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printf和wprintf 的高级用法

此次连续2天更新WEB.弥补前次10天没有更新. 大家还是要多多捧场啊.
本文描述了NTDLL.DLL和NTOSKRNL.EXE里的printf() and wprintf()非标准支持.乃MS自己在SMSS.EXE里所用.这里描述了这些UNDOCUMENTED用法.
Hello!
At present I’m working on the printf() and wprintf() functions in ntoskrnl
and ntdll. I only want to notify you about some incompatibilities between
the current implementation and the implementation in WinNT.
M$ added some non-standard format types to the printf() and wprintf()
functions:     type prefixes:         I64 : 64 bit integer (long long, unsigned long long, __int64)         w : unicode charater (only used in “%wc”, “%ws” and “%wZ”)
types:         C : unicode character (in printf()) or single byte character (in wprintf())         S : unicode string (in printf()) or single byte string (in wprintf())         Z : PANSI_STRING (“%Z”) or PUNICODE_STRING (“%wZ”)
The format types ‘c’, ‘C’, ‘s’ and ‘S’ also allow the prefixes ‘h’ and ‘l’:
printf():         %c : single byte character         %hc : single byte character         %lc : unicode character         %wc : unicode character         %C : unicode character         %hC : single byte character         %lC : unicode character         %s : single byte string         %hs : single byte string         %ls : unicode string
%wc : unicode string         %S : unicode string         %hS : single byte string         %lS : unicode string
wprintf():         %c : unicode character         %hc : single byte character         %lc : unicode character         %wc : unicode character         %C : single byte character         %hC : single byte character         %lC : unicode character         %s : unicode string
%hs : single byte string         %ls : unicode string
%ws : unicode string         %S : single byte string         %hS : single byte string         %lS : unicode string
AFAIK, printf() and wprintf() functions in crtdll don’t support the ‘%Z’ and
‘%wZ’ formats.
Hint: Have a look at WinNT ntoskrnl.exe or smss.exe and search for ‘%Z’ or
‘%wZ’. It’s used there.
Bye, Eric Kohl

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