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IsDBCSLeadByte info  Overview  Group

The IsDBCSLeadByte function determines whether a character is a lead byte ¾ that is, the first byte of a character in a double-byte character set (DBCS).


    BYTE TestChar 

// character to test



Specifies the character to be tested.

Return Values

If the character is a lead byte, the return value is nonzero.

If the character is not a lead byte, the return value is zero. To get extended error information, call GetLastError.


Lead bytes are unique to double-byte character sets. A lead byte introduces a double-byte character. Lead bytes occupy a specific range of byte values. The IsDBCSLeadByte function uses the ANSI code page to check lead-byte ranges.

See Also


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