diff --git a/demos/chartthemes/main.cpp b/demos/chartthemes/main.cpp
index 5b605eb..6894c48 100644
--- a/demos/chartthemes/main.cpp
+++ b/demos/chartthemes/main.cpp
@@ -4,6 +4,8 @@
 #include <qchartview.h>
 #include <qpieseries.h>
 #include <qpieslice.h>
+#include <qbarseries.h>
+#include <qbarset.h>
 #include <QGridLayout>
 #include <QFormLayout>
 #include <QComboBox>
@@ -38,7 +40,7 @@ public:
         // generate random data
         int listCount = 3;
         int valueMax = 100;
-        int valueCount = 50;
+        int valueCount = 21;
         for (int i(0); i < listCount; i++) {
             DataList dataList;
             for (int j(0); j < valueCount; j++) {
@@ -85,6 +87,20 @@ public:
         chart->setChartTitle("bar chart");
         chart->setRenderHint(QPainter::Antialiasing);
         baseLayout->addWidget(chart, 1, 1);
+        {
+            QStringList categories;
+            // TODO: categories
+            for (int i(0); i < valueCount; i++)
+                categories << QString::number(i);
+            QBarSeries* series = new QBarSeries(categories, chart);
+            for (int i(0); i < m_dataTable.count(); i++) {
+                QBarSet *set = new QBarSet("Set" + QString::number(i));
+                foreach (Data data, m_dataTable[i])
+                    *set << data.first.y();
+                series->addBarSet(set);
+            }
+            chart->addSeries(series);
+        }
         m_charts << chart;
 
         // line chart
diff --git a/src/barchart/bar.cpp b/src/barchart/bar.cpp
index ebc873e..34fff83 100644
--- a/src/barchart/bar.cpp
+++ b/src/barchart/bar.cpp
@@ -6,8 +6,12 @@
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 Bar::Bar(QString category, QGraphicsItem *parent)
-    : QGraphicsObject(parent)
-    ,mCategory(category)
+    : QGraphicsObject(parent),
+    mCategory(category),
+    mXpos(0),
+    mYpos(0),
+    mWidth(0),
+    mHeight(0)
 {
     setAcceptedMouseButtons(Qt::LeftButton|Qt::RightButton);
     setAcceptHoverEvents(true);
diff --git a/src/barchart/barpresenterbase.cpp b/src/barchart/barpresenterbase.cpp
index 225c5d2..86e0edc 100644
--- a/src/barchart/barpresenterbase.cpp
+++ b/src/barchart/barpresenterbase.cpp
@@ -12,11 +12,13 @@
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
-BarPresenterBase::BarPresenterBase(QBarSeries *series, QChart *parent)
-    : ChartItem(parent)
-    ,mLayoutSet(false)
-    ,mSeries(series)
-    ,mChart(parent)
+BarPresenterBase::BarPresenterBase(QBarSeries *series, QChart *parent) :
+    ChartItem(parent),
+    mLayoutSet(false),
+    mSeries(series),
+    mChart(parent),
+    mWidth(0),
+    mHeight(0)
 {
     connect(series,SIGNAL(showToolTip(QPoint,QString)),this,SLOT(showToolTip(QPoint,QString)));
     connect(series,SIGNAL(enableSeparators(bool)),this,SLOT(enableSeparators(bool)));
@@ -44,7 +46,7 @@ void BarPresenterBase::paint(QPainter *painter, const QStyleOptionGraphicsItem *
 
 QRectF BarPresenterBase::boundingRect() const
 {
-    return QRectF(0,0,mWidth,mHeight);
+    return QRectF(0, 0, mWidth, mHeight);
 }
 
 void BarPresenterBase::dataChanged()
diff --git a/src/barchart/barvalue.cpp b/src/barchart/barvalue.cpp
index dbe83fc..9cebf3e 100644
--- a/src/barchart/barvalue.cpp
+++ b/src/barchart/barvalue.cpp
@@ -5,8 +5,12 @@
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 BarValue::BarValue(QBarSet &set, QGraphicsItem *parent)
-    : QGraphicsObject(parent)
-    ,mBarSet(set)
+    : QGraphicsObject(parent),
+    mBarSet(set),
+    mXpos(0),
+    mYpos(0),
+    mWidth(0),
+    mHeight(0)
 {
     setVisible(false);
 }