diff --git a/src/container/vcontainer.cpp b/src/container/vcontainer.cpp
index e2a33e8f7..ddac8b87a 100644
--- a/src/container/vcontainer.cpp
+++ b/src/container/vcontainer.cpp
@@ -72,7 +72,7 @@ void VContainer::setData(const VContainer &data)
     qDeleteAll(gObjects);
     gObjects.clear();
     const QHash<qint64, VGObject*> *obj = data.DataGObjects();
-    Q_ASSERT(obj != 0);
+    Q_CHECK_PTR(obj);
     QHashIterator<qint64, VGObject*> i(*obj);
     while (i.hasNext())
     {
@@ -219,7 +219,7 @@ template <typename val>
 void VContainer::UpdateObject(QHash<qint64, val> &obj, const qint64 &id, val point)
 {
     Q_ASSERT_X(id > 0, Q_FUNC_INFO, "id <= 0");
-    Q_ASSERT(point != 0);
+    Q_CHECK_PTR(point);
     point->setId(id);
     if (gObjects.contains(id))
     {
@@ -359,7 +359,7 @@ void VContainer::AddLine(const qint64 &firstPointId, const qint64 &secondPointId
 template <typename key, typename val>
 qint64 VContainer::AddObject(QHash<key, val> &obj, val value)
 {
-    Q_ASSERT(value != 0);
+    Q_CHECK_PTR(value);
     qint64 id = getNextId();
     value->setId(id);
     obj[id] = value;
diff --git a/src/container/vcontainer.h b/src/container/vcontainer.h
index 8d0d25df9..87508a6b8 100644
--- a/src/container/vcontainer.h
+++ b/src/container/vcontainer.h
@@ -65,7 +65,7 @@ public:
     void CopyGObject(const VContainer &data, const qint64 &id)
     {
         T *obj = new T(*data.GeometricObject<const T *>(id));
-        Q_ASSERT(obj != 0);
+        Q_CHECK_PTR(obj);
         UpdateGObject(id, obj);
     }
    /**
@@ -86,7 +86,7 @@ public:
             throw VExceptionBadId(tr("Can't find object"), id);
         }
         T obj = dynamic_cast<T>(gObj);
-        Q_ASSERT(obj != 0);
+        Q_CHECK_PTR(obj);
         return obj;
     }
 
diff --git a/src/dialogs/dialogarc.cpp b/src/dialogs/dialogarc.cpp
index c7899bd0f..5056dc055 100644
--- a/src/dialogs/dialogarc.cpp
+++ b/src/dialogs/dialogarc.cpp
@@ -196,7 +196,7 @@ void DialogArc::F2Changed()
 
 void DialogArc::CheckState()
 {
-    Q_ASSERT(bOk != 0);
+    Q_CHECK_PTR(bOk);
     bOk->setEnabled(flagRadius && flagF1 && flagF2);
 }
 
@@ -224,7 +224,7 @@ void DialogArc::ShowLineAngles()
     ui->listWidget->clear();
     connect(ui->listWidget, &QListWidget::currentRowChanged, this, &DialogArc::ValChenged);
     const QHash<QString, qreal> *lineAnglesTable = data->DataLineAngles();
-    Q_ASSERT(lineAnglesTable != 0);
+    Q_CHECK_PTR(lineAnglesTable);
     QHashIterator<QString, qreal> i(*lineAnglesTable);
     while (i.hasNext())
     {
diff --git a/src/dialogs/dialogdetail.cpp b/src/dialogs/dialogdetail.cpp
index 6a9324cb6..4e7951a83 100644
--- a/src/dialogs/dialogdetail.cpp
+++ b/src/dialogs/dialogdetail.cpp
@@ -180,7 +180,7 @@ void DialogDetail::BiasXChanged(qreal d)
 {
     qint32 row = ui.listWidget->currentRow();
     QListWidgetItem *item = ui.listWidget->item( row );
-    Q_ASSERT(item != 0);
+    Q_CHECK_PTR(item);
     VNodeDetail node = qvariant_cast<VNodeDetail>(item->data(Qt::UserRole));
     node.setMx(toPixel(d));
     item->setData(Qt::UserRole, QVariant::fromValue(node));
@@ -190,7 +190,7 @@ void DialogDetail::BiasYChanged(qreal d)
 {
     qint32 row = ui.listWidget->currentRow();
     QListWidgetItem *item = ui.listWidget->item( row );
-    Q_ASSERT(item != 0);
+    Q_CHECK_PTR(item);
     VNodeDetail node = qvariant_cast<VNodeDetail>(item->data(Qt::UserRole));
     node.setMy(toPixel(d));
     item->setData(Qt::UserRole, QVariant::fromValue(node));
diff --git a/src/dialogs/dialoglineintersect.cpp b/src/dialogs/dialoglineintersect.cpp
index 74899f451..4950225f2 100644
--- a/src/dialogs/dialoglineintersect.cpp
+++ b/src/dialogs/dialoglineintersect.cpp
@@ -170,7 +170,7 @@ void DialogLineIntersect::P2Line2Changed(int index)
 
 void DialogLineIntersect::CheckState()
 {
-    Q_ASSERT(bOk != 0);
+    Q_CHECK_PTR(bOk);
     bOk->setEnabled(flagName && flagPoint);
 }
 
diff --git a/src/dialogs/dialogtool.cpp b/src/dialogs/dialogtool.cpp
index b641815fa..fdb056d20 100644
--- a/src/dialogs/dialogtool.cpp
+++ b/src/dialogs/dialogtool.cpp
@@ -40,7 +40,7 @@ DialogTool::DialogTool(const VContainer *data, QWidget *parent)
       radioButtonIncrements(0), radioButtonLengthLine(0), radioButtonLengthArc(0), radioButtonLengthCurve(0),
       lineStyles(QStringList())
 {
-    Q_ASSERT(data != 0);
+    Q_CHECK_PTR(data);
     timerFormula = new QTimer(this);
     connect(timerFormula, &QTimer::timeout, this, &DialogTool::EvalFormula);
     //Keep synchronize with VAbstractTool styles list!!!
@@ -70,7 +70,7 @@ void DialogTool::showEvent(QShowEvent *event)
 
 void DialogTool::FillComboBoxPoints(QComboBox *box, const qint64 &id) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     const QHash<qint64, VGObject*> *objs = data->DataGObjects();
     QHashIterator<qint64, VGObject*> i(*objs);
     QMap<QString, qint64> list;
@@ -92,7 +92,7 @@ void DialogTool::FillComboBoxPoints(QComboBox *box, const qint64 &id) const
 
 void DialogTool::FillComboBoxArcs(QComboBox *box, const qint64 &id, ComboMode::ComboBoxCutArc cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     const QHash<qint64, VGObject *> *objs = data->DataGObjects();
     QHashIterator<qint64, VGObject*> i(*objs);
     QMap<QString, qint64> list;
@@ -129,7 +129,7 @@ void DialogTool::FillComboBoxArcs(QComboBox *box, const qint64 &id, ComboMode::C
 
 void DialogTool::FillComboBoxSplines(QComboBox *box, const qint64 &id, ComboMode::ComboBoxCutSpline cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     const QHash<qint64, VGObject *> *objs = data->DataGObjects();
     QHashIterator<qint64, VGObject*> i(*objs);
     QMap<QString, qint64> list;
@@ -166,7 +166,7 @@ void DialogTool::FillComboBoxSplines(QComboBox *box, const qint64 &id, ComboMode
 
 void DialogTool::FillComboBoxSplinesPath(QComboBox *box, const qint64 &id, ComboMode::ComboBoxCutSpline cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     const QHash<qint64, VGObject *> *objs = data->DataGObjects();
     QHashIterator<qint64, VGObject *> i(*objs);
     QMap<QString, qint64> list;
@@ -203,7 +203,7 @@ void DialogTool::FillComboBoxSplinesPath(QComboBox *box, const qint64 &id, Combo
 
 void DialogTool::FillComboBoxTypeLine(QComboBox *box) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     box->addItems(lineStyles);
     box->setCurrentIndex(1);
 }
@@ -270,8 +270,8 @@ void DialogTool::ChangeCurrentData(QComboBox *box, const qint64 &value) const
 
 void DialogTool::PutValHere(QLineEdit *lineEdit, QListWidget *listWidget)
 {
-    Q_ASSERT(lineEdit != 0);
-    Q_ASSERT(listWidget != 0);
+    Q_CHECK_PTR(lineEdit);
+    Q_CHECK_PTR(listWidget);
     QListWidgetItem *item = listWidget->currentItem();
     int pos = lineEdit->cursorPosition();
     lineEdit->setText(lineEdit->text().insert(lineEdit->cursorPosition(), item->text()));
@@ -281,9 +281,9 @@ void DialogTool::PutValHere(QLineEdit *lineEdit, QListWidget *listWidget)
 
 void DialogTool::ValFormulaChanged(bool &flag, QLineEdit *edit, QTimer *timer)
 {
-    Q_ASSERT(edit != 0);
-    Q_ASSERT(timer != 0);
-    Q_ASSERT(labelEditFormula != 0);
+    Q_CHECK_PTR(edit);
+    Q_CHECK_PTR(timer);
+    Q_CHECK_PTR(labelEditFormula);
     if (edit->text().isEmpty())
     {
         flag = false;
@@ -298,10 +298,10 @@ void DialogTool::ValFormulaChanged(bool &flag, QLineEdit *edit, QTimer *timer)
 
 void DialogTool::Eval(QLineEdit *edit, bool &flag, QTimer *timer, QLabel *label)
 {
-    Q_ASSERT(edit != 0);
-    Q_ASSERT(timer != 0);
-    Q_ASSERT(label != 0);
-    Q_ASSERT(labelEditFormula != 0);
+    Q_CHECK_PTR(edit);
+    Q_CHECK_PTR(timer);
+    Q_CHECK_PTR(label);
+    Q_CHECK_PTR(labelEditFormula);
     QPalette palette = labelEditFormula->palette();
     if (edit->text().isEmpty())
     {
@@ -333,7 +333,7 @@ void DialogTool::Eval(QLineEdit *edit, bool &flag, QTimer *timer, QLabel *label)
 
 void DialogTool::setCurrentPointId(QComboBox *box, qint64 &pointId, const qint64 &value, const qint64 &id) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     FillComboBoxPoints(box, id);
     pointId = value;
     ChangeCurrentData(box, value);
@@ -342,7 +342,7 @@ void DialogTool::setCurrentPointId(QComboBox *box, qint64 &pointId, const qint64
 void DialogTool::setCurrentSplineId(QComboBox *box, qint64 &splineId, const qint64 &value, const qint64 &id,
                                     ComboMode::ComboBoxCutSpline cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     FillComboBoxSplines(box, id, cut);
     splineId = value;
     ChangeCurrentData(box, value);
@@ -351,7 +351,7 @@ void DialogTool::setCurrentSplineId(QComboBox *box, qint64 &splineId, const qint
 void DialogTool::setCurrentArcId(QComboBox *box, qint64 &arcId, const qint64 &value, const qint64 &id,
                                  ComboMode::ComboBoxCutArc cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     FillComboBoxArcs(box, id, cut);
     arcId = value;
     ChangeCurrentData(box, value);
@@ -360,7 +360,7 @@ void DialogTool::setCurrentArcId(QComboBox *box, qint64 &arcId, const qint64 &va
 void DialogTool::setCurrentSplinePathId(QComboBox *box, qint64 &splinePathId, const qint64 &value,
                                         const qint64 &id, ComboMode::ComboBoxCutSpline cut) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     FillComboBoxSplinesPath(box, id, cut);
     splinePathId = value;
     ChangeCurrentData(box, value);
@@ -368,7 +368,7 @@ void DialogTool::setCurrentSplinePathId(QComboBox *box, qint64 &splinePathId, co
 
 qint64 DialogTool::getCurrentObjectId(QComboBox *box) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     qint32 index = box->currentIndex();
     Q_ASSERT(index != -1);
     if (index != -1)
@@ -383,7 +383,7 @@ qint64 DialogTool::getCurrentObjectId(QComboBox *box) const
 
 void DialogTool::FillList(QComboBox *box, const QMap<QString, qint64> &list) const
 {
-    Q_ASSERT(box != 0);
+    Q_CHECK_PTR(box);
     box->clear();
 
     QMapIterator<QString, qint64> iter(list);
@@ -396,7 +396,7 @@ void DialogTool::FillList(QComboBox *box, const QMap<QString, qint64> &list) con
 
 void DialogTool::CheckState()
 {
-    Q_ASSERT(bOk != 0);
+    Q_CHECK_PTR(bOk);
     bOk->setEnabled(flagFormula && flagName);
 }
 
@@ -408,7 +408,7 @@ void DialogTool::ChoosedObject(qint64 id, const Scene::Scenes &type)
 
 void DialogTool::NamePointChanged()
 {
-    Q_ASSERT(labelEditNamePoint != 0);
+    Q_CHECK_PTR(labelEditNamePoint);
     QLineEdit* edit = qobject_cast<QLineEdit*>(sender());
     if (edit)
     {
@@ -452,56 +452,56 @@ void DialogTool::FormulaChanged()
 
 void DialogTool::ArrowUp()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(90);
 }
 
 void DialogTool::ArrowDown()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(270);
 }
 
 void DialogTool::ArrowLeft()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(180);
 }
 
 void DialogTool::ArrowRight()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(0);
 }
 
 void DialogTool::ArrowLeftUp()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(135);
 }
 
 void DialogTool::ArrowLeftDown()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(225);
 }
 
 void DialogTool::ArrowRightUp()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(45);
 }
 
 void DialogTool::ArrowRightDown()
 {
-    Q_ASSERT(spinBoxAngle != 0);
+    Q_CHECK_PTR(spinBoxAngle);
     spinBoxAngle->setValue(315);
 }
 
 void DialogTool::EvalFormula()
 {
-    Q_ASSERT(lineEditFormula != 0);
-    Q_ASSERT(labelResultCalculation != 0);
+    Q_CHECK_PTR(lineEditFormula);
+    Q_CHECK_PTR(labelResultCalculation);
     Eval(lineEditFormula, flagFormula, timerFormula, labelResultCalculation);
 }
 
@@ -542,8 +542,8 @@ void DialogTool::PutHere()
 
 void DialogTool::PutVal(QListWidgetItem *item)
 {
-    Q_ASSERT(lineEditFormula != 0);
-    Q_ASSERT(item != 0);
+    Q_CHECK_PTR(lineEditFormula);
+    Q_CHECK_PTR(item);
     int pos = lineEditFormula->cursorPosition();
     lineEditFormula->setText(lineEditFormula->text().insert(lineEditFormula->cursorPosition(),
                                                             item->text()));
@@ -553,14 +553,14 @@ void DialogTool::PutVal(QListWidgetItem *item)
 
 void DialogTool::ValChenged(int row)
 {
-    Q_ASSERT(listWidget != 0);
-    Q_ASSERT(labelDescription != 0);
-    Q_ASSERT(radioButtonSizeGrowth != 0);
-    Q_ASSERT(radioButtonStandardTable != 0);
-    Q_ASSERT(radioButtonIncrements != 0);
-    Q_ASSERT(radioButtonLengthLine != 0);
-    Q_ASSERT(radioButtonLengthArc != 0);
-    Q_ASSERT(radioButtonLengthCurve != 0);
+    Q_CHECK_PTR(listWidget);
+    Q_CHECK_PTR(labelDescription);
+    Q_CHECK_PTR(radioButtonSizeGrowth);
+    Q_CHECK_PTR(radioButtonStandardTable);
+    Q_CHECK_PTR(radioButtonIncrements);
+    Q_CHECK_PTR(radioButtonLengthLine);
+    Q_CHECK_PTR(radioButtonLengthArc);
+    Q_CHECK_PTR(radioButtonLengthCurve);
     if (listWidget->count() == 0)
     {
         return;
@@ -621,12 +621,12 @@ void DialogTool::ValChenged(int row)
 
 void DialogTool::UpdateList()
 {
-    Q_ASSERT(radioButtonSizeGrowth != 0);
-    Q_ASSERT(radioButtonStandardTable != 0);
-    Q_ASSERT(radioButtonIncrements != 0);
-    Q_ASSERT(radioButtonLengthLine != 0);
-    Q_ASSERT(radioButtonLengthArc != 0);
-    Q_ASSERT(radioButtonLengthCurve != 0);
+    Q_CHECK_PTR(radioButtonSizeGrowth);
+    Q_CHECK_PTR(radioButtonStandardTable);
+    Q_CHECK_PTR(radioButtonIncrements);
+    Q_CHECK_PTR(radioButtonLengthLine);
+    Q_CHECK_PTR(radioButtonLengthArc);
+    Q_CHECK_PTR(radioButtonLengthCurve);
 
     if (radioButtonSizeGrowth->isChecked())
     {
@@ -657,7 +657,7 @@ void DialogTool::UpdateList()
 template <class key, class val>
 void DialogTool::ShowVariable(const QHash<key, val> *var)
 {
-    Q_ASSERT(listWidget != 0);
+    Q_CHECK_PTR(listWidget);
     disconnect(listWidget, &QListWidget::currentRowChanged, this, &DialogTool::ValChenged);
     listWidget->clear();
 
diff --git a/src/exception/vexception.cpp b/src/exception/vexception.cpp
index 05557662f..89ef5189c 100644
--- a/src/exception/vexception.cpp
+++ b/src/exception/vexception.cpp
@@ -56,9 +56,9 @@ void VException::CriticalMessageBox(const QString &situation) const
     }
     msgBox.setIcon(QMessageBox::Critical);
     QSpacerItem* horizontalSpacer = new QSpacerItem(500, 0, QSizePolicy::Minimum, QSizePolicy::Expanding);
-    Q_ASSERT(horizontalSpacer != 0);
+    Q_CHECK_PTR(horizontalSpacer);
     QGridLayout* layout = static_cast<QGridLayout*>(msgBox.layout());
-    Q_ASSERT(layout != 0);
+    Q_CHECK_PTR(layout);
     layout->addItem(horizontalSpacer, layout->rowCount(), 0, 1, layout->columnCount());
     msgBox.exec();
 }
diff --git a/src/geometry/vequidistant.cpp b/src/geometry/vequidistant.cpp
index 539dc009d..e0bb7f635 100644
--- a/src/geometry/vequidistant.cpp
+++ b/src/geometry/vequidistant.cpp
@@ -30,7 +30,7 @@
 
 QPainterPath VEquidistant::ContourPath(const qint64 &idDetail, const VContainer *data) const
 {
-    Q_ASSERT(data != 0);
+    Q_CHECK_PTR(data);
     VDetail detail = data->GetDetail(idDetail);
     QVector<QPointF> points;
     QVector<QPointF> pointsEkv;
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 8a562d87e..7253c4b3e 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -307,7 +307,7 @@ void MainWindow::SetToolButton(bool checked, Tool::Tools t, const QString &curso
     {
         if (QToolButton *tButton = qobject_cast< QToolButton * >(this->sender()))
         {
-            Q_ASSERT(tButton != 0);
+            Q_CHECK_PTR(tButton);
             tButton->setChecked(true);
         }
     }
diff --git a/src/tablewindow.cpp b/src/tablewindow.cpp
index 8c3ff9fa1..ded1c8012 100644
--- a/src/tablewindow.cpp
+++ b/src/tablewindow.cpp
@@ -293,7 +293,7 @@ void TableWindow::itemColliding(QList<QGraphicsItem *> list, int number)
                         if (lis.size()-2 <= 0)
                         {
                             VItem * bitem = qgraphicsitem_cast<VItem *> ( listCollidingItems.at(i) );
-                            Q_ASSERT(bitem != 0);
+                            Q_CHECK_PTR(bitem);
                             bitem->setPen(QPen(Qt::black, widthMainLine));
                             listCollidingItems.removeAt(i);
                         }
@@ -302,7 +302,7 @@ void TableWindow::itemColliding(QList<QGraphicsItem *> list, int number)
                 else if (listCollidingItems.size()==1)
                 {
                     VItem * bitem = qgraphicsitem_cast<VItem *> ( listCollidingItems.at(0) );
-                    Q_ASSERT(bitem != 0);
+                    Q_CHECK_PTR(bitem);
                     bitem->setPen(QPen(Qt::black, widthMainLine));
                     listCollidingItems.clear();
                     collidingItems = true;
diff --git a/src/tools/drawTools/vdrawtool.h b/src/tools/drawTools/vdrawtool.h
index 8594812a2..e17a1ebd3 100644
--- a/src/tools/drawTools/vdrawtool.h
+++ b/src/tools/drawTools/vdrawtool.h
@@ -121,8 +121,8 @@ protected:
     void ContextMenu(QSharedPointer<Dialog> &dialog, Tool *tool, QGraphicsSceneContextMenuEvent *event,
                      bool showRemove = true)
     {
-        Q_ASSERT(tool != 0);
-        Q_ASSERT(event != 0);
+        Q_CHECK_PTR(tool);
+        Q_CHECK_PTR(event);
         if (ignoreContextMenuEvent == false)
         {
             QMenu menu;
@@ -176,7 +176,7 @@ protected:
      */
     void ShowItem(Item *item, qint64 id, Qt::GlobalColor color, bool enable)
     {
-        Q_ASSERT(item != 0);
+        Q_CHECK_PTR(item);
         if (id == item->id)
         {
             if (enable == false)
diff --git a/src/tools/drawTools/vtoolarc.cpp b/src/tools/drawTools/vtoolarc.cpp
index 40fef4eb8..d6462bb3b 100644
--- a/src/tools/drawTools/vtoolarc.cpp
+++ b/src/tools/drawTools/vtoolarc.cpp
@@ -106,7 +106,7 @@ void VToolArc::Create(const qint64 _id, const qint64 &center, const QString &rad
 
     VPointF c = *data->GeometricObject<const VPointF *>(center);
     VArc *arc = new VArc(c, calcRadius, radius, calcF1, f1, calcF2, f2 );
-    Q_ASSERT(arc != 0);
+    Q_CHECK_PTR(arc);
     qint64 id = _id;
     if (typeCreation == Tool::FromGui)
     {
diff --git a/src/tools/drawTools/vtoolcutarc.cpp b/src/tools/drawTools/vtoolcutarc.cpp
index 530ec0b61..0337e231f 100644
--- a/src/tools/drawTools/vtoolcutarc.cpp
+++ b/src/tools/drawTools/vtoolcutarc.cpp
@@ -43,13 +43,13 @@ VToolCutArc::VToolCutArc(VDomDocument *doc, VContainer *data, const qint64 &id,
     Q_ASSERT_X(arc2id > 0, Q_FUNC_INFO, "arc2id <= 0");
 
     firstArc = new VSimpleArc(arc1id, &currentColor, &factor);
-    Q_ASSERT(firstArc != 0);
+    Q_CHECK_PTR(firstArc);
     RefreshArc(firstArc, arc1id, SimpleArc::ForthPoint);
     firstArc->setParentItem(this);
     connect(firstArc, &VSimpleArc::Choosed, this, &VToolCutArc::ArcChoosed);
 
     secondArc = new VSimpleArc(arc2id, &currentColor, &factor);
-    Q_ASSERT(secondArc != 0);
+    Q_CHECK_PTR(secondArc);
     RefreshArc(secondArc, arc2id, SimpleArc::FirstPoint);
     secondArc->setParentItem(this);
     connect(secondArc, &VSimpleArc::Choosed, this, &VToolCutArc::ArcChoosed);
@@ -102,32 +102,32 @@ void VToolCutArc::Create(const qint64 _id, const QString &pointName, const QStri
         if (typeCreation == Tool::FromGui)
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p != 0);
+            Q_CHECK_PTR(p);
             id = data->AddGObject(p);
 
             VArc * ar1 = new VArc(arc1);
-            Q_ASSERT(ar1 != 0);
+            Q_CHECK_PTR(ar1);
             arc1id = data->AddGObject(ar1);
 
             VArc * ar2 = new VArc(arc2);
-            Q_ASSERT(ar2 != 0);
+            Q_CHECK_PTR(ar2);
             arc2id = data->AddGObject(ar2);
         }
         else
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p != 0);
+            Q_CHECK_PTR(p);
             data->UpdateGObject(id, p);
 
             arc1id = id + 1;
             arc2id = id + 2;
 
             VArc * ar1 = new VArc(arc1);
-            Q_ASSERT(ar1 != 0);
+            Q_CHECK_PTR(ar1);
             data->UpdateGObject(arc1id, ar1);
 
             VArc * ar2 = new VArc(arc2);
-            Q_ASSERT(ar2 != 0);
+            Q_CHECK_PTR(ar2);
             data->UpdateGObject(arc2id, ar2);
 
             if (parse != Document::FullParse)
diff --git a/src/tools/drawTools/vtoolcutspline.cpp b/src/tools/drawTools/vtoolcutspline.cpp
index 8f4fac639..c702e9c35 100644
--- a/src/tools/drawTools/vtoolcutspline.cpp
+++ b/src/tools/drawTools/vtoolcutspline.cpp
@@ -43,13 +43,13 @@ VToolCutSpline::VToolCutSpline(VDomDocument *doc, VContainer *data, const qint64
     Q_ASSERT_X(spl2id > 0, Q_FUNC_INFO, "spl2id <= 0");
 
     firstSpline = new VSimpleSpline(spl1id, &currentColor, &factor);
-    Q_ASSERT(firstSpline != 0);
+    Q_CHECK_PTR(firstSpline);
     RefreshSpline(firstSpline, spl1id, SimpleSpline::ForthPoint);
     firstSpline->setParentItem(this);
     connect(firstSpline, &VSimpleSpline::Choosed, this, &VToolCutSpline::SplineChoosed);
 
     secondSpline = new VSimpleSpline(spl2id, &currentColor, &factor);
-    Q_ASSERT(secondSpline != 0);
+    Q_CHECK_PTR(secondSpline);
     RefreshSpline(secondSpline, spl2id, SimpleSpline::FirstPoint);
     secondSpline->setParentItem(this);
     connect(secondSpline, &VSimpleSpline::Choosed, this, &VToolCutSpline::SplineChoosed);
@@ -102,35 +102,35 @@ void VToolCutSpline::Create(const qint64 _id, const QString &pointName,
         if (typeCreation == Tool::FromGui)
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p != 0);
+            Q_CHECK_PTR(p != 0);
             id = data->AddGObject(p);
 
             VSpline *spline1 = new VSpline(spl->GetP1(), spl1p2, spl1p3, *p, spl->GetKcurve());
-            Q_ASSERT(spline1);
+            Q_CHECK_PTR(spline1);
             spl1id = data->AddGObject(spline1);
             data->AddLengthSpline(spline1->name(), toMM(spline1->GetLength()));
 
             VSpline *spline2 = new VSpline(*p, spl2p2, spl2p3, spl->GetP4(), spl->GetKcurve());
-            Q_ASSERT(spline2);
+            Q_CHECK_PTR(spline2);
             spl2id = data->AddGObject(spline2);
             data->AddLengthSpline(spline2->name(), toMM(spline2->GetLength()));
         }
         else
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p != 0);
+            Q_CHECK_PTR(p);
             data->UpdateGObject(id, p);
 
             spl1id = id + 1;
             spl2id = id + 2;
 
             VSpline *spline1 = new VSpline(spl->GetP1(), spl1p2, spl1p3, *p, spl->GetKcurve());
-            Q_ASSERT(spline1);
+            Q_CHECK_PTR(spline1);
             data->UpdateGObject(spl1id, spline1);
             data->AddLengthSpline(spline1->name(), toMM(spline1->GetLength()));
 
             VSpline *spline2 = new VSpline(*p, spl2p2, spl2p3, spl->GetP4(), spl->GetKcurve());
-            Q_ASSERT(spline2);
+            Q_CHECK_PTR(spline2);
             data->UpdateGObject(spl2id, spline2);
             data->AddLengthSpline(spline2->name(), toMM(spline2->GetLength()));
 
diff --git a/src/tools/drawTools/vtoolcutsplinepath.cpp b/src/tools/drawTools/vtoolcutsplinepath.cpp
index eb95355db..fa6e20b2b 100644
--- a/src/tools/drawTools/vtoolcutsplinepath.cpp
+++ b/src/tools/drawTools/vtoolcutsplinepath.cpp
@@ -45,13 +45,13 @@ VToolCutSplinePath::VToolCutSplinePath(VDomDocument *doc, VContainer *data, cons
     Q_ASSERT_X(splPath2id > 0, Q_FUNC_INFO, "spl2id <= 0");
 
     firstSpline = new VSimpleSpline(splPath1id, &currentColor, &factor);
-    Q_ASSERT(firstSpline != 0);
+    Q_CHECK_PTR(firstSpline);
     RefreshSpline(firstSpline, splPath1id, SimpleSpline::ForthPoint);
     firstSpline->setParentItem(this);
     connect(firstSpline, &VSimpleSpline::Choosed, this, &VToolCutSplinePath::SplineChoosed);
 
     secondSpline = new VSimpleSpline(splPath2id, &currentColor, &factor);
-    Q_ASSERT(secondSpline != 0);
+    Q_CHECK_PTR(secondSpline);
     RefreshSpline(secondSpline, splPath2id, SimpleSpline::FirstPoint);
     secondSpline->setParentItem(this);
     connect(secondSpline, &VSimpleSpline::Choosed, this, &VToolCutSplinePath::SplineChoosed);
@@ -105,7 +105,7 @@ void VToolCutSplinePath::Create(const qint64 _id, const QString &pointName, cons
         if (typeCreation == Tool::FromGui)
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p);
+            Q_CHECK_PTR(p);
             id = data->AddGObject(p);
             splPath1id = id + 1;
             splPath2id = id + 2;
@@ -117,9 +117,9 @@ void VToolCutSplinePath::Create(const qint64 _id, const QString &pointName, cons
 
 
             VSplinePath *splPath1 = new VSplinePath();
-            Q_ASSERT(splPath1);
+            Q_CHECK_PTR(splPath1);
             VSplinePath *splPath2 = new VSplinePath();
-            Q_ASSERT(splPath2);
+            Q_CHECK_PTR(splPath2);
             for (qint32 i = 0; i < splPath->CountPoint(); i++)
             {
                 if (i <= p1 && i < p2)
@@ -159,7 +159,7 @@ void VToolCutSplinePath::Create(const qint64 _id, const QString &pointName, cons
         else
         {
             VPointF *p = new VPointF(point.x(), point.y(), pointName, mx, my);
-            Q_ASSERT(p);
+            Q_CHECK_PTR(p);
             data->UpdateGObject(id, p);
 
             splPath1id = id + 1;
@@ -171,9 +171,9 @@ void VToolCutSplinePath::Create(const qint64 _id, const QString &pointName, cons
             VSpline spl2 = VSpline(*p, spl2p2, spl2p3, splP2.P(), splPath->getKCurve());
 
             VSplinePath *splPath1 = new VSplinePath();
-            Q_ASSERT(splPath1 != 0);
+            Q_CHECK_PTR(splPath1);
             VSplinePath *splPath2 = new VSplinePath();
-            Q_ASSERT(splPath2 != 0);
+            Q_CHECK_PTR(splPath2);
             for (qint32 i = 0; i < splPath->CountPoint(); i++)
             {
                 if (i <= p1 && i < p2)
diff --git a/src/tools/drawTools/vtoolline.cpp b/src/tools/drawTools/vtoolline.cpp
index d7af297ce..f97520df5 100644
--- a/src/tools/drawTools/vtoolline.cpp
+++ b/src/tools/drawTools/vtoolline.cpp
@@ -74,9 +74,9 @@ void VToolLine::Create(const qint64 &_id, const qint64 &firstPoint, const qint64
                        VMainGraphicsScene *scene, VDomDocument *doc, VContainer *data,
                        const Document::Documents &parse, const Tool::Sources &typeCreation)
 {
-    Q_ASSERT(scene != 0);
-    Q_ASSERT(doc != 0);
-    Q_ASSERT(data != 0);
+    Q_CHECK_PTR(scene);
+    Q_CHECK_PTR(doc);
+    Q_CHECK_PTR(data);
     qint64 id = _id;
     if (typeCreation == Tool::FromGui)
     {
@@ -96,7 +96,7 @@ void VToolLine::Create(const qint64 &_id, const qint64 &firstPoint, const qint64
     if (parse == Document::FullParse)
     {
         VToolLine *line = new VToolLine(doc, data, id, firstPoint, secondPoint, typeCreation);
-        Q_ASSERT(line != 0);
+        Q_CHECK_PTR(line);
         scene->addItem(line);
         connect(line, &VToolLine::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, line, &VToolLine::SetFactor);
diff --git a/src/tools/drawTools/vtoolpoint.cpp b/src/tools/drawTools/vtoolpoint.cpp
index 0f33e5bd9..4baf9a1d6 100644
--- a/src/tools/drawTools/vtoolpoint.cpp
+++ b/src/tools/drawTools/vtoolpoint.cpp
@@ -34,11 +34,11 @@ VToolPoint::VToolPoint(VDomDocument *doc, VContainer *data, qint64 id, QGraphics
     QGraphicsEllipseItem(parent), radius(toPixel(2)), namePoint(0), lineName(0)
 {
     namePoint = new VGraphicsSimpleTextItem(this);
-    Q_ASSERT(namePoint != 0);
+    Q_CHECK_PTR(namePoint);
     connect(namePoint, &VGraphicsSimpleTextItem::ShowContextMenu, this, &VToolPoint::ShowContextMenu);
     namePoint->setBrush(Qt::black);
     lineName = new QGraphicsLineItem(this);
-    Q_ASSERT(lineName != 0);
+    Q_CHECK_PTR(lineName);
     lineName->setPen(QPen(Qt::black));
     connect(namePoint, &VGraphicsSimpleTextItem::NameChangePosition, this, &VToolPoint::NameChangePosition);
     this->setBrush(QBrush(Qt::NoBrush));
@@ -51,7 +51,7 @@ VToolPoint::VToolPoint(VDomDocument *doc, VContainer *data, qint64 id, QGraphics
 void VToolPoint::NameChangePosition(const QPointF &pos)
 {
     VPointF *point = new VPointF(*VAbstractTool::data.GeometricObject<const VPointF *>(id));
-    Q_ASSERT(point != 0);
+    Q_CHECK_PTR(point);
     QPointF p = pos - this->pos();
     point->setMx(p.x());
     point->setMy(p.y());
diff --git a/src/tools/drawTools/vtoolspline.cpp b/src/tools/drawTools/vtoolspline.cpp
index 102a9a34d..4a1330305 100644
--- a/src/tools/drawTools/vtoolspline.cpp
+++ b/src/tools/drawTools/vtoolspline.cpp
@@ -110,7 +110,7 @@ void VToolSpline::Create(const qint64 _id, const qint64 &p1, const qint64 &p4, c
     VPointF point1 = *data->GeometricObject<const VPointF *>(p1);
     VPointF point4 = *data->GeometricObject<const VPointF *>(p4);
     VSpline *spline = new VSpline(point1, point4, angle1, angle2, kAsm1, kAsm2, kCurve);
-    Q_ASSERT(spline != 0);
+    Q_CHECK_PTR(spline);
     qint64 id = _id;
     if (typeCreation == Tool::FromGui)
     {
diff --git a/src/tools/drawTools/vtoolsplinepath.cpp b/src/tools/drawTools/vtoolsplinepath.cpp
index 4ec238d9c..89cb8d2e7 100644
--- a/src/tools/drawTools/vtoolsplinepath.cpp
+++ b/src/tools/drawTools/vtoolsplinepath.cpp
@@ -86,7 +86,7 @@ void VToolSplinePath::Create(QSharedPointer<DialogSplinePath> &dialog, VMainGrap
                              VDomDocument *doc, VContainer *data)
 {
     VSplinePath *path = new VSplinePath(dialog->GetPath());
-    Q_ASSERT(path);
+    Q_CHECK_PTR(path);
     for (qint32 i = 0; i < path->CountPoint(); ++i)
     {
         doc->IncrementReferens((*path)[i].P().id());
diff --git a/src/tools/nodeDetails/vnodearc.cpp b/src/tools/nodeDetails/vnodearc.cpp
index 8eeb63a37..ebda652c1 100644
--- a/src/tools/nodeDetails/vnodearc.cpp
+++ b/src/tools/nodeDetails/vnodearc.cpp
@@ -57,14 +57,14 @@ void VNodeArc::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 idA
     if (parse == Document::FullParse)
     {
         VNodeArc *arc = new VNodeArc(doc, data, id, idArc, typeCreation, idTool, parent);
-        Q_ASSERT(arc != 0);
+        Q_CHECK_PTR(arc);
         doc->AddTool(id, arc);
         if (idTool != 0)
         {
             doc->IncrementReferens(idTool);
             //Some nodes we don't show on scene. Tool that create this nodes must free memory.
             VDataTool *tool = doc->getTool(idTool);
-            Q_ASSERT(tool != 0);
+            Q_CHECK_PTR(tool);
             arc->setParent(tool);
         }
         else
diff --git a/src/tools/nodeDetails/vnodepoint.cpp b/src/tools/nodeDetails/vnodepoint.cpp
index 63946d64f..d86fbccd8 100644
--- a/src/tools/nodeDetails/vnodepoint.cpp
+++ b/src/tools/nodeDetails/vnodepoint.cpp
@@ -68,14 +68,14 @@ void VNodePoint::Create(VDomDocument *doc, VContainer *data, qint64 id, qint64 i
         //TODO Need create garbage collector and remove all nodes, what we don't use.
         //Better check garbage before each saving file. Check only modeling tags.
         VNodePoint *point = new VNodePoint(doc, data, id, idPoint, typeCreation, idTool, parent);
-        Q_ASSERT(point != 0);
+        Q_CHECK_PTR(point);
         doc->AddTool(id, point);
         if (idTool != 0)
         {
             doc->IncrementReferens(idTool);
             //Some nodes we don't show on scene. Tool that create this nodes must free memory.
             VDataTool *tool = doc->getTool(idTool);
-            Q_ASSERT(tool != 0);
+            Q_CHECK_PTR(tool);
             point->setParent(tool);
         }
         else
diff --git a/src/tools/nodeDetails/vnodespline.cpp b/src/tools/nodeDetails/vnodespline.cpp
index 51687667a..7ec99d27b 100644
--- a/src/tools/nodeDetails/vnodespline.cpp
+++ b/src/tools/nodeDetails/vnodespline.cpp
@@ -66,7 +66,7 @@ VNodeSpline *VNodeSpline::Create(VDomDocument *doc, VContainer *data, qint64 id,
             doc->IncrementReferens(idTool);
             //Some nodes we don't show on scene. Tool that create this nodes must free memory.
             VDataTool *tool = doc->getTool(idTool);
-            Q_ASSERT(tool != 0);
+            Q_CHECK_PTR(tool);
             spl->setParent(tool);
         }
         else
diff --git a/src/tools/nodeDetails/vnodesplinepath.cpp b/src/tools/nodeDetails/vnodesplinepath.cpp
index 06a801413..54dc91ea5 100644
--- a/src/tools/nodeDetails/vnodesplinepath.cpp
+++ b/src/tools/nodeDetails/vnodesplinepath.cpp
@@ -59,7 +59,7 @@ void VNodeSplinePath::Create(VDomDocument *doc, VContainer *data, qint64 id, qin
     if (parse == Document::FullParse)
     {
         VNodeSplinePath *splPath = new VNodeSplinePath(doc, data, id, idSpline, typeCreation, idTool, parent);
-        Q_ASSERT(splPath != 0);
+        Q_CHECK_PTR(splPath);
         doc->AddTool(id, splPath);
         const VSplinePath *path = data->GeometricObject<const VSplinePath *>(id);
         const QVector<VSplinePoint> *points = path->GetPoint();
@@ -70,7 +70,7 @@ void VNodeSplinePath::Create(VDomDocument *doc, VContainer *data, qint64 id, qin
                 doc->IncrementReferens(idTool);
                 //Some nodes we don't show on scene. Tool that create this nodes must free memory.
                 VDataTool *tool = doc->getTool(idTool);
-                Q_ASSERT(tool != 0);
+                Q_CHECK_PTR(tool);
                 splPath->setParent(tool);
             }
             else
diff --git a/src/tools/vabstracttool.cpp b/src/tools/vabstracttool.cpp
index e552ccb58..a6565200f 100644
--- a/src/tools/vabstracttool.cpp
+++ b/src/tools/vabstracttool.cpp
@@ -72,7 +72,7 @@ const QString VAbstractTool::TypeLineDashDotDotLine = QStringLiteral("dashDotDot
 VAbstractTool::VAbstractTool(VDomDocument *doc, VContainer *data, qint64 id, QObject *parent)
     :VDataTool(data, parent), doc(doc), id(id), baseColor(Qt::black), currentColor(Qt::black), typeLine(TypeLineLine)
 {
-    Q_ASSERT(doc != 0);
+    Q_CHECK_PTR(doc);
     connect(this, &VAbstractTool::toolhaveChange, this->doc, &VDomDocument::haveLiteChange);
     connect(this->doc, &VDomDocument::FullUpdateFromFile, this, &VAbstractTool::FullUpdateFromFile);
     connect(this, &VAbstractTool::FullUpdateTree, this->doc, &VDomDocument::FullUpdateTree);
diff --git a/src/tools/vdatatool.cpp b/src/tools/vdatatool.cpp
index fe6b58ec4..5d857321a 100644
--- a/src/tools/vdatatool.cpp
+++ b/src/tools/vdatatool.cpp
@@ -30,7 +30,7 @@
 
 VDataTool::VDataTool(VContainer *data, QObject *parent): QObject(parent), data(*data), _referens(1)
 {
-    Q_ASSERT(data != 0);
+    Q_CHECK_PTR(data);
 }
 
 VDataTool &VDataTool::operator =(const VDataTool &tool)
diff --git a/src/tools/vtooldetail.cpp b/src/tools/vtooldetail.cpp
index bab623d8b..9705801c8 100644
--- a/src/tools/vtooldetail.cpp
+++ b/src/tools/vtooldetail.cpp
@@ -390,9 +390,9 @@ template <typename Tool>
 void VToolDetail::InitTool(VMainGraphicsScene *scene, const VNodeDetail &node)
 {
     QHash<qint64, VDataTool*>* tools = doc->getTools();
-    Q_ASSERT(tools != 0);
+    Q_CHECK_PTR(tools);
     Tool *tool = qobject_cast<Tool*>(tools->value(node.getId()));
-    Q_ASSERT(tool != 0);
+    Q_CHECK_PTR(tool);
     connect(tool, &Tool::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
     tool->setParentItem(this);
 }
diff --git a/src/tools/vtooldetail.h b/src/tools/vtooldetail.h
index 51d1ac78f..f676e28c5 100644
--- a/src/tools/vtooldetail.h
+++ b/src/tools/vtooldetail.h
@@ -67,7 +67,7 @@ public:
     {
         //We can't use exist object. Need create new.
         T *node = new T(*data->GeometricObject<const T *>(id));
-        Q_ASSERT(node != 0);
+        Q_CHECK_PTR(node);
         node->setMode(Draw::Modeling);
         return data->AddGObject(node);
     }
diff --git a/src/tools/vtooluniondetails.cpp b/src/tools/vtooluniondetails.cpp
index 834763205..2a17f780a 100644
--- a/src/tools/vtooluniondetails.cpp
+++ b/src/tools/vtooluniondetails.cpp
@@ -72,13 +72,13 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
             else
             {
                 VPointF *point = new VPointF(*data->GeometricObject<const VPointF *>(det.at(i).getId()));
-                Q_ASSERT(point != 0);
+                Q_CHECK_PTR(point);
                 point->setMode(Draw::Modeling);
                 BiasRotatePoint(point, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                 angle);
                 idObject = data->AddGObject(point);
                 VPointF *point1 = new VPointF(*point);
-                Q_ASSERT(point1 != 0);
+                Q_CHECK_PTR(point1);
                 point1->setMode(Draw::Modeling);
                 id = data->AddGObject(point1);
                 VNodePoint::Create(doc, data, id, idObject, Document::FullParse, Tool::FromGui, idTool, tool);
@@ -99,7 +99,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                 VPointF p2 = VPointF(arc->GetP2().x(), arc->GetP2().y(), "A", 0, 0);
                 BiasRotatePoint(&p2, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 VPointF *center = new VPointF(arc->GetCenter());
-                Q_ASSERT(center != 0);
+                Q_CHECK_PTR(center);
                 BiasRotatePoint(center, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                 angle);
 
@@ -111,12 +111,12 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                 VArc *arc1 = new VArc(*center, arc->GetRadius(), arc->GetFormulaRadius(),
                                  l1.angle(), QString().setNum(l1.angle()), l2.angle(),
                                  QString().setNum(l2.angle()));
-                Q_ASSERT(arc1 != 0);
+                Q_CHECK_PTR(arc1);
                 arc1->setMode(Draw::Modeling);
                 idObject = data->AddGObject(arc1);
 
                 VArc *arc2 = new VArc(*arc1);
-                Q_ASSERT(arc2 != 0);
+                Q_CHECK_PTR(arc2);
                 arc2->setMode(Draw::Modeling);
                 id = data->AddGObject(arc2);
 
@@ -135,7 +135,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                 const VSpline *spline = data->GeometricObject<const VSpline *>(det.at(i).getId());
 
                 VPointF *p1 = new VPointF(spline->GetP1());
-                Q_ASSERT(p1 != 0);
+                Q_CHECK_PTR(p1);
                 BiasRotatePoint(p1, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 qint64 idP1 = data->AddGObject(p1);
 
@@ -146,17 +146,17 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                 BiasRotatePoint(&p3, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
 
                 VPointF *p4 = new VPointF(spline->GetP4());
-                Q_ASSERT(p4 != 0);
+                Q_CHECK_PTR(p4);
                 BiasRotatePoint(p4, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 qint64 idP4 = data->AddGObject(p4);
 
                 VSpline *spl = new VSpline(*p1, p2.toQPointF(), p3.toQPointF(), *p4, spline->GetKcurve(), 0,
                 Draw::Modeling);
-                Q_ASSERT(spl != 0);
+                Q_CHECK_PTR(spl);
                 idObject = data->AddGObject(spl);
 
                 VSpline *spl1 = new VSpline(*spl);
-                Q_ASSERT(spl1 != 0);
+                Q_CHECK_PTR(spl1);
                 spl1->setMode(Draw::Modeling);
                 id = data->AddGObject(spl1);
                 VNodeSpline::Create(doc, data, id, idObject, Document::FullParse, Tool::FromGui, idTool, tool);
@@ -172,7 +172,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
             else
             {
                 VSplinePath *path = new VSplinePath();
-                Q_ASSERT(path != 0);
+                Q_CHECK_PTR(path);
                 path->setMode(Draw::Modeling);
                 const VSplinePath *splinePath = data->GeometricObject<const VSplinePath *>(det.at(i).getId());
                 qint32 k = splinePath->getMaxCountPoints();
@@ -183,7 +183,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                             splinePath->at(i).KAsm1(), splinePath->getKCurve());
 
                     VPointF *p1 = new VPointF(spline.GetP1());
-                    Q_ASSERT(p1 != 0);
+                    Q_CHECK_PTR(p1);
                     BiasRotatePoint(p1, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                     angle);
                     qint64 idP1 = data->AddGObject(p1);
@@ -198,7 +198,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                                     angle);
 
                     VPointF *p4 = new VPointF(spline.GetP4());
-                    Q_ASSERT(p4 != 0);
+                    Q_CHECK_PTR(p4);
                     BiasRotatePoint(p4, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                     angle);
                     qint64 idP4 = data->AddGObject(p4);
@@ -221,7 +221,7 @@ void VToolUnionDetails::AddToNewDetail(QObject *tool, VDomDocument *doc, VContai
                 idObject = data->AddGObject(path);
 
                 VSplinePath *path1 = new VSplinePath(*path);
-                Q_ASSERT(path1 != 0);
+                Q_CHECK_PTR(path1);
                 path1->setMode(Draw::Modeling);
                 id = data->AddGObject(path1);
                 VNodeSplinePath::Create(doc, data, id, idObject, Document::FullParse, Tool::FromGui, idTool, tool);
@@ -246,7 +246,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
             if (qFuzzyCompare(dx+1, 1) == false || qFuzzyCompare(dy+1, 1) == false || pRotate != 0)
             {
                 VPointF *point = new VPointF(*data->GeometricObject<const VPointF *>(det.at(i).getId()));
-                Q_ASSERT(point != 0);
+                Q_CHECK_PTR(point);
                 point->setMode(Draw::Modeling);
                 BiasRotatePoint(point, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 ++idCount;
@@ -266,7 +266,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                 VPointF p2 = VPointF(arc->GetP2());
                 BiasRotatePoint(&p2, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 VPointF *center = new VPointF(arc->GetCenter());
-                Q_ASSERT(center != 0);
+                Q_CHECK_PTR(center);
                 BiasRotatePoint(center, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                 angle);
 
@@ -277,7 +277,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                 data->UpdateGObject(idDetail+idCount, center);
                 VArc *arc1 = new VArc(*center, arc->GetRadius(), arc->GetFormulaRadius(), l1.angle(),
                                      QString().setNum(l1.angle()), l2.angle(), QString().setNum(l2.angle()));
-                Q_ASSERT(arc1);
+                Q_CHECK_PTR(arc1);
                 arc1->setMode(Draw::Modeling);
                 ++idCount;
                 data->UpdateGObject(idDetail+idCount, arc1);
@@ -293,7 +293,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                 const VSpline *spline = data->GeometricObject<const VSpline *>(det.at(i).getId());
 
                 VPointF *p1 = new VPointF(spline->GetP1());
-                Q_ASSERT(p1 != 0);
+                Q_CHECK_PTR(p1);
                 BiasRotatePoint(p1, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 ++idCount;
                 data->UpdateGObject(idDetail+idCount, p1);
@@ -305,7 +305,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                 BiasRotatePoint(&p3, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
 
                 VPointF *p4 = new VPointF(spline->GetP4());
-                Q_ASSERT(p4 != 0);
+                Q_CHECK_PTR(p4);
                 BiasRotatePoint(p4, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(), angle);
                 ++idCount;
                 data->UpdateGObject(idDetail+idCount, p4);
@@ -313,7 +313,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                 VSpline *spl = new VSpline(*p1, p2.toQPointF(), p3.toQPointF(), *p4, spline->GetKcurve(), 0,
                 Draw::Modeling);
 
-                Q_ASSERT(spl != 0);
+                Q_CHECK_PTR(spl);
                 ++idCount;
                 data->UpdateGObject(idDetail+idCount, spl);
 
@@ -326,10 +326,10 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
             if (qFuzzyCompare(dx+1, 1) == false || qFuzzyCompare(dy+1, 1) == false || pRotate != 0)
             {
                 VSplinePath *path = new VSplinePath();
-                Q_ASSERT(path != 0);
+                Q_CHECK_PTR(path);
                 path->setMode(Draw::Modeling);
                 const VSplinePath *splinePath = data->GeometricObject<const VSplinePath *>(det.at(i).getId());
-                Q_ASSERT(splinePath != 0);
+                Q_CHECK_PTR(splinePath);
                 qint32 k = splinePath->getMaxCountPoints();
                 for (qint32 i = 1; i <= splinePath->Count(); ++i)
                 {
@@ -338,7 +338,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                             splinePath->at(i).KAsm1(), splinePath->getKCurve());
 
                     VPointF *p1 = new VPointF(spline.GetP1());
-                    Q_ASSERT(p1 != 0);
+                    Q_CHECK_PTR(p1);
                     BiasRotatePoint(p1, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                     angle);
                     ++idCount;
@@ -354,7 +354,7 @@ void VToolUnionDetails::UpdatePoints(const qint64 &idDetail, VContainer *data, c
                                     angle);
 
                     VPointF *p4 = new VPointF(spline.GetP4());
-                    Q_ASSERT(p4 != 0);
+                    Q_CHECK_PTR(p4);
                     BiasRotatePoint(p4, dx, dy, data->GeometricObject<const VPointF *>(pRotate)->toQPointF(),
                                     angle);
                     ++idCount;
diff --git a/src/widgets/doubledelegate.cpp b/src/widgets/doubledelegate.cpp
index b710ffdc8..1b2bccf23 100644
--- a/src/widgets/doubledelegate.cpp
+++ b/src/widgets/doubledelegate.cpp
@@ -37,7 +37,7 @@ QWidget *DoubleSpinBoxDelegate::createEditor(QWidget *parent, const QStyleOption
     Q_UNUSED(option);
     Q_UNUSED(index);
     QDoubleSpinBox *editor = new QDoubleSpinBox(parent);
-    Q_ASSERT(editor != 0);
+    Q_CHECK_PTR(editor);
     editor->setMinimum(-10000.0);
     editor->setMaximum(10000.0);
     connect(editor, &QDoubleSpinBox::editingFinished, this, &DoubleSpinBoxDelegate::commitAndCloseEditor);
@@ -50,7 +50,7 @@ void DoubleSpinBoxDelegate::setEditorData(QWidget *editor, const QModelIndex &in
     qreal value = index.model()->data(index, Qt::EditRole).toDouble();
 
     QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox*>(editor);
-    Q_ASSERT(spinBox != 0);
+    Q_CHECK_PTR(spinBox);
     spinBox->setValue(value);
 }
 
@@ -58,7 +58,7 @@ void DoubleSpinBoxDelegate::setEditorData(QWidget *editor, const QModelIndex &in
 void DoubleSpinBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
 {
     QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox*>(editor);
-    Q_ASSERT(spinBox != 0);
+    Q_CHECK_PTR(spinBox);
     spinBox->interpretText();
     qreal value = spinBox->value();
 
@@ -76,7 +76,7 @@ void DoubleSpinBoxDelegate::updateEditorGeometry(QWidget *editor, const QStyleOp
 void DoubleSpinBoxDelegate::commitAndCloseEditor()
 {
     QDoubleSpinBox *spinBox = qobject_cast<QDoubleSpinBox*>(sender());
-    Q_ASSERT(spinBox != 0);
+    Q_CHECK_PTR(spinBox);
     qreal value = spinBox->value();
     if (qFuzzyCompare ( lastValue, value ) == false)
     {
diff --git a/src/widgets/vmaingraphicsview.cpp b/src/widgets/vmaingraphicsview.cpp
index 7bb45251c..ada2d8c81 100644
--- a/src/widgets/vmaingraphicsview.cpp
+++ b/src/widgets/vmaingraphicsview.cpp
@@ -54,7 +54,7 @@ void VMainGraphicsView::wheelEvent(QWheelEvent *event)
     }
 
     QTimeLine *anim = new QTimeLine(300, this);
-    Q_ASSERT(anim != 0);
+    Q_CHECK_PTR(anim);
     anim->setUpdateInterval(20);
 
     if (QApplication::keyboardModifiers() == Qt::ControlModifier)
diff --git a/src/widgets/vtablegraphicsview.cpp b/src/widgets/vtablegraphicsview.cpp
index 44dee0872..2e99a518c 100644
--- a/src/widgets/vtablegraphicsview.cpp
+++ b/src/widgets/vtablegraphicsview.cpp
@@ -62,7 +62,7 @@ void VTableGraphicsView::MirrorItem()
         for ( qint32 i = 0; i < list.count(); ++i )
         {
             QGraphicsItem *item = list.at(i);
-            Q_ASSERT(item != 0);
+            Q_CHECK_PTR(item);
             QRectF itemRectOld = item->sceneBoundingRect();
             //Get the current transform
             QTransform transform(item->transform());
@@ -170,7 +170,7 @@ void VTableGraphicsView::rotateIt()
         for ( qint32 i = 0; i < list.count(); ++i )
         {
             QGraphicsItem *item = list.at(i);
-            Q_ASSERT(item != 0);
+            Q_CHECK_PTR(item);
             item->setTransformOriginPoint(item->boundingRect().center());
             item->setRotation(item->rotation() + 90);
         }
diff --git a/src/xml/vdomdocument.cpp b/src/xml/vdomdocument.cpp
index 2ba893dab..8147ce4f0 100644
--- a/src/xml/vdomdocument.cpp
+++ b/src/xml/vdomdocument.cpp
@@ -335,8 +335,8 @@ bool VDomDocument::GetActivNodeElement(const QString& name, QDomElement &element
 void VDomDocument::Parse(const Document::Documents &parse, VMainGraphicsScene *sceneDraw,
                          VMainGraphicsScene *sceneDetail)
 {
-    Q_ASSERT(sceneDraw != 0);
-    Q_ASSERT(sceneDetail != 0);
+    Q_CHECK_PTR(sceneDraw);
+    Q_CHECK_PTR(sceneDetail);
     if (parse == Document::FullParse)
     {
         TestUniqueId();
@@ -577,8 +577,8 @@ void VDomDocument::ParseDrawElement(VMainGraphicsScene *sceneDraw, VMainGraphics
 void VDomDocument::ParseDrawMode(VMainGraphicsScene *sceneDraw, VMainGraphicsScene *sceneDetail,
                                  const QDomNode& node, const Document::Documents &parse, const Draw::Draws &mode)
 {
-    Q_ASSERT(sceneDraw != 0);
-    Q_ASSERT(sceneDetail != 0);
+    Q_CHECK_PTR(sceneDraw);
+    Q_CHECK_PTR(sceneDetail);
     VMainGraphicsScene *scene = 0;
     if (mode == Draw::Calculation)
     {
@@ -627,7 +627,7 @@ void VDomDocument::ParseDrawMode(VMainGraphicsScene *sceneDraw, VMainGraphicsSce
 void VDomDocument::ParseDetailElement(VMainGraphicsScene *sceneDetail, const QDomElement &domElement,
                                       const Document::Documents &parse)
 {
-    Q_ASSERT(sceneDetail != 0);
+    Q_CHECK_PTR(sceneDetail);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     try
     {
@@ -697,7 +697,7 @@ void VDomDocument::ParseDetailElement(VMainGraphicsScene *sceneDetail, const QDo
 void VDomDocument::ParseDetails(VMainGraphicsScene *sceneDetail, const QDomElement &domElement,
                                 const Document::Documents &parse)
 {
-    Q_ASSERT(sceneDetail != 0);
+    Q_CHECK_PTR(sceneDetail);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     QDomNode domNode = domElement.firstChild();
     while (domNode.isNull() == false)
@@ -720,7 +720,7 @@ void VDomDocument::ParseDetails(VMainGraphicsScene *sceneDetail, const QDomEleme
 void VDomDocument::ParsePointElement(VMainGraphicsScene *scene, const QDomElement& domElement,
                                      const Document::Documents &parse, const QString& type)
 {
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     Q_ASSERT_X(type.isEmpty() == false, Q_FUNC_INFO, "type of point is empty");
     if (type == VToolSinglePoint::ToolType)
@@ -744,7 +744,7 @@ void VDomDocument::ParsePointElement(VMainGraphicsScene *scene, const QDomElemen
             if (parse == Document::FullParse)
             {
                 spoint = new VToolSinglePoint(this, data, id, Tool::FromFile);
-                Q_ASSERT(spoint != 0);
+                Q_CHECK_PTR(spoint);
                 scene->addItem(spoint);
                 connect(spoint, &VToolSinglePoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
                 connect(scene, &VMainGraphicsScene::NewFactor, spoint, &VToolSinglePoint::SetFactor);
@@ -1093,7 +1093,7 @@ void VDomDocument::ParsePointElement(VMainGraphicsScene *scene, const QDomElemen
 void VDomDocument::ParseLineElement(VMainGraphicsScene *scene, const QDomElement &domElement,
                                     const Document::Documents &parse)
 {
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     try
     {
@@ -1114,7 +1114,7 @@ void VDomDocument::ParseLineElement(VMainGraphicsScene *scene, const QDomElement
 void VDomDocument::ParseSplineElement(VMainGraphicsScene *scene, const QDomElement &domElement,
                                       const Document::Documents &parse, const QString &type)
 {
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     Q_ASSERT_X(type.isEmpty() == false, Q_FUNC_INFO, "type of spline is empty");
     if (type == VToolSpline::ToolType)
@@ -1148,7 +1148,7 @@ void VDomDocument::ParseSplineElement(VMainGraphicsScene *scene, const QDomEleme
             qint64 id = GetParametrId(domElement);
             qreal kCurve = GetParametrDouble(domElement, VAbstractTool::AttrKCurve, "1.0");
             VSplinePath *path = new VSplinePath(kCurve);
-            Q_ASSERT(path != 0);
+            Q_CHECK_PTR(path);
 
             QDomNodeList nodeList = domElement.childNodes();
             qint32 num = nodeList.size();
@@ -1193,7 +1193,7 @@ void VDomDocument::ParseSplineElement(VMainGraphicsScene *scene, const QDomEleme
             qint64 idObject = GetParametrLongLong(domElement, VAbstractNode::AttrIdObject, "0");
             qint64 idTool = GetParametrLongLong(domElement, VAbstractNode::AttrIdTool, "0");
             VSpline *spl = new VSpline(*data->GeometricObject<const VSpline *>(idObject));
-            Q_ASSERT(spl != 0);
+            Q_CHECK_PTR(spl);
             spl->setIdObject(idObject);
             spl->setMode(Draw::Modeling);
             data->UpdateGObject(id, spl);
@@ -1215,7 +1215,7 @@ void VDomDocument::ParseSplineElement(VMainGraphicsScene *scene, const QDomEleme
             qint64 idObject = GetParametrLongLong(domElement, VAbstractNode::AttrIdObject, "0");
             qint64 idTool = GetParametrLongLong(domElement, VAbstractNode::AttrIdTool, "0");
             VSplinePath *path = new VSplinePath(*data->GeometricObject<const VSplinePath *>(idObject));
-            Q_ASSERT(path != 0);
+            Q_CHECK_PTR(path);
             path->setIdObject(idObject);
             path->setMode(Draw::Modeling);
             data->UpdateGObject(id, path);
@@ -1234,7 +1234,7 @@ void VDomDocument::ParseSplineElement(VMainGraphicsScene *scene, const QDomEleme
 void VDomDocument::ParseArcElement(VMainGraphicsScene *scene, const QDomElement &domElement,
                                    const Document::Documents &parse, const QString &type)
 {
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     Q_ASSERT_X(type.isEmpty() == false, Q_FUNC_INFO, "type of spline is empty");
     if (type == VToolArc::ToolType)
@@ -1266,7 +1266,7 @@ void VDomDocument::ParseArcElement(VMainGraphicsScene *scene, const QDomElement
             qint64 idObject = GetParametrLongLong(domElement, VAbstractNode::AttrIdObject, "0");
             qint64 idTool = GetParametrLongLong(domElement, VAbstractNode::AttrIdTool, "0");
             VArc *arc = new VArc(*data->GeometricObject<const VArc *>(idObject));
-            Q_ASSERT(arc != 0);
+            Q_CHECK_PTR(arc);
             arc->setIdObject(idObject);
             arc->setMode(Draw::Modeling);
             data->UpdateGObject(id, arc);
@@ -1285,7 +1285,7 @@ void VDomDocument::ParseArcElement(VMainGraphicsScene *scene, const QDomElement
 void VDomDocument::ParseToolsElement(VMainGraphicsScene *scene, const QDomElement &domElement,
                                      const Document::Documents &parse, const QString &type)
 {
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     Q_ASSERT_X(domElement.isNull() == false, Q_FUNC_INFO, "domElement is null");
     Q_ASSERT_X(type.isEmpty() == false, Q_FUNC_INFO, "type of spline is empty");
     if (type == VToolUnionDetails::ToolType)
@@ -1315,7 +1315,7 @@ void VDomDocument::ParseToolsElement(VMainGraphicsScene *scene, const QDomElemen
 void VDomDocument::FullUpdateTree()
 {
     VMainGraphicsScene *scene = new VMainGraphicsScene();
-    Q_ASSERT(scene != 0);
+    Q_CHECK_PTR(scene);
     try
     {
         Parse(Document::LiteParse, scene, scene);
@@ -1403,16 +1403,16 @@ void VDomDocument::setCurrentData()
 void VDomDocument::AddTool(const qint64 &id, VDataTool *tool)
 {
     Q_ASSERT_X(id > 0, Q_FUNC_INFO, "id <= 0");
-    Q_ASSERT(tool != 0);
+    Q_CHECK_PTR(tool);
     tools.insert(id, tool);
 }
 
 void VDomDocument::UpdateToolData(const qint64 &id, VContainer *data)
 {
     Q_ASSERT_X(id > 0, Q_FUNC_INFO, "id <= 0");
-    Q_ASSERT(data != 0);
+    Q_CHECK_PTR(data);
     VDataTool *tool = tools.value(id);
-    Q_ASSERT(tool != 0);
+    Q_CHECK_PTR(tool);
     tool->VDataTool::setData(data);
 }
 
@@ -1420,7 +1420,7 @@ void VDomDocument::IncrementReferens(qint64 id) const
 {
     Q_ASSERT_X(id > 0, Q_FUNC_INFO, "id <= 0");
     VDataTool *tool = tools.value(id);
-    Q_ASSERT(tool != 0);
+    Q_CHECK_PTR(tool);
     tool->incrementReferens();
 }