- 1 year ago
Is StringCbPrintf (strsafe.h) part of the WinAPI?
Yes, StringCbPrintf
is part of the Windows API, specifically the "StrSafe" (String Safety) library. The StrSafe library is designed to provide safer string handling functions that help prevent buffer overflows and related security vulnerabilities.
StringCbPrintf
is a string formatting function similar to sprintf
, but with additional safety checks to ensure that the output buffer is not overrun. It takes a buffer, its size, and a format string, and writes the formatted string to the buffer. If the output buffer is not large enough to accommodate the entire formatted string, StringCbPrintf
will not write beyond the buffer's boundary, thereby avoiding buffer overflows.
Here is the function signature of StringCbPrintf
:
cSTRSAFEAPI StringCbPrintfA(
_Out_writes_bytes_(cbDest) STRSAFE_LPSTR pszDest,
_In_ size_t cbDest,
_In_ _Printf_format_string_ STRSAFE_LPCSTR pszFormat,
...
);
STRSAFEAPI StringCbPrintfW(
_Out_writes_bytes_(cbDest) STRSAFE_LPWSTR pszDest,
_In_ size_t cbDest,
_In_ _Printf_format_string_ STRSAFE_LPCWSTR pszFormat,
...
);
The STRSAFE_LPSTR
and STRSAFE_LPWSTR
are typedefs for char*
and wchar_t*
respectively.
Note that StringCbPrintf
is only available on Windows platforms that support the StrSafe library, which is typically Windows XP and later versions.
If you are using Visual C++ and targeting Windows platforms, you can include strsafe.h
to use the StringCbPrintf
function and other safer string functions provided by the StrSafe library. Remember to link against the appropriate library to use the StrSafe functions in your application.