X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7335902d0f14c2887a873f2724fb3619f4864be4..8dba8632c5bcd64724e2e9e2d40e295555a0cb86:/docs/latex/wx/wxstring.tex diff --git a/docs/latex/wx/wxstring.tex b/docs/latex/wx/wxstring.tex index bf9a52fddc..7ad9ea73ad 100644 --- a/docs/latex/wx/wxstring.tex +++ b/docs/latex/wx/wxstring.tex @@ -673,25 +673,25 @@ Returns the index of the first item matched, or NOT\_FOUND. \constfunc{bool}{IsAscii}{\void} -Returns TRUE if the string is ASCII. +Returns TRUE if the string contains only ASCII characters. \membersection{wxString::IsEmpty}\label{wxstringisempty} \constfunc{bool}{IsEmpty}{\void} -Returns TRUE if the string is NULL. +Returns TRUE if the string is empty. \membersection{wxString::IsNull}\label{wxstringisnull} \constfunc{bool}{IsNull}{\void} -Returns TRUE if the string is NULL (same as IsEmpty). +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 a positive or negative integer. Will return FALSE for decimals. +Returns TRUE if the string is an integer (with possible sign). \membersection{wxString::IsSameAs}\label{wxstringissameas} @@ -922,11 +922,17 @@ if the string does not represent such number. \membersection{wxString::ToLong}\label{wxstringtolong} -\constfunc{bool}{ToLong}{\param{long}{ *val}} +\constfunc{bool}{ToLong}{\param{long}{ *val}, \param{int }{base = 0}} -Attempts to convert the string to a signed integer. 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. +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 +valid number in the given base. + +The default value of {\it base} $0$ is special and means that the usual rules +of {\tt C} numbers are applied: if the number starts with {\tt 0x} it is +considered to be in base $16$, if it starts with {\tt 0} - in base $8$ and in +base $10$ otherwise. \wxheading{See also} @@ -935,11 +941,17 @@ string does not represent such number. \membersection{wxString::ToULong}\label{wxstringtoulong} -\constfunc{bool}{ToULong}{\param{unsigned long}{ *val}} +\constfunc{bool}{ToULong}{\param{unsigned long}{ *val}, \param{int }{base = 0}} + +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 +represent a valid number in the given base. -Attempts to convert the string to an unsigned integer. 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. +The default value of {\it base} $0$ is special and means that the usual rules +of {\tt C} numbers are applied: if the number starts with {\tt 0x} it is +considered to be in base $16$, if it starts with {\tt 0} - in base $8$ and in +base $10$ otherwise. \wxheading{See also} @@ -1104,3 +1116,57 @@ Implicit conversion to a C string. 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 +the string to the usable state later. + +For example, assuming you have a low-level OS function called +{\tt GetMeaningOfLifeAsString(char *)} returning the value in the provided +buffer (which must be writable, of course) you might call it like this: + +\begin{verbatim} + wxString theAnswer; + GetMeaningOfLifeAsString(wxStringBuffer(theAnswer, 1024)); + if ( theAnswer != "42" ) + { + wxLogError("Something is very wrong!"); + } +\end{verbatim} + +\wxheading{Derived from} + +None + +\wxheading{Include files} + + + +\latexignore{\rtfignore{\wxheading{Members}}} + +\membersection{wxStringBuffer::wxStringBuffer} + +\func{}{wxStringBuffer}{\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. Basicly, this +is equivalent to calling \helpref{GetWriteBuf}{wxstringgetwritebuf} and +saving the result. + +\membersection{wxStringBuffer::\destruct{wxStringBuffer}} + +\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 *} + +\constfunc{wxChar *}{operator wxChar *}{\void} + +Returns the writable pointer to a buffer of the size at least equal to the +length specified in the constructor. + +