--- a/Core/FileFormats/PngReader.h	Thu Oct 17 14:21:50 2013 +0200
+++ b/Core/FileFormats/PngReader.h	Wed Apr 16 16:04:55 2014 +0200
@@ -1,6 +1,6 @@
 /**
  * Orthanc - A Lightweight, RESTful DICOM Store
- * Copyright (C) 2012-2013 Medical Physics Department, CHU of Liege,
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
  * Belgium
  *
  * This program is free software: you can redistribute it and/or
@@ -96,6 +96,11 @@
 
     void ReadFromFile(const char* filename);
 
+    void ReadFromFile(const std::string& filename)
+    {
+      ReadFromFile(filename.c_str());
+    }
+
     void ReadFromMemory(const void* buffer,
                         size_t size);