public:
bool OnInit()
{
+#if wxUSE_ARTPROVIDER_STD
wxArtProvider::InitStdProvider();
+#endif // wxUSE_ARTPROVIDER_STD
+#if wxUSE_ARTPROVIDER_TANGO
+ wxArtProvider::InitTangoProvider();
+#endif // wxUSE_ARTPROVIDER_TANGO
wxArtProvider::InitNativeProvider();
return true;
}