add front demo in this project

LFtid1056/cloudfront/code/log4cplus/win32debugappender.h

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+// -*- C++ -*-
+// Module:  Log4CPLUS
+// File:    win32debugappender.h
+// Created: 12/2003
+// Author:  Eduardo Francos, Odalio SARL
+//
+//
+// Copyright 2003-2017 Odalio SARL
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/** @file */
+
+#ifndef LOG4CPLUS_WIN32DEBUG_APPENDER_HEADER_
+#define LOG4CPLUS_WIN32DEBUG_APPENDER_HEADER_
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#if defined (LOG4CPLUS_HAVE_OUTPUTDEBUGSTRING) 
+
+#include <log4cplus/appender.h>
+
+
+namespace log4cplus {
+
+    /**
+     * Prints log events using OutputDebugString(). 
+     */
+    class LOG4CPLUS_EXPORT Win32DebugAppender
+        : public Appender
+    {
+    public:
+      // Ctors
+        Win32DebugAppender();
+        Win32DebugAppender(const log4cplus::helpers::Properties& properties);
+
+      // Dtor
+        virtual ~Win32DebugAppender();
+
+      // Methods
+        virtual void close();
+
+    protected:
+        virtual void append(const log4cplus::spi::InternalLoggingEvent& event);
+
+    private:
+      // Disallow copying of instances of this class
+        Win32DebugAppender(const Win32DebugAppender&);
+        Win32DebugAppender& operator=(const Win32DebugAppender&);
+    };
+
+} // end namespace log4cplus
+
+#endif // LOG4CPLUS_HAVE_OUTPUTDEBUGSTRING
+#endif // LOG4CPLUS_WIN32DEBUG_APPENDER_HEADER_