X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6d9d6350fdc1ee61c65c00b6d219759ad480478b..550d433e523dc462c62a2346c0fd713a1d5705e8:/docs/latex/wx/wxstring.tex

diff --git a/docs/latex/wx/wxstring.tex b/docs/latex/wx/wxstring.tex
index 6ff8f7b050..85529acf02 100644
--- a/docs/latex/wx/wxstring.tex
+++ b/docs/latex/wx/wxstring.tex
@@ -13,9 +13,14 @@ thing like, for example, \helpref{Length()}{wxstringlength},
 \helpref{Len()}{wxstringlen} and {\tt length()} which all return the string
 length. In all cases of such duplication the {\tt std::string}-compatible
 method ({\tt length()} in this case, always the lowercase version) should be
-used as it will ensure smoother transition to {\tt std::string} when wxWindows
+used as it will ensure smoother transition to {\tt std::string} when wxWidgets
 starts using it instead of wxString.
 
+Also please note that in this manual \texttt{char} is sometimes used instead of 
+\texttt{wxChar} because it hasn't been fully updated yet. Please substitute as
+necessary and refer to the sources in case of a doubt.
+
+
 \wxheading{Derived from}
 
 None
@@ -36,7 +41,7 @@ Objects:
 
 \latexignore{\rtfignore{\wxheading{Function groups}}}
 
-\membersection{Constructors and assignment operators}
+\membersection{Constructors and assignment operators}\label{constructorsinwxstring}
 
 A string may be constructed either from a C string, (some number of copies of)
 a single character or a wide (UNICODE) string. For all constructors (except the
@@ -47,7 +52,7 @@ operator.
 \helpref{operator $=$}{wxstringoperatorassign}\\
 \helpref{\destruct{wxString}}{wxstringdestruct}
 
-\membersection{String length}
+\membersection{String length}\label{lengthfunctionsinwxstring}
 
 These functions return the string length and check whether the string is empty
 or empty it.
@@ -58,7 +63,7 @@ or empty it.
 \helpref{Empty}{wxstringempty}\\
 \helpref{Clear}{wxstringclear}
 
-\membersection{Character access}
+\membersection{Character access}\label{characteraccessinwxstring}
 
 Many functions in this section take a character index in the string. As with C
 strings and/or arrays, the indices start from $0$, so the first character of a
@@ -79,9 +84,12 @@ use it.
 \helpref{Last}{wxstringlast}\\
 \helpref{operator []}{wxstringoperatorbracket}\\
 \helpref{c\_str}{wxstringcstr}\\
+\helpref{mb\_str}{wxstringmbstr}\\
+\helpref{wc\_str}{wxstringwcstr}\\
+\helpref{fn\_str}{wxstringfnstr}\\
 \helpref{operator const char*}{wxstringoperatorconstcharpt}
 
-\membersection{Concatenation}
+\membersection{Concatenation}\label{concatenationinwxstring}
 
 Anything may be concatenated (appended to) with a string. However, you can't
 append something to a C string (including literal constants), so to do this it
@@ -93,7 +101,7 @@ should be converted to a wxString first.
 \helpref{Append}{wxstringappend}\\
 \helpref{Prepend}{wxstringprepend}
 
-\membersection{Comparison}
+\membersection{Comparison}\label{comparisoninwxstring}
 
 The default comparison function \helpref{Cmp}{wxstringcmp} is case-sensitive and
 so is the default version of \helpref{IsSameAs}{wxstringissameas}. For case
@@ -116,9 +124,10 @@ length of the prefix then.
 \helpref{CmpNoCase}{wxstringcmpnocase}\\
 \helpref{IsSameAs}{wxstringissameas}\\
 \helpref{Matches}{wxstringmatches}\\
-\helpref{StartsWith}{wxstringstartswith}
+\helpref{StartsWith}{wxstringstartswith}\\
+\helpref{EndsWith}{wxstringendswith}
 
-\membersection{Substring extraction}
+\membersection{Substring extraction}\label{substringextractioninwxstring}
 
 These functions allow to extract substring from this string. All of them don't
 modify the original string and return a new string containing the extracted
@@ -132,9 +141,11 @@ substring.
 \helpref{BeforeLast}{wxstringbeforelast}\\
 \helpref{AfterFirst}{wxstringafterfirst}\\
 \helpref{AfterLast}{wxstringafterlast}\\
-\helpref{StartsWith}{wxstringstartswith}
+\helpref{StartsWith}{wxstringstartswith}\\
+\helpref{EndsWith}{wxstringendswith}
 
-\membersection{Case conversion}
+
+\membersection{Case conversion}\label{caseconversioninwxstring}
 
 The MakeXXX() variants modify the string in place, while the other functions
 return a new string which contains the original text converted to the upper or
@@ -145,7 +156,7 @@ lower case and leave the original string unchanged.
 \helpref{MakeLower}{wxstringmakelower}\\
 \helpref{Lower}{wxstringlower}
 
-\membersection{Searching and replacing}
+\membersection{Searching and replacing}\label{searchingandreplacinginwxstring}
 
 These functions replace the standard {\it strchr()} and {\it strstr()} 
 functions.
@@ -153,7 +164,7 @@ functions.
 \helpref{Find}{wxstringfind}\\
 \helpref{Replace}{wxstringreplace}
 
-\membersection{Conversion to numbers}
+\membersection{Conversion to numbers}\label{conversiontonumbersinwxstring}
 
 The string provides functions for conversion to signed and unsigned integer and
 floating point numbers. All three functions take a pointer to the variable to
@@ -164,7 +175,7 @@ converted to a number.
 \helpref{ToULong}{wxstringtoulong}\\
 \helpref{ToDouble}{wxstringtodouble}
 
-\membersection{Writing values into the string}
+\membersection{Writing values into the string}\label{writingintostringinwxstring}
 
 Both formatted versions (\helpref{Printf}{wxstringprintf}) and stream-like
 insertion operators exist (for basic types only). Additionally, the 
@@ -187,7 +198,7 @@ formatted value to a string:
 \helpref{PrintfV}{wxstringprintfv}\\
 \helpref{operator \cinsert}{wxstringoperatorout}
 
-\membersection{Memory management}
+\membersection{Memory management}\label{memoryinwxstring}
 
 These are "advanced" functions and they will be needed quite rarely. 
 \helpref{Alloc}{wxstringalloc} and \helpref{Shrink}{wxstringshrink} are only
@@ -203,7 +214,7 @@ must} be called!
 \helpref{GetWriteBuf}{wxstringgetwritebuf}\\
 \helpref{UngetWriteBuf}{wxstringungetwritebuf}
 
-\membersection{Miscellaneous}
+\membersection{Miscellaneous}\label{miscellaneousinwxstring}
 
 Other string functions.
 
@@ -211,9 +222,9 @@ Other string functions.
 \helpref{Pad}{wxstringpad}\\
 \helpref{Truncate}{wxstringtruncate}
 
-\membersection{wxWindows 1.xx compatibility functions}
+\membersection{wxWidgets 1.xx compatibility functions}\label{backwardcompatibilityinwxstring}
 
-These functions are deprecated, please consider using new wxWindows 2.0
+These functions are deprecated, please consider using new wxWidgets 2.0
 functions instead of them (or, even better, std::string compatible variants).
 
 \helpref{SubString}{wxstringsubstring}\\
@@ -397,7 +408,7 @@ their documentation.
 
 \func{}{wxString}{\void}
 
-Default constructor.
+Default constructor. Initializes the string to {\tt ""} (empty string).
 
 \func{}{wxString}{\param{const wxString\&}{ x}}
 
@@ -410,7 +421,7 @@ Constructs a string of {\it n} copies of character {\it ch}.
 \func{}{wxString}{\param{const char*}{ psz}, \param{size\_t}{ nLength = wxSTRING\_MAXLEN}}
 
 Takes first {\it nLength} characters from the C string {\it psz}.
-The default value of wxSTRING\_MAXLEN means to take all the string.
+The default value of {\tt wxSTRING\_MAXLEN} means to take all the string.
 
 Note that this constructor may be used even if {\it psz} points to a buffer
 with binary data (i.e. containing {\tt NUL} characters) as long as you provide
@@ -422,11 +433,36 @@ results otherwise.
 \func{}{wxString}{\param{const unsigned char*}{ psz}, \param{size\_t}{ nLength = wxSTRING\_MAXLEN}}
 
 For compilers using unsigned char: takes first {\it nLength} characters from the C string {\it psz}.
-The default value of wxSTRING\_MAXLEN means take all the string.
+The default value of {\tt wxSTRING\_MAXLEN} means take all the string.
+
+{\bf Note:} In Unicode build, all of the above constructors take
+{\tt wchar\_t} arguments instead of {\tt char}.
+
+\wxheading{Constructors with conversion}
+
+The following constructors allow you to construct wxString from wide string
+in ANSI build or from C string in Unicode build.
+
+\func{}{wxString}{\param{const wchar\_t*}{ psz}, \param{wxMBConv\&}{ conv}, \param{size\_t}{ nLength = wxSTRING\_MAXLEN}}
 
-\func{}{wxString}{\param{const wchar\_t*}{ psz}}
+Initializes the string from first \arg{nLength} characters of wide string. 
+The default value of {\tt wxSTRING\_MAXLEN} means take all the string.
+In ANSI build, \arg{conv}'s 
+\helpref{WC2MB}{wxmbconvwc2mb} method is called to
+convert \arg{psz} to wide string. It is ignored in Unicode build.
 
-Constructs a string from the wide (UNICODE) string.
+\func{}{wxString}{\param{const char*}{ psz}, \param{wxMBConv\&}{ conv}, \param{size\_t}{ nLength = wxSTRING\_MAXLEN}}
+
+Initializes the string from first \arg{nLength} characters of C string.
+The default value of {\tt wxSTRING\_MAXLEN} means take all the string.
+In Unicode build, \arg{conv}'s 
+\helpref{MB2WC}{wxmbconvmb2wc} method is called to
+convert \arg{psz} to wide string. It is ignored in ANSI build.
+
+\wxheading{See also}
+
+\helpref{wxMBConv classes}{mbconvclasses}, \helpref{mb\_str}{wxstringmbstr},
+\helpref{wc\_str}{wxstringwcstr}
 
 \membersection{wxString::\destruct{wxString}}\label{wxstringdestruct}
 
@@ -464,7 +500,7 @@ wxString DeleteAllVowels(const wxString& original)
 
 \end{verbatim}
 
-because it will avoid the need of reallocating string memory many times (in case
+because it will avoid the need to reallocate string memory many times (in case
 of long strings). Note that it does not set the maximal length of a string - it
 will still expand if more than {\it nLen} characters are stored in it. Also, it
 does not truncate the existing string (use 
@@ -512,9 +548,15 @@ Returns the empty string if {\it ch} is not found.
 
 \membersection{wxString::c\_str}\label{wxstringcstr}
 
-\constfunc{const char *}{c\_str}{\void}
+\constfunc{const wxChar *}{c\_str}{\void}
+
+Returns a pointer to the string data ({\tt const char*} in ANSI build,
+{\tt const wchar\_t*} in Unicode build).
+
+\wxheading{See also}
 
-Returns a pointer to the string data.
+\helpref{mb\_str}{wxstringmbstr}, \helpref{wc\_str}{wxstringwcstr},
+\helpref{fn\_str}{wxstringfnstr}
 
 \membersection{wxString::Clear}\label{wxstringclear}
 
@@ -526,6 +568,8 @@ See also: \helpref{Empty}{wxstringempty}
 
 \membersection{wxString::Cmp}\label{wxstringcmp}
 
+\constfunc{int}{Cmp}{\param{const wxString\&}{ s}}
+
 \constfunc{int}{Cmp}{\param{const char*}{ psz}}
 
 Case-sensitive comparison.
@@ -538,6 +582,8 @@ See also \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissa
 
 \membersection{wxString::CmpNoCase}\label{wxstringcmpnocase}
 
+\constfunc{int}{CmpNoCase}{\param{const wxString\&}{ s}}
+
 \constfunc{int}{CmpNoCase}{\param{const char*}{ psz}}
 
 Case-insensitive comparison.
@@ -563,7 +609,7 @@ Case-sensitive comparison. Returns 0 if equal, 1 if greater or -1 if less.
 
 \constfunc{bool}{Contains}{\param{const wxString\&}{ str}}
 
-Returns 1 if target appears anyhere in wxString; else 0.
+Returns 1 if target appears anywhere in wxString; else 0.
 
 \membersection{wxString::Empty}\label{wxstringempty}
 
@@ -593,6 +639,25 @@ Searches for the given string. Returns the starting index, or -1 if not found.
 
 Same as \helpref{Find}{wxstringfind}.
 
+\membersection{wxString::fn\_str}\label{wxstringfnstr}
+
+\constfunc{const wchar\_t*}{fn\_str}{\void}
+
+\constfunc{const char*}{fn\_str}{\void}
+
+\constfunc{const wxCharBuffer}{fn\_str}{\void}
+
+Returns string representation suitable for passing to OS' functions for
+file handling. In ANSI build, this is same as \helpref{c\_str}{wxstringcstr}.
+In Unicode build, returned value can be either wide character string
+or C string in charset matching the {\tt wxConvFileName} object, depending on
+the OS.
+
+\wxheading{See also}
+
+\helpref{wxMBConv}{wxmbconv},
+\helpref{wc\_str}{wxstringwcstr}, \helpref{mb\_str}{wxstringwcstr}
+
 \membersection{wxString::Format}\label{wxstringformat}
 
 \func{static wxString}{Format}{\param{const wxChar }{*format}, \param{}{...}}
@@ -606,7 +671,7 @@ This static function returns the string containing the result of calling
 
 \membersection{wxString::FormatV}\label{wxstringformatv}
 
-\func{static wxString}{Format}{\param{const wxChar }{*format}, \param{va\_list }{argptr}}
+\func{static wxString}{FormatV}{\param{const wxChar }{*format}, \param{va\_list }{argptr}}
 
 This static function returns the string containing the result of calling 
 \helpref{PrintfV}{wxstringprintfv} with the passed parameters on it.
@@ -629,7 +694,9 @@ Returns the number of occurrences of {\it ch} in the string.
 
 Converts the string or character from an ASCII, 7-bit form
 to the native wxString representation. Most useful when using
-a Unicode build of wxWindows.
+a Unicode build of wxWidgets.
+Use \helpref{wxString constructors}{wxstringconstruct} if you
+need to convert from another charset.
 
 \membersection{wxString::GetChar}\label{wxstringgetchar}
 
@@ -639,9 +706,9 @@ Returns the character at position {\it n} (read-only).
 
 \membersection{wxString::GetData}\label{wxstringgetdata}
 
-\constfunc{const char*}{GetData}{\void}
+\constfunc{const wxChar*}{GetData}{\void}
 
-wxWindows compatibility conversion. Returns a constant pointer to the data in the string.
+wxWidgets compatibility conversion. Returns a constant pointer to the data in the string.
 
 \membersection{wxString::GetWritableChar}\label{wxstringgetwritablechar}
 
@@ -668,16 +735,6 @@ to put the string back into a reasonable state.
 
 Same as \helpref{wxString::Find}{wxstringfind}.
 
-\constfunc{size\_t}{Index}{\param{const char*}{ sz}, \param{bool}{ caseSensitive = true}, \param{bool}{ fromEnd = false}}
-
-Search the element in the array, starting from either side.
-
-If {\it fromEnd} is true, reverse search direction.
-
-If {\bf caseSensitive}, comparison is case sensitive (the default).
-
-Returns the index of the first item matched, or wxNOT\_FOUND.
-
 % TODO
 %\membersection{wxString::insert}\label{wxstringinsert}
 % Wrong!
@@ -719,9 +776,7 @@ caseSensitive is true by default (case matters).
 
 Returns true if strings are equal, false otherwise.
 
-See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas2}
-
-\membersection{wxString::IsSameAs}\label{wxstringissameas2}
+See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}
 
 \constfunc{bool}{IsSameAs}{\param{char}{ c}, \param{bool}{ caseSensitive = true}}
 
@@ -730,7 +785,7 @@ case-sensitive if {\it caseSensitive} is true (default) or not if it is false.
 
 Returns true if the string is equal to the character, false otherwise.
 
-See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas}
+See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}
 
 \membersection{wxString::IsWord}\label{wxstringisword}
 
@@ -796,6 +851,24 @@ Converts all characters to upper case and returns the result.
 
 Returns true if the string contents matches a mask containing '*' and '?'.
 
+\membersection{wxString::mb\_str}\label{wxstringmbstr}
+
+\constfunc{const char*}{mb\_str}{\param{wxMBConv\&}{ conv}}
+
+\constfunc{const wxCharBuffer}{mb\_str}{\param{wxMBConv\&}{ conv}}
+
+Returns multibyte (C string) representation of the string.
+In Unicode build, converts using \arg{conv}'s \helpref{cWC2MB}{wxmbconvcwc2mb}
+method and returns wxCharBuffer. In ANSI build, this function is same
+as \helpref{c\_str}{wxstringcstr}.
+The macro wxWX2MBbuf is defined as the correct return type (without const).
+
+\wxheading{See also}
+
+\helpref{wxMBConv}{wxmbconv},
+\helpref{c\_str}{wxstringcstr}, \helpref{wc\_str}{wxstringwcstr},
+\helpref{fn\_str}{wxstringfnstr}
+
 \membersection{wxString::Mid}\label{wxstringmid}
 
 \constfunc{wxString}{Mid}{\param{size\_t}{ first}, \param{size\_t}{ count = wxSTRING\_MAXLEN}}
@@ -824,6 +897,19 @@ Prepends {\it str} to this string, returning a reference to this string.
 Similar to the standard function {\it sprintf()}. Returns the number of
 characters written, or an integer less than zero on error.
 
+Note that if {\tt wxUSE\_PRINTF\_POS\_PARAMS} is set to 1, then this function supports
+Unix98-style positional parameters:
+
+\begin{verbatim}
+    wxString str;
+
+    str.Printf(wxT("%d %d %d"), 1, 2, 3);
+    // str now contains "1 2 3"
+
+    str.Printf(wxT("%2$d %3$d %1$d"), 1, 2, 3);
+    // str now contains "2 3 1"
+\end{verbatim}
+
 {\bf NB:} This function will use a safe version of {\it vsprintf()} (usually called 
 {\it vsnprintf()}) whenever available to always allocate the buffer of correct
 size. Unfortunately, this function is not available on all platforms and the
@@ -844,7 +930,7 @@ Same as Truncate. Removes the portion from {\it pos} to the end of the string.
 
 \func{wxString\&}{Remove}{\param{size\_t}{ pos}, \param{size\_t}{ len}}
 
-Removes the {\it len} characters from the string, starting at {\it pos}.
+Removes {\it len} characters from the string, starting at {\it pos}.
 
 \membersection{wxString::RemoveLast}\label{wxstringremovelast}
 
@@ -897,6 +983,16 @@ of the string (i.e. after the prefix) into {\it rest} string if it is not
 {\tt NULL}. Otherwise, the function returns {\tt false} and doesn't modify the 
 {\it rest}.
 
+\membersection{wxString::EndsWith}\label{wxstringendswith}
+
+\constfunc{bool}{EndsWith}{\param{const wxChar }{*suffix}, \param{wxString }{*rest = NULL}}
+
+This function can be used to test if the string ends with the specified 
+{\it suffix}. If it does, the function will return {\tt true} and put the
+beginning of the string before the suffix into {\it rest} string if it is not 
+{\tt NULL}. Otherwise, the function returns {\tt false} and doesn't
+modify the {\it rest}.
+
 \membersection{wxString::Strip}\label{wxstringstrip}
 
 \begin{verbatim}
@@ -929,6 +1025,10 @@ Converts the string to an ASCII, 7-bit string (ANSI builds only).
 Converts the string to an ASCII, 7-bit string in the form of
 a wxCharBuffer (Unicode builds only).
 
+Note that this conversion only works if the string contains only ASCII
+characters. The \helpref{mb\_str}{wxstringmbstr} method provides more
+powerful means of converting wxString to C string.
+
 \membersection{wxString::ToDouble}\label{wxstringtodouble}
 
 \constfunc{bool}{ToDouble}{\param{double}{ *val}}
@@ -968,10 +1068,13 @@ familiar with C) results.
 
 \constfunc{bool}{ToULong}{\param{unsigned long}{ *val}, \param{int }{base = $10$}}
 
-Attempts to convert the string to a ansigned integer in base {\it base}.
+Attempts to convert the string to an unsigned integer in base {\it base}.
 Returns {\tt true} on success in which case the number is stored in the
 location pointed to by {\it val} or {\tt false} if the string does not
-represent a valid number in the given base.
+represent a valid number in the given base. Please notice that this function
+behaves in the same way as the standard \texttt{strtoul()} and so it simply
+converts negative numbers to unsigned representation instead of rejecting them
+(e.g. $-1$ is returned as \texttt{ULONG\_MAX}).
 
 See \helpref{wxString::ToLong}{wxstringtolong} for the more detailed
 description of the {\it base} parameter.
@@ -985,7 +1088,8 @@ description of the {\it base} parameter.
 
 \func{wxString\&}{Trim}{\param{bool}{ fromRight = true}}
 
-Removes spaces from the left or from the right (default).
+Removes white-space (space, tabs, form feed, newline and carriage return) from
+the left or from the right end of the string (right is default).
 
 \membersection{wxString::Truncate}\label{wxstringtruncate}
 
@@ -1022,12 +1126,30 @@ Returns this string converted to upper case.
 
 The same as MakeUpper.
 
+\membersection{wxString::wc\_str}\label{wxstringwcstr}
+
+\constfunc{const wchar\_t*}{wc\_str}{\param{wxMBConv\&}{ conv}}
+
+\constfunc{const wxWCharBuffer}{wc\_str}{\param{wxMBConv\&}{ conv}}
+
+Returns wide character representation of the string.
+In ANSI build, converts using \arg{conv}'s \helpref{cMB2WC}{wxmbconvcmb2wc}
+method and returns wxWCharBuffer. In Unicode build, this function is same
+as \helpref{c\_str}{wxstringcstr}.
+The macro wxWX2WCbuf is defined as the correct return type (without const).
+
+\wxheading{See also}
+
+\helpref{wxMBConv}{wxmbconv},
+\helpref{c\_str}{wxstringcstr}, \helpref{mb\_str}{wxstringwcstr},
+\helpref{fn\_str}{wxstringfnstr}
+
 \membersection{wxString::operator!}\label{wxstringoperatornot}
 
 \constfunc{bool}{operator!}{\void}
 
 Empty string is false, so !string will only return true if the string is empty.
-This allows the tests for NULLness of a {\it const char *} pointer and emptyness
+This allows the tests for NULLness of a {\it const char *} pointer and emptiness
 of the string to look the same in the code and makes it easier to port old code
 to wxString.
 
@@ -1050,8 +1172,8 @@ constructor (see \helpref{wxString constructors}{wxstringconstruct}).
 
 \membersection{wxString::operator $+$}\label{wxstringoperatorplus}
 
-Concatenation: all these operators return a new strign equal to the sum of the
-operands.
+Concatenation: all these operators return a new string equal to the
+concatenation of the operands.
 
 \func{wxString}{operator $+$}{\param{const wxString\&}{ x}, \param{const wxString\&}{ y}}
 
@@ -1073,11 +1195,13 @@ Concatenation in place: the argument is appended to the string.
 
 \membersection{wxString::operator []}\label{wxstringoperatorbracket}
 
-\func{char\&}{operator []}{\param{size\_t}{ i}}
+\func{wxChar\&}{operator []}{\param{size\_t}{ i}}
 
-\func{char}{operator []}{\param{size\_t}{ i}}
+\constfunc{wxChar}{operator []}{\param{size\_t}{ i}}
 
-\func{char}{operator []}{\param{int}{ i}}
+\func{wxChar\&}{operator []}{\param{int}{ i}}
+
+\constfunc{wxChar}{operator []}{\param{int}{ i}}
 
 Element extraction.
 
@@ -1153,7 +1277,7 @@ These comparisons are case-sensitive.
 \section{\class{wxStringBuffer}}\label{wxstringbuffer}
 
 This tiny class allows to conveniently access the \helpref{wxString}{wxstring} 
-internal buffer as a writable pointer without any risk to forget to restore
+internal buffer as a writable pointer without any risk of forgetting to restore
 the string to the usable state later.
 
 For example, assuming you have a low-level OS function called 
@@ -1169,6 +1293,13 @@ buffer (which must be writable, of course) you might call it like this:
     }
 \end{verbatim}
 
+Note that the exact usage of this depends on whether on not wxUSE\_STL is enabled.  If
+wxUSE\_STL is enabled, wxStringBuffer creates a separate empty character buffer, and
+if wxUSE\_STL is disabled, it uses GetWriteBuf() from wxString, keeping the same buffer
+wxString uses intact.  In other words, relying on wxStringBuffer containing the old 
+wxString data is probably not a good idea if you want to build your program in both
+with and without wxUSE\_STL.
+
 \wxheading{Derived from}
 
 None
@@ -1179,7 +1310,7 @@ None
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxStringBuffer::wxStringBuffer}
+\membersection{wxStringBuffer::wxStringBuffer}\label{wxstringbufferctor}
 
 \func{}{wxStringBuffer}{\param{const wxString\& }{str}, \param{size\_t }{len}}
 
@@ -1188,16 +1319,92 @@ and containing enough space for at least {\it len} characters. Basically, this
 is equivalent to calling \helpref{GetWriteBuf}{wxstringgetwritebuf} and
 saving the result.
 
-\membersection{wxStringBuffer::\destruct{wxStringBuffer}}
+\membersection{wxStringBuffer::\destruct{wxStringBuffer}}\label{wxstringbufferdtor}
 
 \func{}{\destruct{wxStringBuffer}}{\void}
 
 Restores the string passed to the constructor to the usable state by calling 
 \helpref{UngetWriteBuf}{wxstringungetwritebuf} on it.
 
-\membersection{wxStringBuffer::operator wxChar *}
+\membersection{wxStringBuffer::operator wxChar *}\label{wxstringbufferwxchar}
+
+\func{wxChar *}{operator wxChar *}{\void}
+
+Returns the writable pointer to a buffer of the size at least equal to the
+length specified in the constructor.
+
+
+
+\section{\class{wxStringBufferLength}}\label{wxstringbufferlength}
+
+This tiny class allows to conveniently access the \helpref{wxString}{wxstring} 
+internal buffer as a writable pointer without any risk of forgetting to restore
+the string to the usable state later, and allows the user to set the internal
+length of the string.
+
+For example, assuming you have a low-level OS function called 
+{\tt int GetMeaningOfLifeAsString(char *)} copying the value in the provided
+buffer (which must be writable, of course), and returning the actual length
+of the string, you might call it like this:
+
+\begin{verbatim}
+    wxString theAnswer;
+    wxStringBuffer theAnswerBuffer(theAnswer, 1024);
+    int nLength = GetMeaningOfLifeAsString(theAnswerBuffer);
+    theAnswerBuffer.SetLength(nLength);
+    if ( theAnswer != "42" )
+    {
+        wxLogError("Something is very wrong!");
+    }
+\end{verbatim}
+
+Note that the exact usage of this depends on whether on not wxUSE\_STL is enabled.  If
+wxUSE\_STL is enabled, wxStringBuffer creates a separate empty character buffer, and
+if wxUSE\_STL is disabled, it uses GetWriteBuf() from wxString, keeping the same buffer
+wxString uses intact.  In other words, relying on wxStringBuffer containing the old 
+wxString data is probably not a good idea if you want to build your program in both
+with and without wxUSE\_STL.
+
+Note that SetLength {\tt must} be called before wxStringBufferLength destructs.
+
+\wxheading{Derived from}
+
+None
+
+\wxheading{Include files}
+
+<wx/string.h>
+
+\latexignore{\rtfignore{\wxheading{Members}}}
+
+\membersection{wxStringBufferLength::wxStringBufferLength}\label{wxstringbufferlengthctor}
+
+\func{}{wxStringBufferLength}{\param{const wxString\& }{str}, \param{size\_t }{len}}
+
+Constructs a writable string buffer object associated with the given string
+and containing enough space for at least {\it len} characters. Basically, this
+is equivalent to calling \helpref{GetWriteBuf}{wxstringgetwritebuf} and
+saving the result.
+
+\membersection{wxStringBufferLength::\destruct{wxStringBufferLength}}\label{wxstringbufferlengthdtor}
+
+\func{}{\destruct{wxStringBufferLength}}{\void}
+
+Restores the string passed to the constructor to the usable state by calling 
+\helpref{UngetWriteBuf}{wxstringungetwritebuf} on it.
+
+\membersection{wxStringBufferLength::SetLength}\label{wxstringbufferlengthsetlength}
+
+\func{void}{SetLength}{\param{size\_t }{nLength}}
+
+Sets the internal length of the string referred to by wxStringBufferLength to 
+{\it nLength} characters.
+
+Must be called before wxStringBufferLength destructs.
+
+\membersection{wxStringBufferLength::operator wxChar *}\label{wxstringbufferlengthwxchar}
 
-\constfunc{wxChar *}{operator wxChar *}{\void}
+\func{wxChar *}{operator wxChar *}{\void}
 
 Returns the writable pointer to a buffer of the size at least equal to the
 length specified in the constructor.