+#ifdef __WXUNIVERSAL__
+ #define USE_WXUNIVERSAL 1
+#else
+ #define USE_WXUNIVERSAL 0
+#endif
+
+#ifdef WXUSINGDLL
+ #define USE_DLL 1
+#else
+ #define USE_DLL 0
+#endif
+
+#if defined(__WXMSW__) && !defined(__WXWINCE__)
+ #define USE_WXMSW 1
+#else
+ #define USE_WXMSW 0
+#endif
+
+#ifdef __WXMAC__
+ #define USE_WXMAC 1
+#else
+ #define USE_WXMAC 0
+#endif
+
+#ifdef __WXGTK__
+ #define USE_WXGTK 1
+#else
+ #define USE_WXGTK 0
+#endif
+
+#ifdef __WXPM__
+ #define USE_WXPM 1
+#else
+ #define USE_WXPM 0
+#endif
+
+#define USE_GENERIC_DIALOGS \
+ (((USE_WXMSW && wxUSE_GENERIC_DIALOGS_IN_MSW) || \
+ USE_WXMAC) && \
+ !USE_WXUNIVERSAL)
+
+#define USE_COLOURDLG_GENERIC (USE_GENERIC_DIALOGS && wxUSE_COLOURDLG)
+#define USE_DIRDLG_GENERIC (USE_GENERIC_DIALOGS && wxUSE_DIRDLG)
+#define USE_FILEDLG_GENERIC (USE_GENERIC_DIALOGS && wxUSE_FILEDLG)
+#define USE_FONTDLG_GENERIC (USE_GENERIC_DIALOGS && wxUSE_FONTDLG)
+
+// VZ: what is this for?
+#define USE_MODAL_PRESENTATION \
+ ( \
+ USE_WXMSW || \
+ USE_WXMAC || \
+ USE_WXGTK || \
+ USE_WXPM \
+ )
+