CharLowerBuffA function (winuser.h)
Converts uppercase characters in a buffer to lowercase characters. The function converts the characters in place.
DWORD CharLowerBuffA( [in, out] LPSTR lpsz, [in] DWORD cchLength );
[in, out] lpsz
A buffer containing one or more characters to be processed.
The size, in characters, of the buffer pointed to by lpsz. The function examines each character, and converts uppercase characters to lowercase characters. The function examines the number of characters indicated by cchLength, even if one or more characters are null characters.
The return value is the number of characters processed. For example, if CharLowerBuff("Acme of Operating Systems", 10) succeeds, the return value is 10.
Note that CharLowerBuff always maps uppercase I to lowercase I ("i"), even when the current language is Turkish or Azerbaijani. If you need a function that is linguistically sensitive in this respect, call LCMapSting.
Conversion to Unicode in the ANSI version of the function is done with the system default locale in all cases.
For an example, see "Creating a Spell Dialog Box" in Using Combo Boxes.
The winuser.h header defines CharLowerBuff as an alias which 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 not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
|Minimum supported client||Windows 2000 Professional [desktop apps only]|
|Minimum supported server||Windows 2000 Server [desktop apps only]|
|Header||winuser.h (include Windows.h)|