X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fpbd%2Fpbd%2Fenumwriter.h;h=634767e7f263b2b4219213d2abce18a3ad761ff3;hb=59822e8dd273df9ec80051b4f3be83dfec39c809;hp=a253719c85f9b44f18cd8c876ba85c797814f215;hpb=ded4a143db069785aa33eeb6dc9da02770e3ae8e;p=ardour.git

diff --git a/libs/pbd/pbd/enumwriter.h b/libs/pbd/pbd/enumwriter.h
index a253719c85..634767e7f2 100644
--- a/libs/pbd/pbd/enumwriter.h
+++ b/libs/pbd/pbd/enumwriter.h
@@ -25,18 +25,34 @@
 #include <string>
 #include <vector>
 #include <exception>
+#include <sstream>
 
+#include "pbd/libpbd_visibility.h"
 
 namespace PBD {
 
-class unknown_enumeration : public std::exception {
+class LIBPBD_API unknown_enumeration : public std::exception {
   public:
-	virtual const char *what() const throw() { return "unknown enumerator in PBD::EnumWriter"; }
+	unknown_enumeration (std::string const & e) throw() {
+		std::stringstream s;
+		s << "unknown enumerator " << e << " in PBD::EnumWriter";
+		_message = s.str ();
+	}
+
+	~unknown_enumeration () throw() {}
+	
+	virtual const char *what() const throw() {
+		return _message.c_str();
+	}
+
+private:
+	std::string _message;
 };
 
-class EnumWriter {
+class LIBPBD_API EnumWriter {
   public:
 	static EnumWriter& instance();
+	static void destroy();
 
 	void register_distinct (std::string type, std::vector<int>, std::vector<std::string>);
 	void register_bits     (std::string type, std::vector<int>, std::vector<std::string>);