From e7fc08fd0e093c2f7ac16ccbbb7e541eab4f8c30 Mon Sep 17 00:00:00 2001
From: Jinhao <cnjinhao@hotmail.com>
Date: Sun, 9 Aug 2015 07:37:53 +0800
Subject: [PATCH] fix no implementation of image_png::open interface

---
 source/paint/detail/image_png.hpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/source/paint/detail/image_png.hpp b/source/paint/detail/image_png.hpp
index cab432cd..eda096e7 100644
--- a/source/paint/detail/image_png.hpp
+++ b/source/paint/detail/image_png.hpp
@@ -21,10 +21,6 @@ namespace nana
 			: public image::image_impl_interface
 		{
 		public:
-			image_png()
-			{
-			}
-
 			bool open(const nana::char_t* png_file) override
 			{
 #ifdef NANA_UNICODE
@@ -148,6 +144,12 @@ namespace nana
 				return is_opened;
 			}
 
+			bool open(const void* data, std::size_t bytes) override
+			{
+				throw std::logic_error("PNG is not supported for raw data buffer");
+				return false;
+			}
+
 			bool alpha_channel() const override
 			{
 				return pixbuf_.alpha_channel();