300c\xff62\x3014\x300a\x300e\x3010"
    "EDBCS"="\x0001\x007f\xff61\xff9f"

If you want to use a different type of line breaking, you can override the settings in the Project.reg registry file. The following examples show how to modify line breaking.

[HKEY_LOCAL_MACHINE\SYSTEM\GDI]
    "DONTBEGIN"="one_or_more_characters"
    "DONTEND"="one_or_more_characters"
    "EDBCS"="\start_character\end_character"

Replace the one_or_more_characters variable with a list of one or more characters that should not be placed at the beginning of a line of text, for the DONTBEGIN entry, or at the end of a line of text, for the DONTEND entry. To specify the DBCS characters, use the format shown in the first example in this section.

You must express the start_character and end_character values in hexadecimal. These values specify the start and end characters of a continuous range of Unicode characters. Line breaking will not occur for any character within the specified range. You can specify one or more ranges of values.

See Also

DrawText | Creating End User Defined Characters

Last updated on Wednesday, April 13, 2005

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