Converts lowercase characters in a buffer to uppercase characters. The function converts the characters in place.
DWORD CharUpperBuffA( LPSTR lpsz, DWORD cchLength );
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 lowercase characters to uppercase 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 CharUpperBuff("Zenith of API Sets", 10) succeeds, the return value is 10.
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.
For an example, see Creating and Using a Temporary File.
|Minimum supported client||Windows 2000 Professional [desktop apps only]|
|Minimum supported server||Windows 2000 Server [desktop apps only]|
|Header||winuser.h (include Windows.h)|