diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -135,6 +135,7 @@ add_executable(${PROGRAM_NAME} WIN32
   src/framedreadersettings.cpp
   src/plotmanager.cpp
   src/barplot.cpp
+  src/barchart.cpp
   src/numberformat.cpp
   src/updatechecker.cpp
   src/versionnumber.cpp
diff --git a/src/barchart.cpp b/src/barchart.cpp
new file mode 100644
--- /dev/null
+++ b/src/barchart.cpp
@@ -0,0 +1,63 @@
+/*
+  Copyright © 2017 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <QPalette>
+
+#include "barchart.h"
+
+BarChart::BarChart(ChannelManager* channelMan)
+{
+    _channelMan = channelMan;
+}
+
+void BarChart::resample()
+{
+    setSamples(chartData());
+}
+
+QVector<double> BarChart::chartData() const
+{
+    unsigned numChannels = _channelMan->numOfChannels();
+    unsigned numOfSamples = _channelMan->numOfSamples();
+    QVector<double> data(numChannels);
+    for (unsigned i = 0; i < numChannels; i++)
+    {
+        data[i] = _channelMan->channelBuffer(i)->sample(numOfSamples-1);
+    }
+    return data;
+}
+
+QwtColumnSymbol* BarChart::specialSymbol(int sampleIndex, const QPointF& sample) const
+{
+    unsigned numChannels = _channelMan->numOfChannels();
+    if (sampleIndex < 0 || sampleIndex > (int) numChannels)
+    {
+        return NULL;
+    }
+
+    auto info = _channelMan->infoModel();
+    auto color = info->color(sampleIndex);
+
+    QwtColumnSymbol* symbol = new QwtColumnSymbol(QwtColumnSymbol::Box);
+    symbol->setLineWidth(1);
+    symbol->setFrameStyle(QwtColumnSymbol::Plain);
+    symbol->setPalette(QPalette(color));
+
+    return symbol;
+}
diff --git a/src/barchart.h b/src/barchart.h
new file mode 100644
--- /dev/null
+++ b/src/barchart.h
@@ -0,0 +1,42 @@
+/*
+  Copyright © 2017 Hasan Yavuz Özderya
+
+  This file is part of serialplot.
+
+  serialplot is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  serialplot is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef BARCHART_H
+#define BARCHART_H
+
+#include <qwt_plot_barchart.h>
+#include <qwt_column_symbol.h>
+#include "channelmanager.h"
+
+class BarChart : public QwtPlotBarChart
+{
+public:
+    explicit BarChart(ChannelManager* channelMan);
+
+    void resample();
+    QwtColumnSymbol* specialSymbol(int sampleIndex, const QPointF&) const;
+
+private:
+    ChannelManager* _channelMan;
+
+    QVector<double> chartData() const;
+};
+
+
+#endif // BARCHART_H
diff --git a/src/barplot.cpp b/src/barplot.cpp
--- a/src/barplot.cpp
+++ b/src/barplot.cpp
@@ -20,26 +20,14 @@
 #include "barplot.h"
 
 BarPlot::BarPlot(ChannelManager* channelMan, QWidget* parent) :
-    QwtPlot(parent)
+    QwtPlot(parent), barChart(channelMan)
 {
     _channelMan = channelMan;
     barChart.attach(this);
 
     connect(_channelMan, &ChannelManager::dataAdded, [this]()
             {
-                barChart.setSamples(chartData());
+                barChart.resample();
                 replot();
             });
 }
-
-QVector<double> BarPlot::chartData() const
-{
-    unsigned numChannels = _channelMan->numOfChannels();
-    unsigned numOfSamples = _channelMan->numOfSamples();
-    QVector<double> data(numChannels);
-    for (int i = 0; i < numChannels; i++)
-    {
-        data[i] = _channelMan->channelBuffer(i)->sample(numOfSamples-1);
-    }
-    return data;
-}
diff --git a/src/barplot.h b/src/barplot.h
--- a/src/barplot.h
+++ b/src/barplot.h
@@ -21,9 +21,9 @@
 #define BARPLOT_H
 
 #include <qwt_plot.h>
-#include <qwt_plot_barchart.h>
 
 #include "channelmanager.h"
+#include "barchart.h"
 
 class BarPlot : public QwtPlot
 {
@@ -33,8 +33,8 @@ public:
     explicit BarPlot(ChannelManager* channelMan, QWidget* parent = 0);
 
 private:
-    QwtPlotBarChart barChart;
     ChannelManager* _channelMan;
+    BarChart barChart;
 
     QVector<double> chartData() const;
 };
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -60,10 +60,10 @@ MainWindow::MainWindow(QWidget *parent) 
     aboutDialog(this),
     portControl(&serialPort),
     channelMan(1, 1, this),
+    barPlot(&channelMan),
     snapshotMan(this, &channelMan),
     commandPanel(&serialPort),
     dataFormatPanel(&serialPort, &channelMan, &recorder),
-    barPlot(&channelMan),
     recordPanel(&recorder, &channelMan),
     updateCheckDialog(this)
 {