CharUpper function

Converts a character string or a single character to uppercase. If the operand is a character string, the function converts the characters in place.

Syntax

LPTSTR WINAPI CharUpper(
  _Inout_ LPTSTR lpsz
);

Parameters

lpsz [in, out]

Type: LPTSTR

A null-terminated string, or a single character. If the high-order word of this parameter is zero, the low-order word must contain a single character to be converted.

Return value

Type: LPTSTR

If the operand is a character string, the function returns a pointer to the converted string. Because the string is converted in place, the return value is equal to lpsz.

If the operand is a single character, the return value is a 32-bit value whose high-order word is zero, and low-order word contains the converted character.

There is no indication of success or failure. Failure is rare. There is no extended error information for this function; do not call GetLastError.

Remarks

Note that CharUpper always maps lowercase I ("i") to uppercase I, even when the current language is Turkish or Azerbaijani. If you need a function that is linguistically sensitive in this respect, call LCMapString.

Conversion to Unicode in the ANSI version of the function is done with the system default locale in all cases.

Requirements

See also

Reference

CharLower

CharLowerBuff

CharUpperBuff

Conceptual

Strings