diff --git a/src/legendmarker.cpp b/src/legendmarker.cpp
index d4dfe98..30189e8 100644
--- a/src/legendmarker.cpp
+++ b/src/legendmarker.cpp
@@ -10,87 +10,87 @@
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 LegendMarker::LegendMarker(QSeries *series, QGraphicsItem *parent) : QGraphicsObject(parent),
-    mPos(0,0),
-    mSize(0,0),
-    mBoundingRect(0,0,0,0),
-    mMarkerBoundingRect(0,0,0,0),
-    mSeries(series),
-    mBarset(0),
-    mPieslice(0),
-    mType(LegendMarkerTypeSeries),
-    mTextItem(new QGraphicsSimpleTextItem(this))
+    m_pos(0,0),
+    m_size(0,0),
+    m_boundingRect(0,0,0,0),
+    m_markerBoundingRect(0,0,0,0),
+    m_series(series),
+    m_barset(0),
+    m_pieslice(0),
+    m_type(LegendMarkerTypeSeries),
+    m_textItem(new QGraphicsSimpleTextItem(this))
 {
     setAcceptedMouseButtons(Qt::LeftButton|Qt::RightButton);
 }
 
 LegendMarker::LegendMarker(QSeries *series, QBarSet *barset, QGraphicsItem *parent) : QGraphicsObject(parent),
-    mPos(0,0),
-    mSize(0,0),
-    mBoundingRect(0,0,0,0),
-    mMarkerBoundingRect(0,0,0,0),
-    mSeries(series),
-    mBarset(barset),
-    mPieslice(0),
-    mType(LegendMarkerTypeBarset),
-    mTextItem(new QGraphicsSimpleTextItem(this))
+    m_pos(0,0),
+    m_size(0,0),
+    m_boundingRect(0,0,0,0),
+    m_markerBoundingRect(0,0,0,0),
+    m_series(series),
+    m_barset(barset),
+    m_pieslice(0),
+    m_type(LegendMarkerTypeBarset),
+    m_textItem(new QGraphicsSimpleTextItem(this))
 {
     setAcceptedMouseButtons(Qt::LeftButton|Qt::RightButton);
 }
 
 LegendMarker::LegendMarker(QSeries *series, QPieSlice *pieslice, QGraphicsItem *parent) : QGraphicsObject(parent),
-    mPos(0,0),
-    mSize(0,0),
-    mBoundingRect(0,0,0,0),
-    mMarkerBoundingRect(0,0,0,0),
-    mSeries(series),
-    mBarset(0),
-    mPieslice(pieslice),
-    mType(LegendMarkerTypePieslice),
-    mTextItem(new QGraphicsSimpleTextItem(this))
+    m_pos(0,0),
+    m_size(0,0),
+    m_boundingRect(0,0,0,0),
+    m_markerBoundingRect(0,0,0,0),
+    m_series(series),
+    m_barset(0),
+    m_pieslice(pieslice),
+    m_type(LegendMarkerTypePieslice),
+    m_textItem(new QGraphicsSimpleTextItem(this))
 {
     setAcceptedMouseButtons(Qt::LeftButton|Qt::RightButton);
 }
 
 void LegendMarker::setPos(qreal x, qreal y)
 {
-    mPos = QPointF(x,y);
+    m_pos = QPointF(x,y);
     layoutChanged();
 }
 
 void LegendMarker::setPen(const QPen &pen)
 {
-    mPen = pen;
+    m_pen = pen;
 }
 
 QPen LegendMarker::pen() const
 {
-    return mPen;
+    return m_pen;
 }
 
 void LegendMarker::setBrush(const QBrush &brush)
 {
-    mBrush = brush;
+    m_brush = brush;
 }
 
 QBrush LegendMarker::brush() const
 {
-    return mBrush;
+    return m_brush;
 }
 
 void LegendMarker::setName(const QString name)
 {
-    mTextItem.setText(name);
+    m_textItem->setText(name);
     layoutChanged();
 }
 
 QString LegendMarker::name() const
 {
-    return mTextItem.text();
+    return m_textItem->text();
 }
 
 QSeries* LegendMarker::series() const
 {
-    return mSeries;
+    return m_series;
 }
 
 void LegendMarker::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
@@ -98,14 +98,14 @@ void LegendMarker::paint(QPainter *painter, const QStyleOptionGraphicsItem *opti
     Q_UNUSED(option)
     Q_UNUSED(widget)
 
-    painter->setPen(mPen);
-    painter->setBrush(mBrush);
-    painter->drawRect(mMarkerBoundingRect);
+    painter->setPen(m_pen);
+    painter->setBrush(m_brush);
+    painter->drawRect(m_markerBoundingRect);
 }
 
 QRectF LegendMarker::boundingRect() const
 {
-    return mBoundingRect;
+    return m_boundingRect;
 }
 
 void LegendMarker::layoutChanged()
@@ -113,30 +113,30 @@ void LegendMarker::layoutChanged()
     QSizeF markerSize(10,10);
     qreal margin = 2;
 
-    mSize.setHeight(markerSize.height() + 2 * margin);
-    mSize.setWidth(mTextItem.boundingRect().width() + markerSize.width() + 3 * margin);
+    m_size.setHeight(markerSize.height() + 2 * margin);
+    m_size.setWidth(m_textItem->boundingRect().width() + markerSize.width() + 3 * margin);
 
-    mBoundingRect = QRectF(mPos.x(),mPos.y(),mSize.width(),mSize.height());
+    m_boundingRect = QRectF(m_pos.x(),m_pos.y(),m_size.width(),m_size.height());
 
-    mMarkerBoundingRect = QRectF(mPos.x() + margin, mPos.y() + margin, markerSize.width(),markerSize.height());
+    m_markerBoundingRect = QRectF(m_pos.x() + margin, m_pos.y() + margin, markerSize.width(),markerSize.height());
 
-    mTextItem.setPos(mPos.x() + markerSize.width() + 2 * margin, mPos.y() + margin);
+    m_textItem->setPos(m_pos.x() + markerSize.width() + 2 * margin, m_pos.y() + margin);
 }
 
 void LegendMarker::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
-    switch (mType)
+    switch (m_type)
     {
     case LegendMarkerTypeSeries: {
-        emit clicked(mSeries,event->button());
+        emit clicked(m_series,event->button());
         break;
         }
     case LegendMarkerTypeBarset: {
-        emit clicked(mBarset,event->button());
+        emit clicked(m_barset,event->button());
         break;
         }
     case LegendMarkerTypePieslice: {
-        emit clicked(mPieslice,event->button());
+        emit clicked(m_pieslice,event->button());
         break;
         }
     default: {
@@ -147,22 +147,22 @@ void LegendMarker::mousePressEvent(QGraphicsSceneMouseEvent *event)
 
 void LegendMarker::changed()
 {
-    switch (mType)
+    switch (m_type)
     {
     case LegendMarkerTypeSeries: {
-        QXYSeries* s = static_cast<QXYSeries*> (mSeries);
+        QXYSeries* s = static_cast<QXYSeries*> (m_series);
         setBrush(s->brush());
         setName(s->name());
         break;
     }
     case LegendMarkerTypeBarset: {
-        setBrush(mBarset->brush());
-        setName(mBarset->name());
+        setBrush(m_barset->brush());
+        setName(m_barset->name());
         break;
     }
     case LegendMarkerTypePieslice: {
-        setBrush(mPieslice->brush());
-        setName(mPieslice->label());
+        setBrush(m_pieslice->brush());
+        setName(m_pieslice->label());
         break;
     }
     }
diff --git a/src/legendmarker_p.h b/src/legendmarker_p.h
index 45f10e0..5169e13 100644
--- a/src/legendmarker_p.h
+++ b/src/legendmarker_p.h
@@ -61,19 +61,19 @@ public Q_SLOTS:
     void changed();
 
 private:
-    QPointF mPos;
-    QSize mSize;
-    QRectF mBoundingRect;
-    QRectF mMarkerBoundingRect;
-    QBrush mBrush;
-    QPen mPen;
-
-    QSeries *mSeries;
-    QBarSet *mBarset;
-    QPieSlice *mPieslice;
-
-    LegendMarkerType mType;
-    QGraphicsSimpleTextItem mTextItem;
+    QPointF m_pos;
+    QSize m_size;
+    QRectF m_boundingRect;
+    QRectF m_markerBoundingRect;
+    QBrush m_brush;
+    QPen m_pen;
+
+    QSeries *m_series;
+    QBarSet *m_barset;
+    QPieSlice *m_pieslice;
+
+    LegendMarkerType m_type;
+    QGraphicsSimpleTextItem *m_textItem;
 
 };
 
diff --git a/src/legendscrollbutton.cpp b/src/legendscrollbutton.cpp
index 4a827eb..80bcee6 100644
--- a/src/legendscrollbutton.cpp
+++ b/src/legendscrollbutton.cpp
@@ -5,14 +5,14 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 LegendScrollButton::LegendScrollButton(ScrollButtonId id, QGraphicsItem *parent)
     : QGraphicsPolygonItem(parent)
-    ,mId(id)
+    ,m_id(id)
 {
     setAcceptedMouseButtons(Qt::LeftButton);
 }
 
 LegendScrollButton::ScrollButtonId LegendScrollButton::id()
 {
-    return mId;
+    return m_id;
 }
 
 void LegendScrollButton::mousePressEvent(QGraphicsSceneMouseEvent *event)
diff --git a/src/legendscrollbutton_p.h b/src/legendscrollbutton_p.h
index 62a1f6e..2ebd3dd 100644
--- a/src/legendscrollbutton_p.h
+++ b/src/legendscrollbutton_p.h
@@ -30,7 +30,7 @@ public Q_SLOTS:
 
 private:
 
-    ScrollButtonId mId;
+    ScrollButtonId m_id;
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE