Whole bunch of minor doc updates from an external patch.

[wxWidgets.git] / docs / latex / wx / encconv.tex

diff --git a/docs/latex/wx/encconv.tex b/docs/latex/wx/encconv.tex
index 39e14fbfd9653f7cebd5c6ee08bb13c7c8d5b85b..312e47216a94d70033dfc2c4991dab593b63590a 100644 (file)
--- a/docs/latex/wx/encconv.tex
+++ b/docs/latex/wx/encconv.tex
@@ -5,9 +5,20 @@
 
 \section{\class{wxEncodingConverter}}\label{wxencodingconverter}
 
-This class is capable of converting strings between any two
+This class is capable of converting strings between two
 8-bit encodings/charsets. It can also convert from/to Unicode (but only
-if you compiled wxWindows with wxUSE\_WCHAR\_T set to 1).
+if you compiled wxWidgets with wxUSE\_WCHAR\_T set to 1). Only limited subset
+of encodings in supported by wxEncodingConverter:
+{\tt wxFONTENCODING\_ISO8859\_1..15}, {\tt wxFONTENCODING\_CP1250..1257} and 
+{\tt wxFONTENCODING\_KOI8}.
+
+\wxheading{Note}
+
+Please use \helpref{wxMBConv classes}{mbconvclasses} instead
+if possible. \helpref{wxCSConv}{wxcsconv} has much better support for various
+encodings than wxEncodingConverter. wxEncodingConverter is useful only
+if you rely on {\tt wxCONVERT\_SUBSTITUTE} mode of operation (see 
+\helpref{Init}{wxencodingconverterinit}).
 
 \wxheading{Derived from}
 
@@ -26,12 +37,14 @@ if you compiled wxWindows with wxUSE\_WCHAR\_T set to 1).
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
+
 \membersection{wxEncodingConverter::wxEncodingConverter}\label{wxencodingconverterwxencodingconverter}
 
 \func{}{wxEncodingConverter}{\void}
 
 Constructor.
 
+
 \membersection{wxEncodingConverter::Init}\label{wxencodingconverterinit}
 
 \func{bool}{Init}{\param{wxFontEncoding }{input\_enc}, \param{wxFontEncoding }{output\_enc}, \param{int }{method = wxCONVERT\_STRICT}}
@@ -61,33 +74,52 @@ as input string.
 
 \wxheading{Return value} 
 
-FALSE if given conversion is impossible, TRUE otherwise
+false if given conversion is impossible, true otherwise
 (conversion may be impossible either if you try to convert
-to Unicode with non-Unicode build of wxWindows or if input
+to Unicode with non-Unicode build of wxWidgets or if input
 or output encoding is not supported.)
 
+
+\membersection{wxEncodingConverter::CanConvert}\label{wxencodingconvertercanconvert}
+
+\func{static bool}{CanConvert}{\param{wxFontEncoding}{encIn}, \param{wxFontEncoding }{encOut}}
+
+Return true if (any text in) multibyte encoding \arg{encIn} can be converted to
+another one ({\it encOut}) losslessly.
+
+Do not call this method with \texttt{wxFONTENCODING\_UNICODE} as either
+parameter, it doesn't make sense (always works in one sense and always depends
+on the text to convert in the other).
+
+
 \membersection{wxEncodingConverter::Convert}\label{wxencodingconverterconvert}
 
-\func{void}{Convert}{\param{const char* }{input}, \param{char* }{output}}
+\constfunc{bool}{Convert}{\param{const char* }{input}, \param{char* }{output}}
 
-\func{void}{Convert}{\param{const wchar\_t* }{input}, \param{wchar\_t* }{output}}
+\constfunc{bool}{Convert}{\param{const wchar\_t* }{input}, \param{wchar\_t* }{output}}
 
-\func{void}{Convert}{\param{const char* }{input}, \param{wchar\_t* }{output}}
+\constfunc{bool}{Convert}{\param{const char* }{input}, \param{wchar\_t* }{output}}
 
-\func{void}{Convert}{\param{const wchar\_t* }{input}, \param{char* }{output}}
+\constfunc{bool}{Convert}{\param{const wchar\_t* }{input}, \param{char* }{output}}
 
 Convert input string according to settings passed to
 \helpref{Init}{wxencodingconverterinit} and writes the result to {\it output}.
 
-\func{void}{Convert}{\param{char* }{str}}
+\constfunc{bool}{Convert}{\param{char* }{str}}
 
-\func{void}{Convert}{\param{wchar\_t* }{str}}
+\constfunc{bool}{Convert}{\param{wchar\_t* }{str}}
 
 Convert input string according to settings passed to
 \helpref{Init}{wxencodingconverterinit} in-place, i.e. write the result to the
 same memory area.
 
-\func{wxString}{Convert}{\param{const wxString\& }{input}}
+All of the versions above return \true if the conversion was lossless and
+\false if at least one of the characters couldn't be converted and was replaced
+with {\tt '?'} in the output. Note that if {\tt wxCONVERT\_SUBSTITUTE} was
+passed to \helpref{Init}{wxencodingconverterinit}, substitution is considered
+lossless operation.
+
+\constfunc{wxString}{Convert}{\param{const wxString\& }{input}}
 
 Convert wxString and return new wxString object.
 
@@ -95,9 +127,10 @@ Convert wxString and return new wxString object.
 
 You must call \helpref{Init}{wxencodingconverterinit} before using this method!
 
-{\tt wchar\_t} versions of the method are not available if wxWindows was compiled
+{\tt wchar\_t} versions of the method are not available if wxWidgets was compiled
 with {\tt wxUSE\_WCHAR\_T} set to 0.
 
+
 \membersection{wxEncodingConverter::GetPlatformEquivalents}\label{wxencodingconvertergetplatformequivalents}
 
 \func{static wxFontEncodingArray}{GetPlatformEquivalents}{\param{wxFontEncoding }{enc}, \param{int }{platform = wxPLATFORM\_CURRENT}}
@@ -151,6 +184,7 @@ item of it.
 \item Please note that the returned array may contain no items at all.
 \end{itemize}
 
+
 \membersection{wxEncodingConverter::GetAllEquivalents}\label{wxencodingconvertergetallequivalents}
 
 \func{static wxFontEncodingArray}{GetAllEquivalents}{\param{wxFontEncoding }{enc}}