+ // void Printf(const wxString& format, ...) = 0;
+ WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
+ DoPrintfWchar, DoPrintfUtf8)
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
+ (wxFormatString(f1)));
+ WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxCStrData&),
+ (wxFormatString(f1)));
+ WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
+ (wxFormatString(f1)));
+ WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wchar_t*),
+ (wxFormatString(f1)));
+#endif
+
+ // called by DoPrintf() to output formatted string but can also be called
+ // directly if no formatting is needed
+ virtual void Output(const wxString& str) = 0;
+
+protected:
+ // NB: this is pure virtual so that it can be implemented in dllexported
+ // wxMessagOutput class
+#if !wxUSE_UTF8_LOCALE_ONLY
+ virtual void DoPrintfWchar(const wxChar *format, ...) = 0;
+#endif
+#if wxUSE_UNICODE_UTF8
+ virtual void DoPrintfUtf8(const char *format, ...) = 0;
+#endif
+};
+
+#ifdef __VISUALC__
+ // "non dll-interface class 'wxStringPrintfMixin' used as base interface
+ // for dll-interface class 'wxString'" -- this is OK in our case
+ #pragma warning (push)
+ #pragma warning (disable:4275)
+#endif