}
#endif // wxUSE_STRING_POS_CACHE
- // even if we're not built with wxUSE_STL == 1 it is very convenient to allow
- // implicit conversions from std::string to wxString and vice verse as this
- // allows to use the same strings in non-GUI and GUI code, however we don't
- // want to unconditionally add this ctor as it would make wx lib dependent on
- // libstdc++ on some Linux versions which is bad, so instead we ask the
- // client code to define this wxUSE_STD_STRING symbol if they need it
+ // even if we're not built with wxUSE_STD_STRING_CONV_IN_WXSTRING == 1 it is
+ // very convenient to allow implicit conversions from std::string to wxString
+ // and vice verse as this allows to use the same strings in non-GUI and GUI
+ // code, however we don't want to unconditionally add this ctor as it would
+ // make wx lib dependent on libstdc++ on some Linux versions which is bad, so
+ // instead we ask the client code to define this wxUSE_STD_STRING symbol if
+ // they need it
#if wxUSE_STD_STRING
#if wxUSE_UNICODE_WCHAR
wxString(const wxStdWideString& str) : m_impl(str) {}
#endif
#endif // wxUSE_STD_STRING
- // Unlike ctor from std::string, we provide conversion to std::string only
- // if wxUSE_STL and not merely wxUSE_STD_STRING (which is on by default),
- // because it conflicts with operator const char/wchar_t* but we still
- // provide explicit conversions to std::[w]string for convenience in any case
+ // Also always provide explicit conversions to std::[w]string in any case,
+ // see below for the implicit ones.
#if wxUSE_STD_STRING
// We can avoid a copy if we already use this string type internally,
// otherwise we create a copy on the fly:
}
#endif
-#if wxUSE_STL
- // In wxUSE_STL case we also provide implicit conversions as there is no
- // ambiguity with the const char/wchar_t* ones as they are disabled in this
- // build (for consistency with std::basic_string<>)
+#if wxUSE_STD_STRING_CONV_IN_WXSTRING
+ // Implicit conversions to std::[w]string are not provided by default as
+ // they conflict with the implicit conversions to "const char/wchar_t *"
+ // which we use for backwards compatibility but do provide them if
+ // explicitly requested.
operator wxStringToStdStringRetType() const { return ToStdString(); }
operator wxStringToStdWstringRetType() const { return ToStdWstring(); }
-#endif // wxUSE_STL
+#endif // wxUSE_STD_STRING_CONV_IN_WXSTRING
#undef wxStringToStdStringRetType
#undef wxStringToStdWstringRetType
operator wxCStrData() const { return c_str(); }
// the first two operators conflict with operators for conversion to
- // std::string and they must be disabled in STL build; the next one only
- // makes sense if conversions to char* are also defined and not defining it
- // in STL build also helps us to get more clear error messages for the code
- // which relies on implicit conversion to char* in STL build
-#if !wxUSE_STL
+ // std::string and they must be disabled if those conversions are enabled;
+ // the next one only makes sense if conversions to char* are also defined
+ // and not defining it in STL build also helps us to get more clear error
+ // messages for the code which relies on implicit conversion to char* in
+ // STL build
+#if !wxUSE_STD_STRING_CONV_IN_WXSTRING
operator const char*() const { return c_str(); }
operator const wchar_t*() const { return c_str(); }
// wxWidgets versions: this is the same as conversion to const char * so it
// may fail!
operator const void*() const { return c_str(); }
-#endif // wxUSE_STL
+#endif // !wxUSE_STD_STRING_CONV_IN_WXSTRING
// identical to c_str(), for MFC compatibility
const wxCStrData GetData() const { return c_str(); }
// convert to a double
bool ToCDouble(double *val) const;
- // create a string representing the given floating point number
+ // create a string representing the given floating point number with the
+ // default (like %g) or fixed (if precision >=0) precision
// in the current locale
- static wxString FromDouble(double val)
- { return wxString::Format(wxS("%g"), val); }
+ static wxString FromDouble(double val, int precision = -1);
// in C locale
- static wxString FromCDouble(double val);
+ static wxString FromCDouble(double val, int precision = -1);
#ifndef wxNEEDS_WXSTRING_PRINTF_MIXIN
// formatted input/output