diff --git a/examples/xlsx/chart/main.cpp b/examples/xlsx/chart/main.cpp
index b609d6d..d1ad599 100644
--- a/examples/xlsx/chart/main.cpp
+++ b/examples/xlsx/chart/main.cpp
@@ -1,7 +1,7 @@
 #include <QtCore>
 #include "xlsxdocument.h"
+#include "xlsxcellrange.h"
 #include "xlsxchart.h"
-#include "xlsxworksheet.h"
 
 using namespace QXlsx;
 
@@ -9,21 +9,27 @@ int main()
 {
     //![0]
     Document xlsx;
-
-    Worksheet *sheet = xlsx.currentWorksheet();
     for (int i=1; i<10; ++i)
-        sheet->write(i, 1, i*i);
+        xlsx.write(i, 1, i*i);
     //![0]
 
     //![1]
-    Chart *pieChart = sheet->insertChart(3, 3, QSize(300, 300));
+    Chart *pieChart = xlsx.insertChart(3, 3, QSize(300, 300));
     pieChart->setChartType(Chart::CT_Pie);
     pieChart->addSeries(CellRange("A1:A9"));
 
-    Chart *barChart = sheet->insertChart(6, 6, QSize(300, 300));
+    Chart *pie3DChart = xlsx.insertChart(3, 7, QSize(300, 300));
+    pie3DChart->setChartType(Chart::CT_Pie3D);
+    pie3DChart->addSeries(CellRange("A1:A9"));
+
+    Chart *barChart = xlsx.insertChart(23, 3, QSize(300, 300));
     barChart->setChartType(Chart::CT_Bar);
     barChart->addSeries(CellRange("A1:A9"));
 
+    Chart *bar3DChart = xlsx.insertChart(23, 7, QSize(300, 300));
+    bar3DChart->setChartType(Chart::CT_Bar3D);
+    bar3DChart->addSeries(CellRange("A1:A9"));
+
     //![1]
 
     //![2]
diff --git a/src/xlsx/xlsxchart.cpp b/src/xlsx/xlsxchart.cpp
index 130e89b..ce0c80d 100644
--- a/src/xlsx/xlsxchart.cpp
+++ b/src/xlsx/xlsxchart.cpp
@@ -35,7 +35,7 @@
 QT_BEGIN_NAMESPACE_XLSX
 
 ChartPrivate::ChartPrivate(Chart *q)
-    :OOXmlFilePrivate(q)
+    :OOXmlFilePrivate(q), chartType(static_cast<Chart::ChartType>(0))
 {
 
 }
@@ -184,8 +184,9 @@ bool ChartPrivate::loadXmlXxxChart(QXmlStreamReader &reader)
 {
     QStringRef name = reader.name();
     if (name == QLatin1String("pieChart")) chartType = Chart::CT_Pie;
+    else if (name == QLatin1String("pie3DChart")) chartType = Chart::CT_Pie3D;
     else if (name == QLatin1String("barChart")) chartType = Chart::CT_Bar;
-
+    else if (name == QLatin1String("bar3DChart")) chartType = Chart::CT_Bar3D;
 
     while (!reader.atEnd()) {
         reader.readNextStartElement();
@@ -242,7 +243,9 @@ void ChartPrivate::saveXmlXxxChart(QXmlStreamWriter &writer) const
     QString t;
     switch (chartType) {
     case Chart::CT_Pie: t = QStringLiteral("c:pieChart"); break;
+    case Chart::CT_Pie3D: t = QStringLiteral("c:pie3DChart"); break;
     case Chart::CT_Bar: t = QStringLiteral("c:barChart"); break;
+    case Chart::CT_Bar3D: t = QStringLiteral("c:bar3DChart"); break;
     default: break;
     }
 
@@ -253,18 +256,23 @@ void ChartPrivate::saveXmlXxxChart(QXmlStreamWriter &writer) const
         writer.writeAttribute(QStringLiteral("val"), QStringLiteral("col"));
     }
 
-    writer.writeEmptyElement(QStringLiteral("c:varyColors"));
-    writer.writeAttribute(QStringLiteral("val"), QStringLiteral("1"));
+    if (chartType==Chart::CT_Pie || chartType==Chart::CT_Pie3D) {
+        //Do the same behavior as Excel, Pie prefer varyColors
+        writer.writeEmptyElement(QStringLiteral("c:varyColors"));
+        writer.writeAttribute(QStringLiteral("val"), QStringLiteral("1"));
+    }
+
     for (int i=0; i<seriesList.size(); ++i)
         saveXmlSer(writer, seriesList[i].data(), i);
 
-    if (chartType == Chart::CT_Bar) {
+    if (chartType == Chart::CT_Bar || chartType==Chart::CT_Bar3D) {
         if (axisList.isEmpty()) {
             const_cast<ChartPrivate*>(this)->axisList.append(QSharedPointer<XlsxAxis>(new XlsxAxis(XlsxAxis::T_Cat, XlsxAxis::Left)));
             const_cast<ChartPrivate*>(this)->axisList.append(QSharedPointer<XlsxAxis>(new XlsxAxis(XlsxAxis::T_Val, XlsxAxis::Bottom)));
         }
 
-        Q_ASSERT(axisList.size()==2);
+        Q_ASSERT(axisList.size()==2 || (axisList.size()==3 && chartType==Chart::CT_Bar3D));
+
         for (int i=0; i<axisList.size(); ++i) {
             writer.writeEmptyElement(QStringLiteral("c:axId"));
             writer.writeAttribute(QStringLiteral("val"), QString::number(i+1));
diff --git a/src/xlsx/xlsxchart.h b/src/xlsx/xlsxchart.h
index 18ea3ba..8cc886d 100644
--- a/src/xlsx/xlsxchart.h
+++ b/src/xlsx/xlsxchart.h
@@ -46,7 +46,7 @@ class Q_XLSX_EXPORT Chart : public OOXmlFile
 
 public:
     enum ChartType {
-        CT_Area,
+        CT_Area = 1, //Zero is internally used for unknown types
         CT_Area3D,
         CT_Line,
         CT_Line3D,