CharUpperBuffA function (winuser.h)
Converts lowercase characters in a buffer to uppercase characters. The function converts the characters in place.
Syntax
DWORD CharUpperBuffA(
[in, out] LPSTR lpsz,
[in] DWORD cchLength
);
Parameters
[in, out] lpsz
Type: LPTSTR
A buffer containing one or more characters to be processed.
[in] cchLength
Type: DWORD
The size, in characters, of the buffer pointed to by lpsz.
The function examines each character, and converts lowercase characters to uppercase characters. The function examines the number of characters indicated by cchLength, even if one or more characters are null characters.
Return value
Type: DWORD
The return value is the number of characters processed.
For example, if CharUpperBuff("Zenith of API Sets", 10) succeeds, the return value is 10.
Remarks
Note that CharUpperBuff 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.
Examples
For an example, see Creating and Using a Temporary File.
Note
The winuser.h header defines CharUpperBuff as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows 2000 Professional [desktop apps only] |
Minimum supported server | Windows 2000 Server [desktop apps only] |
Target Platform | Windows |
Header | winuser.h (include Windows.h) |
Library | User32.lib |
DLL | User32.dll |
See also
Conceptual
Reference