Added compile-time check to be sure that wxUSE_ODBC is set to 1 before attempting to compile this program, and error out telling the user to change the setting if they want to compile this program

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10212 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

demos/dbbrowse/browsedb.cpp

@@ -34,6 +34,10 @@
 // - darf nur einmal im Projekte definiert werden ?? Extra Databasse Klasse ?
 wxDbConnectInf DbConnectInf;		// F<>r DBase
 
+#if wxUSE_ODBC
+  #error Demo cannot be compiled unless setup.h has wxUSE_ODBC set to 1
+#endif
+
 //----------------------------------------------------------------------------------------
 extern WXDLLEXPORT_DATA(wxDbList*) PtrBegDbList;	/* from db.cpp, used in getting back error results from db connections */