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diff --git a/ext/Log4Qt/src/mainthreadappender.cpp b/ext/Log4Qt/src/mainthreadappender.cpp
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+++ b/ext/Log4Qt/src/mainthreadappender.cpp
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+/******************************************************************************
+ *
+ * package:     Log4Qt
+ * file:        mainthreadappender.cpp
+ * created:     February 2011
+ * author:      Andreas Bacher
+ *
+ *
+ * Copyright 2011 Andreas Bacher
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ * Dependencies
+ ******************************************************************************/
+
+#include "mainthreadappender.h"
+#include "loggingevent.h"
+#include "helpers/dispatcher.h"
+
+#include <QtCore/QDebug>
+#include <QtCore/QCoreApplication>
+#include <QtCore/QReadLocker>
+
+namespace Log4Qt
+{
+
+/**************************************************************************
+ * Declarations
+ **************************************************************************/
+
+
+/**************************************************************************
+ * C helper functions
+ **************************************************************************/
+
+
+/**************************************************************************
+ * Class implementation: MainThreadAppender
+ **************************************************************************/
+
+
+MainThreadAppender::MainThreadAppender(QObject *parent) : AppenderSkeleton(parent)
+{}
+
+MainThreadAppender::~MainThreadAppender()
+{
+    close();
+}
+
+bool MainThreadAppender::requiresLayout() const
+{
+    return false;
+}
+
+void MainThreadAppender::activateOptions()
+{
+}
+
+void MainThreadAppender::close()
+{
+}
+
+void MainThreadAppender::append(const LoggingEvent &rEvent)
+{
+    QReadLocker locker(&mAppenderGuard);
+
+    Appender *pAppender;
+    Q_FOREACH(pAppender, mAppenders)
+    {
+        if (QThread::currentThread() != qApp->thread())
+        {
+            LoggingEvent *event = new LoggingEvent(rEvent);
+            qApp->postEvent(pAppender, event);
+
+        }
+        else
+            pAppender->doAppend(rEvent);
+    }
+}
+
+bool MainThreadAppender::checkEntryConditions() const
+{
+    return AppenderSkeleton::checkEntryConditions();
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+/*!
+ * Writes all object member variables to the given debug stream
+ * \a rDebug and returns the stream.
+ *
+ * <tt>
+ * %MainThreadAppender(name:"WA" )
+ * </tt>
+ * \sa QDebug, operator<<(QDebug debug, const LogObject &rLogObject	)
+ */
+QDebug MainThreadAppender::debug(QDebug &rDebug) const
+{
+    rDebug.nospace() << "MainThreadAppender("
+        << "name:" << name() << " "
+        << ")";
+
+    return rDebug.space();
+}
+#endif // QT_NO_DEBUG_STREAM
+
+
+/**************************************************************************
+ * Implementation: Operators, Helper
+ **************************************************************************/
+
+} // namespace Log4Qt
+