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Is Alpha Function
Character Types Class

Public Function IsAlpha( _
    ByVal vCharCode As Integer _
    ) As Boolean

"Is Character Alphabetic"
Return True if the character with ASCII value vCharCode is alphabetic ("A".."Z", "a".."z"; includes accented characters such as C-circumflex within the definitions for the ANSI Windows character set).
Function returns False otherwise.

Examples: 
    IsAlpha(Asc("A")) = True
    IsAlpha(Asc("5")) = False
    IsAlpha(Asc("#")) = False
See also: 
    IsAlNum Function
    IsLower Function
    IsUpper Function
    CharTypeAlpha Property
vCharCode: Character whose ASCII value is checked to determine if it belongs to the alphabetic class.
Note: Function will generate a runtime error if vCharCode is not between 0 (zero) and 255 inclusive.

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