PRB: IsCharAlpha Return Value Different Between Versions

 Last reviewed: November 2, 1995
Article ID: Q84843
The information in this article applies to:
  • Microsoft Windows Software Development Kit (SDK) versions 3.1
  • Microsoft Win32 Application Programming Interface (API) included with: 

        - Microsoft Windows NT versions 3.5 and 3.51
    - Microsoft Windows 95 version 4.0

SYMPTOMS

Under Windows version 3.1, the IsCharAlpha function returns TRUE for the character values 8Ah, 8Ch, 9Ah, 9Ch, 9Fh, and DFh. Under Windows version 3.0, the function returns FALSE for these character values.

CAUSE

These characters represent alphabetic characters that were added to the Windows character set in Windows 3.1.

RESOLUTION

Applications that use the IsCharAlpha function should behave properly with the newly-defined characters. No changes should be required.

MORE INFORMATION

Appendix C.1, page 596, of the "Microsoft Windows Software Development Kit: Programmer's Reference, Volume 3: Messages, Structures, and Macros" lists the Windows character set.

Additional reference words: 3.00 3.10 3.50 3.51 4.00 95
KBCategory: kbui kbprb
KBSubcategory: UsrLoc

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Last reviewed: November 2, 1995
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