INFO: SetupComm Only Takes Even Number Bytes Buffer Size in NT

 Last reviewed: February 5, 1997
Article ID: Q163132
The information in this article applies to:
  • Microsoft Win32 Application Programming Interface (API) included with: - Microsoft Windows NT versions 3.51, 4.0 - Microsoft Windows 95

SUMMARY

In Windows NT, the size of the input and output buffers for the SetupComm() function must be specified in even numbers of bytes. The API returns error 13 (ERROR_INVALID_DATA) if this condition is not met. This applies to both Windows NT versions 3.51 and 4.0.

In Windows 95, there are no problems associated with the use of odd numbers.

KBCategory: kbprg
KBSubcategory: BseCommapi
Additional reference words: 3.51 4.00



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Last reviewed: February 5, 1997
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