Copying the contents of a wxString

[chris elliott]

You may find some of the docs helpful; for example
http://biolpc22.york.ac.uk/wx/docs/html/wx/wx_unicode.html#unicode
says::

To get an 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 c_str() returns a pointer to the internal representation which 
is either ASCII or Unicode). More rarely used, but still useful, is 
wc_str() function which always returns the Unicode string.

chris

Michiel.Salters at tomtom.com wrote:
> Peter Gordon wrote:
>> I need to copy the contents of a wxString to a separate, non-wxString
>> buffer.
> 
> Do you need to add a \0? wxString is a C++ class and doesn't need one,
> but C "strings" do need them.
> 
>> The pointer is wxString::c_str(), but what is the length that needs to
>> be copied assuming that I am using Unicode? Do I need to take
>> wxString::Len(),
>> wxString::Len() * sizeof(w_char),
>> wxString::Len() * sizeof(w_char) + 1,
>> or what?
> 
> The first two could be correct. ::Len gives you the number of wchar_t's
> (in the unicode case). ::Len() * sizeof(w_char) gives you the number of
> bytes. However, it's more portable to use * sizeof(wxString[0]).
> 
> The third looks like you copy to a C-string buffer, except that you
> need to
> add sizeof(wchar_t), not 1 as a wchar_t[] string is terminated with
> L'\0'.
> You could also write (wxString::Len() +1) * sizeof(wchar_t).
> 
> HTH,
> Michiel Salters
> 
> 
> 
> 
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