IsCharAlphaNumeric

The IsCharAlphaNumeric function determines whether a character is either an alphabetic or a numeric character. This determination is based on the semantics of the language selected by the user during setup or by using Control Panel.

BOOL IsCharAlphaNumeric(
  TCHAR ch   // character to test
);
 

Parameters

ch

Specifies the character to be tested.

Return Values

If the character is alphanumeric, the return value is nonzero.

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

Remarks

Windows CE: Windows CE supports only the Unicode version of this function.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.
  Import Library: Use user32.lib.
  Unicode: Implemented as Unicode and ANSI versions on Windows NT.

See Also

String Manipulation Overview, String Manipulation Functions, IsCharAlpha