\membersection{wxMBConv::FromWChar}\label{wxmbconvfromwchar}
-\constfunc{virtual size\_t}{FromWChar}{\param{wchar\_t *}{dst}, \param{size\_t }{dstLen}, \param{const char *}{src}, \param{size\_t }{srcLen = $-1$}}
+\constfunc{virtual size\_t}{FromWChar}{\param{wchar\_t *}{dst}, \param{size\_t }{dstLen}, \param{const char *}{src}, \param{size\_t }{srcLen = wxNO\_LEN}}
The most general function for converting a multibyte string to a wide string.
-The main case is when \arg{dst} is not \NULL and \arg{srcLen} is not $-1$: then
+The main case is when \arg{dst} is not \NULL and \arg{srcLen} is not
+\texttt{wxNO\_LEN} (which is defined as \texttt{(size\_t)$-1$}): then
the function converts exactly \arg{srcLen} bytes starting at \arg{src} into
wide string which it output to \arg{dst}. If the length of the resulting wide
string is greater than \arg{dstLen}, an error is returned. Note that if
\arg{srcLen} bytes don't include \NUL characters, the resulting wide string is
not \NUL-terminated neither.
-If \arg{srcLen} is $-1$, the function supposes that the string is properly
-(i.e. as necessary for the encoding handled by this conversion) \NUL-terminated
-and converts the entire string, including any trailing \NUL bytes. In this case
-the wide string is also \NUL-terminated.
+If \arg{srcLen} is \texttt{wxNO\_LEN}, the function supposes that the string is
+properly (i.e. as necessary for the encoding handled by this conversion)
+\NUL-terminated and converts the entire string, including any trailing \NUL
+bytes. In this case the wide string is also \NUL-terminated.
Finally, if \arg{dst} is \NULL, the function returns the length of the needed
buffer.
This function returns $1$ for most of the multibyte encodings in which the
string is terminated by a single \NUL, $2$ for UTF-16 and $4$ for UTF-32 for
which the string is terminated with $2$ and $4$ \NUL characters respectively.
-The other cases are not currently supported and $-1$ is returned for them.
+The other cases are not currently supported and \texttt{wxCONV\_FAILED}
+(defined as $-1$) is returned for them.
\membersection{wxMBConv::ToWChar}\label{wxmbconvtowchar}
-\constfunc{virtual size\_t}{ToWChar}{\param{char\_t *}{dst}, \param{size\_t }{dstLen}, \param{const wchar\_t *}{src}, \param{size\_t }{srcLen = $-1$}}
+\constfunc{virtual size\_t}{ToWChar}{\param{char\_t *}{dst}, \param{size\_t }{dstLen}, \param{const wchar\_t *}{src}, \param{size\_t }{srcLen = wxNO\_LEN}}
This function has the same semantics as \helpref{FromWChar}{wxmbconvfromwchar}
except that it converts a wide string to multibyte one.