#include "generic/constant.h"
#include "generic/callback.h"
-typedef Callback1<const char*> StringImportCallback;
-typedef Callback1<const StringImportCallback&> StringExportCallback;
+typedef Callback<void(const char*)> StringImportCallback;
+typedef Callback<void(const StringImportCallback&)> StringExportCallback;
class PreferenceSystem
{