+// these two helper classes are used to find wxFormatString argument among fixed
+// arguments passed to a vararg template
+struct wxFormatStringArgument
+{
+ wxFormatStringArgument(const wxFormatString *s = NULL) : m_str(s) {}
+ const wxFormatString *m_str;
+
+ // overriding this operator allows us to reuse _WX_VARARG_JOIN macro
+ wxFormatStringArgument operator,(const wxFormatStringArgument& a) const
+ {
+ wxASSERT_MSG( m_str == NULL || a.m_str == NULL,
+ "can't have two format strings in vararg function" );
+ return wxFormatStringArgument(m_str ? m_str : a.m_str);
+ }
+
+ operator const wxFormatString*() const { return m_str; }
+};
+
+template<typename T>
+struct wxFormatStringArgumentFinder
+{
+ static wxFormatStringArgument find(T)
+ {
+ // by default, arguments are not format strings, so return "not found"
+ return wxFormatStringArgument();
+ }
+};
+
+template<>
+struct wxFormatStringArgumentFinder<const wxFormatString&>
+{
+ static wxFormatStringArgument find(const wxFormatString& arg)
+ { return wxFormatStringArgument(&arg); }
+};
+
+template<>
+struct wxFormatStringArgumentFinder<wxFormatString>
+ : public wxFormatStringArgumentFinder<const wxFormatString&> {};
+
+// avoid passing big objects by value to wxFormatStringArgumentFinder::find()
+// (and especially wx[W]CharBuffer with its auto_ptr<> style semantics!):
+template<>
+struct wxFormatStringArgumentFinder<wxString>
+ : public wxFormatStringArgumentFinder<const wxString&> {};
+
+template<>
+struct wxFormatStringArgumentFinder<wxScopedCharBuffer>
+ : public wxFormatStringArgumentFinder<const wxScopedCharBuffer&> {};
+
+template<>
+struct wxFormatStringArgumentFinder<wxScopedWCharBuffer>
+ : public wxFormatStringArgumentFinder<const wxScopedWCharBuffer&> {};
+
+template<>
+struct wxFormatStringArgumentFinder<wxCharBuffer>
+ : public wxFormatStringArgumentFinder<const wxCharBuffer&> {};
+
+template<>
+struct wxFormatStringArgumentFinder<wxWCharBuffer>
+ : public wxFormatStringArgumentFinder<const wxWCharBuffer&> {};
+
+