diff --git a/src/app/container/vformula.cpp b/src/app/container/vformula.cpp
index 5afc18612..222ae5d75 100644
--- a/src/app/container/vformula.cpp
+++ b/src/app/container/vformula.cpp
@@ -79,7 +79,7 @@ bool VFormula::operator==(const VFormula &formula) const
     if (this->formula == formula.getFormula() && this->value == formula.getStringValue() &&
         this->checkZero == formula.getCheckZero() && this->data == formula.getData() &&
         this->toolId == formula.getToolId() && this->postfix == formula.getPostfix() &&
-        this->_error == formula.error() && this->dValue == formula.getDoubleValue())
+        this->_error == formula.error() && qFuzzyCompare(this->dValue, formula.getDoubleValue()))
     {
         isEqual = true;
     }
diff --git a/src/app/mainwindow.cpp b/src/app/mainwindow.cpp
index 49f776ff1..d4dd30a49 100644
--- a/src/app/mainwindow.cpp
+++ b/src/app/mainwindow.cpp
@@ -67,7 +67,7 @@ MainWindow::MainWindow(QWidget *parent)
       comboBoxDraws(nullptr), curFile(QString()), mode(Draw::Calculation), currentDrawIndex(0),
       currentToolBoxIndex(0), drawMode(true), recentFileActs{nullptr, nullptr, nullptr, nullptr, nullptr},
       separatorAct(nullptr), autoSaveTimer(nullptr), guiEnabled(true), gradationHeights(nullptr),
-      gradationSizes(nullptr)
+      gradationSizes(nullptr), toolOptions(nullptr)
 {
     CreateActions();
     CreateMenus();
diff --git a/src/app/visualization/vistoolsplinepath.cpp b/src/app/visualization/vistoolsplinepath.cpp
index b4698e350..5e022ec7c 100644
--- a/src/app/visualization/vistoolsplinepath.cpp
+++ b/src/app/visualization/vistoolsplinepath.cpp
@@ -113,7 +113,11 @@ void VisToolSplinePath::setMode(const Mode &value)
 //---------------------------------------------------------------------------------------------------------------------
 QGraphicsEllipseItem *VisToolSplinePath::getPoint(unsigned int i)
 {
-    if (points.size() - 1 >= i && points.isEmpty() == false)
+    if (points.size() == 0)
+    {
+        nullptr;
+    }
+    else if (static_cast<unsigned int>(points.size() - 1) >= i && points.isEmpty() == false)
     {
         return points.at(i);
     }
diff --git a/src/app/widgets/vformulapropertyeditor.cpp b/src/app/widgets/vformulapropertyeditor.cpp
index 8219732ee..2873b84a3 100644
--- a/src/app/widgets/vformulapropertyeditor.cpp
+++ b/src/app/widgets/vformulapropertyeditor.cpp
@@ -41,8 +41,8 @@ using namespace VPE;
 
 // VFormulaPropertyEditor
 //---------------------------------------------------------------------------------------------------------------------
-VFormulaPropertyEditor::VFormulaPropertyEditor(QWidget *parent) :
-    QWidget(parent)
+VFormulaPropertyEditor::VFormulaPropertyEditor(QWidget *parent)
+    : QWidget(parent), formula(VFormula()), ToolButton(nullptr), TextLabel(nullptr), Spacer(nullptr)
 {
     setAutoFillBackground(true);
 
diff --git a/src/app/widgets/vformulapropertyeditor.h b/src/app/widgets/vformulapropertyeditor.h
index 622facc76..9c3eecf25 100644
--- a/src/app/widgets/vformulapropertyeditor.h
+++ b/src/app/widgets/vformulapropertyeditor.h
@@ -68,6 +68,7 @@ private slots:
     void onToolButtonClicked();
 
 private:
+    Q_DISABLE_COPY(VFormulaPropertyEditor)
     VFormula formula;
     QToolButton* ToolButton;
     QLabel* TextLabel;
diff --git a/src/app/widgets/vmaingraphicsview.cpp b/src/app/widgets/vmaingraphicsview.cpp
index c8dbe184c..54fc0ff65 100644
--- a/src/app/widgets/vmaingraphicsview.cpp
+++ b/src/app/widgets/vmaingraphicsview.cpp
@@ -41,12 +41,11 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 GraphicsViewZoom::GraphicsViewZoom(QGraphicsView* view)
-  : QObject(view), _view(view), _numScheduledScalings(0)
+  : QObject(view), _view(view), _modifiers(Qt::ControlModifier), _zoom_factor_base(1.0015),
+    target_scene_pos(QPointF()), target_viewport_pos(QPointF()), _numScheduledScalings(0)
 {
   _view->viewport()->installEventFilter(this);
   _view->setMouseTracking(true);
-  _modifiers = Qt::ControlModifier;
-  _zoom_factor_base = 1.0015;
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/widgets/vmaingraphicsview.h b/src/app/widgets/vmaingraphicsview.h
index 810b83427..17701efb9 100644
--- a/src/app/widgets/vmaingraphicsview.h
+++ b/src/app/widgets/vmaingraphicsview.h
@@ -79,7 +79,7 @@ private:
     QGraphicsView*        _view;
     Qt::KeyboardModifiers _modifiers;
     double                _zoom_factor_base;
-    QPointF                target_scene_pos;
+    QPointF               target_scene_pos;
     QPointF               target_viewport_pos;
 
     bool eventFilter(QObject* object, QEvent* event);
diff --git a/src/app/widgets/vtooloptionspropertybrowser.cpp b/src/app/widgets/vtooloptionspropertybrowser.cpp
index e55e5bd51..5816bf164 100644
--- a/src/app/widgets/vtooloptionspropertybrowser.cpp
+++ b/src/app/widgets/vtooloptionspropertybrowser.cpp
@@ -43,8 +43,7 @@ using namespace VPE;
 
 //---------------------------------------------------------------------------------------------------------------------
 VToolOptionsPropertyBrowser::VToolOptionsPropertyBrowser(QDockWidget *parent)
-    :QObject(parent),
-      currentItem(nullptr),
+    :QObject(parent), PropertyModel(nullptr), formView(nullptr), currentItem(nullptr),
       propertyToId(QMap<VProperty *, QString>()),
       idToProperty(QMap<QString, VProperty *>())
 {
@@ -58,7 +57,7 @@ VToolOptionsPropertyBrowser::VToolOptionsPropertyBrowser(QDockWidget *parent)
 
     parent->setWidget(scroll);
 
-    connect(PropertyModel, SIGNAL(onDataChangedByEditor(VProperty*)), this, SLOT(userChangedData(VProperty*)));
+    connect(PropertyModel, &VPropertyModel::onDataChangedByEditor, this, &VToolOptionsPropertyBrowser::userChangedData);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/qmuparser/qmuparsertoken.h b/src/libs/qmuparser/qmuparsertoken.h
index 3e5d44a62..4c40a0820 100644
--- a/src/libs/qmuparser/qmuparsertoken.h
+++ b/src/libs/qmuparser/qmuparsertoken.h
@@ -326,6 +326,23 @@ public:
         return m_pCallback->GetAssociativity();
     }
 
+    //------------------------------------------------------------------------------
+    template < class FunctionPtr >
+    FunctionPtr union_cast( void* objectPtr ) const
+    {
+        union
+        {
+            void* obj;
+            FunctionPtr func;
+        } var;
+
+        Q_STATIC_ASSERT_X(sizeof(void *) == sizeof(void (*)(void)),
+                          "object pointer and function pointer sizes must equal");
+
+        var.obj = objectPtr;
+        return var.func;
+    }
+
     //------------------------------------------------------------------------------
     /**
      * @brief Return the address of the callback function assoziated with function and operator tokens.
@@ -343,8 +360,8 @@ public:
      */
     generic_fun_type GetFuncAddr() const
     {
-        return ( m_pCallback.get() ) ? reinterpret_cast<generic_fun_type> ( m_pCallback->GetAddr() ) :
-                                                      reinterpret_cast<generic_fun_type> (0);
+        return ( union_cast<generic_fun_type>( m_pCallback.get() ) ) ?
+                    union_cast<generic_fun_type>( m_pCallback->GetAddr() ) : union_cast<generic_fun_type>(0);
     }
 
     //------------------------------------------------------------------------------
diff --git a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.h b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.h
index 65e80b8bd..7b21df45b 100644
--- a/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.h
+++ b/src/libs/vpropertyexplorer/plugins/Vector3d/vvector3dproperty.h
@@ -32,16 +32,12 @@ struct VPROPERTYEXPLORERSHARED_EXPORT Vector3D
 {
 public:
     Vector3D()
-    {
-        X = Y = Z = 0;
-    }
+        :X(0), Y(0), Z(0)
+    {}
 
     Vector3D(const Vector3D& other)
-    {
-        X = other.X;
-        Y = other.Y;
-        Z = other.Z;
-    }
+        :X(other.X), Y(other.Y), Z(other.Z)
+    {}
 
     ~Vector3D() {}
 
diff --git a/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp b/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
index 83798ff47..64b945343 100644
--- a/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vnumberproperty.cpp
@@ -80,26 +80,19 @@ QVariant VIntegerProperty::getEditorData(QWidget* editor) const
     return QVariant(0);
 }
 
-void VIntegerProperty::setSettings(int minimum, int maxiumum, int singleStep)
-{
-    minValue = minimum;
-    maxValue = maxiumum;
-    this->singleStep = singleStep;
-}
-
 void VIntegerProperty::setSetting(const QString& key, const QVariant& value)
 {
     if (key == QLatin1String("Min"))
     {
-        setSettings(value.toInt(), maxValue);
+        maxValue = value.toInt();
     }
     else if (key == QLatin1String("Max"))
     {
-        setSettings(minValue, value.toInt());
+        minValue = value.toInt();
     }
     else if (key == QLatin1String("Step"))
     {
-        setSettings(singleStep, value.toInt());
+        singleStep = value.toInt();
     }
 }
 
@@ -194,31 +187,23 @@ QVariant VDoubleProperty::getEditorData(QWidget* editor) const
     return QVariant(0);
 }
 
-void VDoubleProperty::setSettings(double minimum, double maxiumum, double singleStep, int precision)
-{
-    minValue = minimum;
-    maxValue = maxiumum;
-    this->singleStep = singleStep;
-    Precision = precision;
-}
-
 void VDoubleProperty::setSetting(const QString& key, const QVariant& value)
 {
     if (key == QLatin1String("Min"))
     {
-        setSettings(value.toDouble(), maxValue, singleStep, Precision);
+        minValue = value.toDouble();
     }
     else if (key == QLatin1String("Max"))
     {
-        setSettings(minValue, value.toDouble(), singleStep, Precision);
+        maxValue = value.toDouble();
     }
     else if (key == QLatin1String("Step"))
     {
-        setSettings(minValue, maxValue, value.toDouble(), Precision);
+        singleStep = value.toDouble();
     }
     else if (key == QLatin1String("Precision"))
     {
-        setSettings(minValue, maxValue, singleStep, value.toDouble());
+        Precision = value.toDouble();
     }
 }
 
diff --git a/src/libs/vpropertyexplorer/plugins/vnumberproperty.h b/src/libs/vpropertyexplorer/plugins/vnumberproperty.h
index 99814ae2c..4ccd0374a 100644
--- a/src/libs/vpropertyexplorer/plugins/vnumberproperty.h
+++ b/src/libs/vpropertyexplorer/plugins/vnumberproperty.h
@@ -48,11 +48,6 @@ public:
     //! Gets the data from the widget
     virtual QVariant getEditorData(QWidget* editor) const;
 
-    //! Sets the settings of a basic integer property
-    //! \param minimum The minimum value
-    //! \param maxiumum The maximum value
-    virtual void setSettings(int minimum, int maxiumum, int singleStep = 1.0);
-
     //! Sets the settings. Available settings:
     //!
     //! key: "Min" - value: Minimum number as integer
@@ -104,12 +99,6 @@ public:
     //! Gets the data from the widget
     virtual QVariant getEditorData(QWidget* editor) const;
 
-    //! Sets the settings of a double property
-    //! \param minimum The minimum value
-    //! \param maxiumum The maximum value
-    //! \param precision The number of decimal places
-    virtual void setSettings(double minimum, double maxiumum, double singleStep, int precision);
-
     //! Sets the settings. Available settings:
     //!
     //! key: "Min" - value: Minimum number as integer
diff --git a/src/libs/vpropertyexplorer/vproperty.cpp b/src/libs/vpropertyexplorer/vproperty.cpp
index f1ce70acf..ed0bd6e99 100644
--- a/src/libs/vpropertyexplorer/vproperty.cpp
+++ b/src/libs/vpropertyexplorer/vproperty.cpp
@@ -411,5 +411,6 @@ void VProperty::UpdateParent(const QVariant &value)
 
 void VProperty::ValueChildChanged(const QVariant &value, int typeForParent)
 {
-
+    Q_UNUSED(value)
+    Q_UNUSED(typeForParent)
 }
diff --git a/src/libs/vpropertyexplorer/vproperty.h b/src/libs/vpropertyexplorer/vproperty.h
index 06bd67a23..2a57c9d66 100644
--- a/src/libs/vpropertyexplorer/vproperty.h
+++ b/src/libs/vpropertyexplorer/vproperty.h
@@ -40,7 +40,7 @@ static const int MyCustomEventType = 1099;
 class UserChangeEvent : public QEvent
 {
 public:
-    UserChangeEvent() : QEvent((QEvent::Type)MyCustomEventType) {}
+    UserChangeEvent() : QEvent(static_cast<QEvent::Type>(MyCustomEventType)) {}
 };
 
 class VPropertyPrivate;
@@ -210,6 +210,7 @@ protected:
 private:
     // Provide access functions for the d_ptr
     Q_DECLARE_PRIVATE(VProperty)
+    Q_DISABLE_COPY(VProperty)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vproperty_p.h b/src/libs/vpropertyexplorer/vproperty_p.h
index ff7fea3ca..b91fc4fc6 100644
--- a/src/libs/vpropertyexplorer/vproperty_p.h
+++ b/src/libs/vpropertyexplorer/vproperty_p.h
@@ -69,15 +69,19 @@ public:
 
     //! Constructor passing name and type
     VPropertyPrivate(const QString& name, QVariant::Type type)
-        : VariantValue(type), Name(name), PropertyVariantType(type), UpdateParent(false), UpdateChildren(false),
-          Parent(nullptr), editor(nullptr), type(Property::Simple)
+        : VariantValue(type), Name(name), Description(QString()), IsEmpty(false), PropertyVariantType(type),
+          UpdateParent(false), UpdateChildren(false), Parent(nullptr), editor(nullptr), type(Property::Simple),
+          Children(QList<VProperty*>())
     {}
 
     //! Constructor
     VPropertyPrivate()
-        : VariantValue(), Name(), PropertyVariantType(QVariant::Invalid), UpdateParent(false), UpdateChildren(false),
-          Parent(nullptr), editor(nullptr)
+        : VariantValue(), Name(), Description(QString()), IsEmpty(false), PropertyVariantType(QVariant::Invalid),
+          UpdateParent(false), UpdateChildren(false), Parent(nullptr), editor(nullptr), type(Property::Simple),
+          Children(QList<VProperty*>())
     {}
+private:
+    Q_DISABLE_COPY(VPropertyPrivate)
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertyformview.cpp b/src/libs/vpropertyexplorer/vpropertyformview.cpp
index a82200d95..c76ebcfe1 100644
--- a/src/libs/vpropertyexplorer/vpropertyformview.cpp
+++ b/src/libs/vpropertyexplorer/vpropertyformview.cpp
@@ -136,6 +136,8 @@ void VPropertyFormView::modelDestroyed()
 
 void VPropertyFormView::dataChanged(const QModelIndex &top_left, const QModelIndex &bottom_right)
 {
+    Q_UNUSED(top_left)
+    Q_UNUSED(bottom_right)
     if (static_cast<VPropertyFormViewPrivate*>(d_ptr)->IgnoreDataChangedSignal)
     {
         return;
diff --git a/src/libs/vpropertyexplorer/vpropertyformwidget.h b/src/libs/vpropertyexplorer/vpropertyformwidget.h
index 42243112a..60749ff0a 100644
--- a/src/libs/vpropertyexplorer/vpropertyformwidget.h
+++ b/src/libs/vpropertyexplorer/vpropertyformwidget.h
@@ -93,6 +93,8 @@ protected:
     //! Commits data of an editor
     void commitData(QWidget* editor);
 
+private:
+    Q_DISABLE_COPY(VPropertyFormWidget)
 };
 
 }   // Namespace VPE
diff --git a/src/libs/vpropertyexplorer/vpropertymodel.h b/src/libs/vpropertyexplorer/vpropertymodel.h
index e3167a98e..615507c17 100644
--- a/src/libs/vpropertyexplorer/vpropertymodel.h
+++ b/src/libs/vpropertyexplorer/vpropertymodel.h
@@ -159,6 +159,9 @@ protected:
 
     //! The model data
     VPropertyModelPrivate* d_ptr;
+
+private:
+    Q_DISABLE_COPY(VPropertyModel)
 };
 
 }