+ wxASSERT_MSG( !(style & wxNO_DEFAULT) || (style & wxNO),
+ "wxNO_DEFAULT is invalid without wxNO" );
+
+ wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || (style & wxCANCEL),
+ "wxCANCEL_DEFAULT is invalid without wxCANCEL" );
+
+ wxASSERT_MSG( !(style & wxCANCEL_DEFAULT) || !(style & wxNO_DEFAULT),
+ "only one default button can be specified" );
+