X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0c5d3e1ccd1d27ab0cf913ddbffb1b54b5802f3a..3b415ba4cdee694574d7235ff0b8341f105cddfe:/docs/latex/wx/tunicode.tex diff --git a/docs/latex/wx/tunicode.tex b/docs/latex/wx/tunicode.tex index 43f36eb773..2f4f472597 100644 --- a/docs/latex/wx/tunicode.tex +++ b/docs/latex/wx/tunicode.tex @@ -47,6 +47,7 @@ be compiled either in ANSI (traditional) mode or in the Unicode one. This can be achieved quite simply by using the means provided by wxWindows. Basicly, there are only a few things to watch out for: + \begin{itemize} \item Character type ({\tt char} or {\tt wchar\_t}) \item Literal strings (i.e. {\tt "Hello, world!"} or {\tt '*'}) @@ -89,7 +90,7 @@ in both ANSI and Unicode modes could look like: \end{verbatim} Of course, it would be nearly impossibly to write such programs if it had to -be done this way (try to imagine the number of {\tt #ifdef UNICODE} an average +be done this way (try to imagine the number of {\tt \#ifdef UNICODE} an average program would have had!). Luckily, there is another way - see the next section. @@ -98,12 +99,12 @@ section. In wxWindows, the code fragment froim above should be written instead: \begin{verbatim} - wxChar ch = T('*'); - wxString s = T("Hello, world!"); + wxChar ch = wxT('*'); + wxString s = wxT("Hello, world!"); int len = s.Len(); \end{verbatim} -What happens here? First of all, you see that there are no more {\tt #ifdef}s +What happens here? First of all, you see that there are no more {\tt \#ifdef}s at all. Instead, we define some types and macros which behave differently in the Unicode and ANSI builds and allows us to avoid using conditional compilation in the program itself. @@ -111,25 +112,26 @@ compilation in the program itself. We have a {\tt wxChar} type which maps either on {\tt char} or {\tt wchar\_t} depending on the mode in which program is being compiled. There is no need for a separate type for strings though, because the standard -\helpref{wxString}{wxstring} supports Unicode, i.e. it stores iether ANSI or -Unicode strings depending on the mode. +\helpref{wxString}{wxstring} supports Unicode, i.e. it stores either ANSI or +Unicode strings depending on the compile mode. -Finally, there is a special {\tt T()} macro which should enclose all literal +Finally, there is a special {\tt wxT()} macro which should enclose all literal strings in the program. As it's easy to see comparing the last fragment with the one above, this macro expands to nothing in the (usual) ANSI mode and prefixes {\tt 'L'} to its argument in the Unicode mode. The important conclusion is that if you use {\tt wxChar} instead of {\tt char}, avoid using C style strings and use {\tt wxString} instead and -don't forget to enclose all string literals inside {\tt T()} macro, your +don't forget to enclose all string literals inside {\tt wxT()} macro, your program automatically becomes (almost) Unicode compliant! Just let us state once again the rules: + \begin{itemize} \item Always use {\tt wxChar} instead of {\tt char} -\item Always enclose literal string constants in {\tt T()} macro unless +\item Always enclose literal string constants in {\tt wxT()} macro unless they're already converted to the right representation (another standard -wxWindows macro {\tt \_()} does it, so there is no need for {\tt T()} in this +wxWindows macro {\tt \_()} does it, so there is no need for {\tt wxT()} in this case) or you intend to pass the constant directly to an external function which doesn't accept wide-character strings. \item Use {\tt wxString} instead of C style strings. @@ -145,12 +147,14 @@ ANSI strings (a notable exception is the entire Win32 API which accepts either Unicode or ANSI strings and which thus makes it unnecessary to ever perform any convertions in the program). -To get a ANSI string from a wxString, you may use -\helpref{mb\_str()}{wxstringmbstr} function which always returns an ANSI +To get a ANSI string from a wxString, you may use the +mb\_str() function which always returns an ANSI string (independently of the mode - while the usual \helpref{c\_str()}{wxstringcstr} returns a pointer to the internal representation which is either ASCII or Unicode). More rarely used, but still -useful, is \helpref{wc\_str()}{wxstringwcstr} function which always returns +useful, is wc\_str() function which always returns the Unicode string. % TODO describe fn_str(), wx_str(), wxCharBuf classes, ... +% Please remember to put a blank line at the end of each file! (Tex2RTF 'issue') +