are not supported, nor all methods which use them).
These standard functions are not documented in this manual so please see the STL documentation.
The behaviour of all these functions is identical to the behaviour described
-there.
+there (except that wxString is sensitive to null character).
+
+You may notice that wxString sometimes has many functions which do the same
+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
+starts using it instead of wxString.
\wxheading{Derived from}
insensitive comparisons you should use \helpref{CmpNoCase}{wxstringcmpnocase} or
give a second parameter to IsSameAs. This last function is may be more
convenient if only equality of the strings matters because it returns a boolean
-true value if the strings are the same and not 0 (which is usually FALSE in C)
+true value if the strings are the same and not 0 (which is usually false in C)
as {\tt Cmp()} does.
\helpref{Matches}{wxstringmatches} is a poor man's regular expression matcher:
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
-put the numeric value in and return TRUE if the {\bf entire} string could be
+put the numeric value in and return true if the {\bf entire} string could be
converted to a number.
\helpref{ToLong}{wxstringtolong}\\
\membersection{wxString::Find}\label{wxstringfind}
-\constfunc{int}{Find}{\param{char}{ ch}, \param{bool}{ fromEnd = FALSE}}
+\constfunc{int}{Find}{\param{char}{ ch}, \param{bool}{ fromEnd = false}}
Searches for the given character. Returns the starting index, or -1 if not found.
\membersection{wxString::First}\label{wxstringfirst}
-\func{size\_t}{First}{\param{char}{ c}}
-
-\constfunc{size\_t}{First}{\param{const char*}{ psz}}
+\func{int}{First}{\param{char}{ c}}
-\constfunc{size\_t}{First}{\param{const wxString\&}{ str}}
+\constfunc{int}{First}{\param{const char*}{ psz}}
-\constfunc{size\_t}{First}{\param{const char}{ ch}}
+\constfunc{int}{First}{\param{const wxString\&}{ str}}
-Returns the first occurrence of the item.
+Same as \helpref{Find}{wxstringfind}.
\membersection{wxString::Format}\label{wxstringformat}
\membersection{wxString::GetWriteBuf}\label{wxstringgetwritebuf}
-\func{char*}{GetWriteBuf}{\param{size\_t}{ len}}
+\func{wxChar*}{GetWriteBuf}{\param{size\_t}{ len}}
Returns a writable buffer of at least {\it len} bytes.
+It returns a pointer to a new memory block, and the
+existing data will not be copied.
Call \helpref{wxString::UngetWriteBuf}{wxstringungetwritebuf} as soon as possible
to put the string back into a reasonable state.
\constfunc{size\_t}{Index}{\param{char}{ ch}}
-Same as \helpref{wxString::Find}{wxstringfind}.
-
\constfunc{size\_t}{Index}{\param{const char*}{ sz}}
Same as \helpref{wxString::Find}{wxstringfind}.
-\constfunc{size\_t}{Index}{\param{const char*}{ sz}, \param{bool}{ caseSensitive = TRUE}, \param{bool}{ fromEnd = FALSE}}
+\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 {\it fromEnd} is true, reverse search direction.
If {\bf caseSensitive}, comparison is case sensitive (the default).
\constfunc{bool}{IsAscii}{\void}
-Returns TRUE if the string contains only ASCII characters.
+Returns true if the string contains only ASCII characters.
\membersection{wxString::IsEmpty}\label{wxstringisempty}
\constfunc{bool}{IsEmpty}{\void}
-Returns TRUE if the string is empty.
+Returns true if the string is empty.
\membersection{wxString::IsNull}\label{wxstringisnull}
\constfunc{bool}{IsNull}{\void}
-Returns TRUE if the string is empty (same as \helpref{IsEmpty}{wxstringisempty}).
+Returns true if the string is empty (same as \helpref{IsEmpty}{wxstringisempty}).
\membersection{wxString::IsNumber}\label{wxstringisnumber}
\constfunc{bool}{IsNumber}{\void}
-Returns TRUE if the string is an integer (with possible sign).
+Returns true if the string is an integer (with possible sign).
\membersection{wxString::IsSameAs}\label{wxstringissameas}
-\constfunc{bool}{IsSameAs}{\param{const char*}{ psz}, \param{bool}{ caseSensitive = TRUE}}
+\constfunc{bool}{IsSameAs}{\param{const char*}{ psz}, \param{bool}{ caseSensitive = true}}
Test for string equality, case-sensitive (default) or not.
-caseSensitive is TRUE by default (case matters).
+caseSensitive is true by default (case matters).
-Returns TRUE if strings are equal, FALSE otherwise.
+Returns true if strings are equal, false otherwise.
See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas2}
\membersection{wxString::IsSameAs}\label{wxstringissameas2}
-\constfunc{bool}{IsSameAs}{\param{char}{ c}, \param{bool}{ caseSensitive = TRUE}}
+\constfunc{bool}{IsSameAs}{\param{char}{ c}, \param{bool}{ caseSensitive = true}}
Test whether the string is equal to the single character {\it c}. The test is
-case-sensitive if {\it caseSensitive} is TRUE (default) or not if it is FALSE.
+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.
+Returns true if the string is equal to the character, false otherwise.
See also \helpref{Cmp}{wxstringcmp}, \helpref{CmpNoCase}{wxstringcmpnocase}, \helpref{IsSameAs}{wxstringissameas}
\constfunc{bool}{IsWord}{\void}
-Returns TRUE if the string is a word. TODO: what's the definition of a word?
+Returns true if the string is a word. TODO: what's the definition of a word?
\membersection{wxString::Last}\label{wxstringlast}
\membersection{wxString::MakeLower}\label{wxstringmakelower}
-\func{void}{MakeLower}{\void}
+\func{wxString\&}{MakeLower}{\void}
-Converts all characters to lower case.
+Converts all characters to lower case and returns the result.
\membersection{wxString::MakeUpper}\label{wxstringmakeupper}
-\func{void}{MakeUpper}{\void}
+\func{wxString\&}{MakeUpper}{\void}
-Converts all characters to upper case.
+Converts all characters to upper case and returns the result.
\membersection{wxString::Matches}\label{wxstringmatches}
\constfunc{bool}{Matches}{\param{const char*}{ szMask}}
-Returns TRUE if the string contents matches a mask containing '*' and '?'.
+Returns true if the string contents matches a mask containing '*' and '?'.
\membersection{wxString::Mid}\label{wxstringmid}
\membersection{wxString::Pad}\label{wxstringpad}
-\func{wxString\&}{Pad}{\param{size\_t}{ count}, \param{char}{ pad = ' '}, \param{bool}{ fromRight = TRUE}}
+\func{wxString\&}{Pad}{\param{size\_t}{ count}, \param{char}{ pad = ' '}, \param{bool}{ fromRight = true}}
Adds {\it count} copies of {\it pad} to the beginning, or to the end of the string (the default).
\membersection{wxString::Replace}\label{wxstringreplace}
-\func{size\_t}{Replace}{\param{const char*}{ szOld}, \param{const char*}{ szNew}, \param{bool}{ replaceAll = TRUE}}
+\func{size\_t}{Replace}{\param{const char*}{ szOld}, \param{const char*}{ szNew}, \param{bool}{ replaceAll = true}}
Replace first (or all) occurrences of substring with another one.
\constfunc{bool}{StartsWith}{\param{const wxChar }{*prefix}, \param{wxString }{*rest = NULL}}
This function can be used to test if the string starts with the specified
-{\it prefix}. If it does, the function will return {\tt TRUE} and put the rest
+{\it prefix}. If it does, the function will return {\tt true} and put the rest
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
+{\tt NULL}. Otherwise, the function returns {\tt false} and doesn't modify the
{\it rest}.
\membersection{wxString::Strip}\label{wxstringstrip}
\constfunc{bool}{ToDouble}{\param{double}{ *val}}
-Attempts to convert the string to a floating point number. Returns TRUE on
-success (the number is stored in the location pointed to by {\it val}) or FALSE
+Attempts to convert the string to a floating point number. Returns true on
+success (the number is stored in the location pointed to by {\it val}) or false
if the string does not represent such number.
\wxheading{See also}
\constfunc{bool}{ToLong}{\param{long}{ *val}, \param{int }{base = $10$}}
Attempts to convert the string to a signed 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
+{\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.
The value of {\it base} must be comprised between $2$ and $36$, inclusive, or
\constfunc{bool}{ToULong}{\param{unsigned long}{ *val}, \param{int }{base = $10$}}
Attempts to convert the string to a ansigned 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
+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.
See \helpref{wxString::ToLong}{wxstringtolong} for the more detailed
\membersection{wxString::Trim}\label{wxstringtrim}
-\func{wxString\&}{Trim}{\param{bool}{ fromRight = TRUE}}
+\func{wxString\&}{Trim}{\param{bool}{ fromRight = true}}
Removes spaces from the left or from the right (default).
\func{void}{UngetWriteBuf}{\void}
-Puts the string back into a reasonable state, after
+\func{void}{UngetWriteBuf}{\param{size\_t }{len}}
+
+Puts the string back into a reasonable state (in which it can be used
+normally), after
\rtfsp\helpref{wxString::GetWriteBuf}{wxstringgetwritebuf} was called.
+The version of the function without the {\it len} parameter will calculate the
+new string length itself assuming that the string is terminated by the first
+{\tt NUL} character in it while the second one will use the specified length
+and thus is the only version which should be used with the strings with
+embedded {\tt NUL}s (it is also slightly more efficient as {\tt strlen()}
+doesn't have to be called).
+
\membersection{wxString::Upper}\label{wxstringupper}
\constfunc{wxString}{Upper}{\void}
\constfunc{bool}{operator!}{\void}
-Empty string is FALSE, so !string will only return TRUE if the string is empty.
+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
of the string to look the same in the code and makes it easier to port old code
to wxString.
projects / wxWidgets.git / blobdiff