How Automation Compares Strings

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This appendix describes how Automation compares strings. These comparisons are important when creating applications that support national language accents and digraphs. The information in this appendix applies to the following:

When comparing strings, Automation components use the following rules:

  • Comparisons are sensitive to locale, based on the string's locale identifier (LCID). A string must have an LCID that is supported by the application or type library. For more information about locales and LCIDs, see Locales and Language Identifier Constants and Strings.

  • Accent characters are ignored. For example, the "á" string compares the same as "a".

  • Case is ignored. For example, the string "A" compares the same as "a".

  • Comparisons are sensitive to digraphs. For example, the "Æ" string is not the same as "AE".

  • For Japanese, Korean, and Chinese locales, ITypeLib::FindName and IDispatch::GetIDsOfNames ignore width and kanatype.

Appendices

Automation Programming Reference