Inspection: modernize C++11

* use nullptr

src/Mod/Inspection/App/InspectionFeature.cpp

@@ -715,8 +715,8 @@ Feature::Feature()
 {
     ADD_PROPERTY(SearchRadius,(0.05));
     ADD_PROPERTY(Thickness,(0.0));
-    ADD_PROPERTY(Actual,(0));
-    ADD_PROPERTY(Nominals,(0));
+    ADD_PROPERTY(Actual,(nullptr));
+    ADD_PROPERTY(Nominals,(nullptr));
     ADD_PROPERTY(Distances,(0.0));
 }
 
@@ -745,7 +745,7 @@ App::DocumentObjectExecReturn* Feature::execute(void)
     if (!pcActual)
         throw Base::ValueError("No actual geometry to inspect specified");
 
-    InspectActualGeometry* actual = 0;
+    InspectActualGeometry* actual = nullptr;
     if (pcActual->getTypeId().isDerivedFrom(Mesh::Feature::getClassTypeId())) {
         Mesh::Feature* mesh = static_cast<Mesh::Feature*>(pcActual);
         actual = new InspectActualMesh(mesh->Mesh.getValue());
@@ -767,7 +767,7 @@ App::DocumentObjectExecReturn* Feature::execute(void)
     std::vector<InspectNominalGeometry*> inspectNominal;
     const std::vector<App::DocumentObject*>& nominals = Nominals.getValues();
     for (std::vector<App::DocumentObject*>::const_iterator it = nominals.begin(); it != nominals.end(); ++it) {
-        InspectNominalGeometry* nominal = 0;
+        InspectNominalGeometry* nominal = nullptr;
         if ((*it)->getTypeId().isDerivedFrom(Mesh::Feature::getClassTypeId())) {
             Mesh::Feature* mesh = static_cast<Mesh::Feature*>(*it);
             nominal = new InspectNominalMesh(mesh->Mesh.getValue(), this->SearchRadius.getValue());
@@ -910,7 +910,7 @@ App::DocumentObjectExecReturn* Feature::execute(void)
     for (std::vector<InspectNominalGeometry*>::iterator it = inspectNominal.begin(); it != inspectNominal.end(); ++it)
         delete *it;
 
-    return 0;
+    return nullptr;
 }
 
 // ----------------------------------------------------------------

src/Mod/Inspection/Gui/AppInspectionGui.cpp

@@ -62,7 +62,7 @@ PyMOD_INIT_FUNC(InspectionGui)
 {
     if (!Gui::Application::Instance) {
         PyErr_SetString(PyExc_ImportError, "Cannot load Gui module in console application.");
-        PyMOD_Return(0);
+        PyMOD_Return(nullptr);
     }
 
     // instantiating the commands

src/Mod/Inspection/Gui/ViewProviderInspection.cpp

@@ -394,7 +394,7 @@ namespace InspectionGui {
 class ViewProviderProxyObject : public QObject
 {
 public:
-    ViewProviderProxyObject(QWidget* w) : QObject(0), widget(w) {}
+    ViewProviderProxyObject(QWidget* w) : QObject(nullptr), widget(w) {}
     ~ViewProviderProxyObject() {}
     void customEvent(QEvent *)
     {
@@ -424,7 +424,7 @@ public:
         flag->setPalette(p);
         flag->setText(text);
         flag->setOrigin(point->getPoint());
-        Gui::GLFlagWindow* flags = 0;
+        Gui::GLFlagWindow* flags = nullptr;
         std::list<Gui::GLGraphicsItem*> glItems = view->getGraphicsItemsOfType(Gui::GLFlagWindow::getClassTypeId());
         if (glItems.empty()) {
             flags = new Gui::GLFlagWindow(view);
@@ -479,7 +479,7 @@ void ViewProviderInspection::inspectCallback(void * ud, SoEventCallback * n)
         }
         else if (mbe->getButton() == SoMouseButtonEvent::BUTTON1 && mbe->getState() == SoButtonEvent::UP) {
             const SoPickedPoint * point = n->getPickedPoint();
-            if (point == NULL) {
+            if (point == nullptr) {
                 Base::Console().Message("No point picked.\n");
                 return;
             }

src/Mod/Inspection/Gui/VisualInspection.cpp

@@ -45,12 +45,12 @@ class SingleSelectionItem : public QTreeWidgetItem
 {
 public:
     SingleSelectionItem (QTreeWidget* parent)
-        : QTreeWidgetItem(parent), _compItem(0)
+        : QTreeWidgetItem(parent), _compItem(nullptr)
     {
     }
 
     SingleSelectionItem (QTreeWidgetItem* parent)
-        : QTreeWidgetItem (parent), _compItem(0)
+        : QTreeWidgetItem (parent), _compItem(nullptr)
     {
     }
 
@@ -209,7 +209,7 @@ void VisualInspection::onActivateItem(QTreeWidgetItem* item)
 
 void VisualInspection::accept()
 {
-    onActivateItem(0);
+    onActivateItem(nullptr);
     if (buttonOk->isEnabled()) {
         QDialog::accept();
         saveSettings();

src/Mod/Inspection/Gui/VisualInspection.h

@@ -36,7 +36,7 @@ class VisualInspection : public QDialog
     Q_OBJECT
 
 public:
-    VisualInspection(QWidget* parent = 0, Qt::WindowFlags fl = Qt::WindowFlags());
+    VisualInspection(QWidget* parent = nullptr, Qt::WindowFlags fl = Qt::WindowFlags());
   ~ VisualInspection();
 
     void accept();