diff --git a/src/libkst/timezones.cpp b/src/libkst/timezones.cpp
diff --git a/src/libkst/timezones.h b/src/libkst/timezones.h
diff --git a/src/libkstapp/aboutdialog.h b/src/libkstapp/aboutdialog.h
@@ -25,7 +25,7 @@ class AboutDialog : public QDialog, Ui::AboutDialog
 {
   Q_OBJECT
   public:
-    AboutDialog(QWidget *parent);
+    explicit AboutDialog(QWidget *parent);
     virtual ~AboutDialog();
 
   private Q_SLOTS:

diff --git a/src/libkstapp/applicationsettingsdialog.h b/src/libkstapp/applicationsettingsdialog.h
@@ -30,7 +30,7 @@ class ApplicationSettingsDialog : public Dialog
 {
   Q_OBJECT
   public:
-    ApplicationSettingsDialog(QWidget *parent = 0);
+    explicit ApplicationSettingsDialog(QWidget *parent = 0);
     virtual ~ApplicationSettingsDialog();
 
   private Q_SLOTS:

diff --git a/src/libkstapp/arrowitem.h b/src/libkstapp/arrowitem.h
@@ -22,7 +22,7 @@ class ArrowItem : public LineItem
 {
   Q_OBJECT
   public:
-    ArrowItem(View *parent);
+    explicit ArrowItem(View *parent);
     virtual ~ArrowItem();
 
     const QString defaultsGroupName() const {return ArrowItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/arrowpropertiestab.h b/src/libkstapp/arrowpropertiestab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class ArrowPropertiesTab : public DialogTab, Ui::ArrowPropertiesTab {
   Q_OBJECT
   public:
-    ArrowPropertiesTab(QWidget *parent = 0);
+    explicit ArrowPropertiesTab(QWidget *parent = 0);
     virtual ~ArrowPropertiesTab();
 
     bool startArrowHead();

diff --git a/src/libkstapp/axistab.h b/src/libkstapp/axistab.h
@@ -25,7 +25,7 @@ namespace Kst {
 class AxisTab : public DialogTab, Ui::AxisTab {
   Q_OBJECT
   public:
-    AxisTab(QWidget *parent = 0);
+    explicit AxisTab(QWidget *parent = 0);
     virtual ~AxisTab();
 
     bool drawAxisMajorTicks() const;

diff --git a/src/libkstapp/boxitem.h b/src/libkstapp/boxitem.h
@@ -22,7 +22,7 @@ class BoxItem : public ViewItem
 {
   Q_OBJECT
   public:
-    BoxItem(View *parent);
+    explicit BoxItem(View *parent);
     virtual ~BoxItem();
 
     const QString defaultsGroupName() const {return BoxItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/bugreportwizard.h b/src/libkstapp/bugreportwizard.h
@@ -27,7 +27,7 @@ class BugReportWizard : public QDialog, Ui::BugReportWizard
 {
   Q_OBJECT
   public:
-    BugReportWizard(QWidget *parent);
+    explicit BugReportWizard(QWidget *parent);
     virtual ~BugReportWizard();
 
   private slots:

diff --git a/src/libkstapp/buttonitem.h b/src/libkstapp/buttonitem.h
@@ -31,7 +31,7 @@ class ButtonItem : public ViewItem
     QPushButton* _pushButton;
     QGraphicsProxyWidget* _proxy;
   public:
-    ButtonItem(View *parent);
+    explicit ButtonItem(View *parent);
     virtual ~ButtonItem();
 
     const QString defaultsGroupName() const {return ButtonItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/cartesianrenderitem.h b/src/libkstapp/cartesianrenderitem.h
@@ -20,7 +20,7 @@ class CartesianRenderItem : public PlotRenderItem
 {
   Q_OBJECT
   public:
-    CartesianRenderItem(PlotItem *parentItem);
+    explicit CartesianRenderItem(PlotItem *parentItem);
     virtual ~CartesianRenderItem();
 
     virtual void saveInPlot(QXmlStreamWriter &xml);

diff --git a/src/libkstapp/changedatasampledialog.h b/src/libkstapp/changedatasampledialog.h
@@ -27,7 +27,7 @@ class ChangeDataSampleDialog : public QDialog, Ui::ChangeDataSampleDialog
 {
   Q_OBJECT
   public:
-    ChangeDataSampleDialog(QWidget *parent);
+    explicit ChangeDataSampleDialog(QWidget *parent);
     virtual ~ChangeDataSampleDialog();
 
     void show();

diff --git a/src/libkstapp/changefiledialog.h b/src/libkstapp/changefiledialog.h
@@ -31,7 +31,7 @@ class ChangeFileDialog : public QDialog, Ui::ChangeFileDialog
 {
   Q_OBJECT
   public:
-    ChangeFileDialog(QWidget *parent);
+    explicit ChangeFileDialog(QWidget *parent);
     virtual ~ChangeFileDialog();
 
     void show();

diff --git a/src/libkstapp/choosecolordialog.h b/src/libkstapp/choosecolordialog.h
@@ -31,7 +31,7 @@ class ChooseColorDialog : public QDialog, Ui::ChooseColorDialog
 {
   Q_OBJECT
   public:
-    ChooseColorDialog(QWidget *parent);
+    explicit ChooseColorDialog(QWidget *parent);
     virtual ~ChooseColorDialog();
 
     void show();

diff --git a/src/libkstapp/circleitem.h b/src/libkstapp/circleitem.h
@@ -24,7 +24,7 @@ class CircleItem : public ViewItem
 {
   Q_OBJECT
   public:
-    CircleItem(View *parent);
+    explicit CircleItem(View *parent);
     virtual ~CircleItem();
 
     const QString defaultsGroupName() const {return CircleItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/csddialog.h b/src/libkstapp/csddialog.h
@@ -29,7 +29,7 @@ namespace Kst {
 class CSDTab : public DataTab, Ui::CSDTab {
   Q_OBJECT
   public:
-    CSDTab(QWidget *parent = 0);
+    explicit CSDTab(QWidget *parent = 0);
     virtual ~CSDTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/curvedialog.h b/src/libkstapp/curvedialog.h
@@ -27,7 +27,7 @@ namespace Kst {
 class CurveTab : public DataTab, Ui::CurveTab {
   Q_OBJECT
   public:
-    CurveTab(QWidget *parent = 0);
+    explicit CurveTab(QWidget *parent = 0);
     virtual ~CurveTab();
 
     VectorPtr xVector() const;

diff --git a/src/libkstapp/datatab.h b/src/libkstapp/datatab.h
@@ -26,7 +26,7 @@ class DataTab : public DialogTab
 {
   Q_OBJECT
   public:
-    DataTab(QWidget *parent);
+    explicit DataTab(QWidget *parent);
     virtual ~DataTab();
 
     virtual void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/datawizard.h b/src/libkstapp/datawizard.h
@@ -68,7 +68,7 @@ class DataWizardPageVectors : public QWizardPage, Ui::DataWizardPageVectors
 {
   Q_OBJECT
   public:
-    DataWizardPageVectors(QWidget *parent);
+    explicit DataWizardPageVectors(QWidget *parent);
     virtual ~DataWizardPageVectors();
 
     bool isComplete() const;
@@ -92,7 +92,7 @@ class DataWizardPageFilters : public QWizardPage, Ui::DataWizardPageFilters
 {
   Q_OBJECT
   public:
-    DataWizardPageFilters(QWidget *parent);
+    explicit DataWizardPageFilters(QWidget *parent);
     virtual ~DataWizardPageFilters();
 
 };
@@ -105,7 +105,7 @@ class DataWizardPagePlot : public QWizardPage, Ui::DataWizardPagePlot
 
     enum PlotTabPlacement { CurrentTab, NewTab, SeparateTabs };
 
-    DataWizardPagePlot(QWidget *parent);
+    explicit DataWizardPagePlot(QWidget *parent);
     virtual ~DataWizardPagePlot();
 
     CurvePlacement::Layout layout() const;
@@ -178,7 +178,7 @@ class DataWizard : public QWizard
   public:
     enum DataWizardPages {PageDataSource, PageVectors, PageDataPresentation, PageFilters, PagePlot};
 
-    DataWizard(QWidget *parent, const QString& fn = QString());
+    explicit DataWizard(QWidget *parent, const QString& fn = QString());
     virtual ~DataWizard();
 
     QStringList dataSourceFieldList() const;

diff --git a/src/libkstapp/debugdialog.h b/src/libkstapp/debugdialog.h
@@ -28,7 +28,7 @@ class DebugDialog : public QDialog, Ui::DebugDialog
 {
   Q_OBJECT
   public:
-    DebugDialog(QWidget *parent);
+    explicit DebugDialog(QWidget *parent);
     virtual ~DebugDialog();
 
     void setObjectStore(ObjectStore* store) { _store = store; }

diff --git a/src/libkstapp/debugnotifier.h b/src/libkstapp/debugnotifier.h
@@ -29,7 +29,7 @@ namespace Kst {
 class DebugNotifier : public QLabel {
   Q_OBJECT
   public:
-    DebugNotifier(QWidget *parent);
+    explicit DebugNotifier(QWidget *parent);
     ~DebugNotifier();
 
   Q_SIGNALS:

diff --git a/src/libkstapp/defaultlabelpropertiestab.h b/src/libkstapp/defaultlabelpropertiestab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class DefaultLabelPropertiesTab : public DialogTab, Ui_DefaultLabelPropertiesTab {
   Q_OBJECT
   public:
-    DefaultLabelPropertiesTab(QWidget *parent = 0);
+    explicit DefaultLabelPropertiesTab(QWidget *parent = 0);
     virtual ~DefaultLabelPropertiesTab();
 
     double referenceViewWidth() const;

diff --git a/src/libkstapp/dialog.h b/src/libkstapp/dialog.h
@@ -32,7 +32,7 @@ class Dialog : public QDialog, public Ui::Dialog
   public:
     friend class DialogSI;
     friend class ScriptServer;
-    Dialog(QWidget *parent = 0);
+    explicit Dialog(QWidget *parent = 0);
     virtual ~Dialog();
 
     void addDialogPage(DialogPage *page, bool addMinSize = true);

diff --git a/src/libkstapp/dialogpage.h b/src/libkstapp/dialogpage.h
@@ -27,7 +27,7 @@ class DialogPage : public QWidget
 {
   Q_OBJECT
   public:
-    DialogPage(Dialog *parent);
+    explicit DialogPage(Dialog *parent);
     virtual ~DialogPage();
 
     Dialog *dialog() const;
@@ -59,7 +59,7 @@ class DialogPageTab : public DialogPage
 {
   Q_OBJECT
   public:
-    DialogPageTab(Dialog *parent);
+    explicit DialogPageTab(Dialog *parent);
     virtual ~DialogPageTab();
 
     void addDialogTab(DialogTab *tab);

diff --git a/src/libkstapp/dialogscriptinterface.h b/src/libkstapp/dialogscriptinterface.h
@@ -133,7 +133,7 @@ class DialogSI : public ScriptInterface
 public slots:
     void invalidate();
 public:
-    DialogSI(QWidget* t,ViewItem* vi=0);
+    explicit DialogSI(QWidget* t,ViewItem* vi=0);
     ~DialogSI();
 
 protected:

diff --git a/src/libkstapp/dialogtab.h b/src/libkstapp/dialogtab.h
@@ -28,7 +28,7 @@ class DialogTab : public QWidget
 {
   Q_OBJECT
   public:
-    DialogTab(QWidget *parent);
+    explicit DialogTab(QWidget *parent);
     virtual ~DialogTab();
 
     Dialog *dialog() const;

diff --git a/src/libkstapp/differentiatecurvesdialog.h b/src/libkstapp/differentiatecurvesdialog.h
@@ -27,7 +27,7 @@ class DifferentiateCurvesDialog : public QDialog, Ui::DifferentiateCurvesDialog
 {
   Q_OBJECT
   public:
-    DifferentiateCurvesDialog(QWidget *parent);
+    explicit DifferentiateCurvesDialog(QWidget *parent);
     virtual ~DifferentiateCurvesDialog();
 
     void show();

diff --git a/src/libkstapp/document.h b/src/libkstapp/document.h
@@ -28,7 +28,7 @@ class CommandLineParser;
 
 class Document : public CoreDocument {
   public:
-    Document(MainWindow *win);
+    explicit Document(MainWindow *win);
     ~Document();
 
     SessionModel* session() const;

diff --git a/src/libkstapp/editmultiplewidget.h b/src/libkstapp/editmultiplewidget.h
@@ -23,7 +23,7 @@ namespace Kst {
 class EditMultipleWidget : public QWidget, public Ui::EditMultipleWidget {
   Q_OBJECT
   public:
-    EditMultipleWidget(QWidget *parent = 0);
+    explicit EditMultipleWidget(QWidget *parent = 0);
     virtual ~EditMultipleWidget();
 
 //     void addObjects(QStringList &objects);

diff --git a/src/libkstapp/ellipseitem.h b/src/libkstapp/ellipseitem.h
@@ -22,7 +22,7 @@ class EllipseItem : public ViewItem
 {
   Q_OBJECT
   public:
-    EllipseItem(View *parent);
+    explicit EllipseItem(View *parent);
     virtual ~EllipseItem();
 
     const QString defaultsGroupName() const {return EllipseItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/equationdialog.h b/src/libkstapp/equationdialog.h
@@ -25,7 +25,7 @@ namespace Kst {
 class EquationTab : public DataTab, Ui::EquationTab {
   Q_OBJECT
   public:
-    EquationTab(QWidget *parent = 0);
+    explicit EquationTab(QWidget *parent = 0);
     virtual ~EquationTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/eventmonitordialog.h b/src/libkstapp/eventmonitordialog.h
@@ -27,7 +27,7 @@ namespace Kst {
 class EventMonitorTab : public DataTab, Ui::EventMonitorTab {
   Q_OBJECT
   public:
-    EventMonitorTab(QWidget *parent = 0);
+    explicit EventMonitorTab(QWidget *parent = 0);
     virtual ~EventMonitorTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/exportgraphicsdialog.h b/src/libkstapp/exportgraphicsdialog.h
@@ -27,7 +27,7 @@ class ExportGraphicsDialog : public QDialog, Ui::ExportGraphicsDialog
 {
   Q_OBJECT
   public:
-    ExportGraphicsDialog(MainWindow *win);
+    explicit ExportGraphicsDialog(MainWindow *win);
     virtual ~ExportGraphicsDialog();
 
   public slots:

diff --git a/src/libkstapp/exportvectorsdialog.h b/src/libkstapp/exportvectorsdialog.h
@@ -27,7 +27,7 @@ class ExportVectorsDialog : public QDialog, Ui::ExportVectorsDialog
     Q_OBJECT
 
 public:
-    ExportVectorsDialog(QWidget *parent = 0);
+    explicit ExportVectorsDialog(QWidget *parent = 0);
     ~ExportVectorsDialog();
 
     void show();

diff --git a/src/libkstapp/filltab.h b/src/libkstapp/filltab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class FillTab : public DialogTab, Ui::FillTab {
   Q_OBJECT
   public:
-    FillTab(QWidget *parent = 0);
+    explicit FillTab(QWidget *parent = 0);
     virtual ~FillTab();
 
     void initialize(QBrush *b);

diff --git a/src/libkstapp/formatgridhelper.h b/src/libkstapp/formatgridhelper.h
@@ -39,7 +39,7 @@ struct AutoFormatRC {
 class FormatGridHelper
 {
 public:
-  FormatGridHelper(const QList<ViewItem*> &viewItems, bool protectLayout=true);
+  explicit FormatGridHelper(const QList<ViewItem*> &viewItems, bool protectLayout=true);
 
   QList<AutoFormatRC> rcList;
   QVector< QVector <int> > a;

diff --git a/src/libkstapp/generaltab.h b/src/libkstapp/generaltab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class GeneralTab : public DialogTab, Ui::GeneralTab {
   Q_OBJECT
   public:
-    GeneralTab(QWidget *parent = 0);
+    explicit GeneralTab(QWidget *parent = 0);
     virtual ~GeneralTab();
 
     bool useOpenGL() const;

diff --git a/src/libkstapp/gridtab.h b/src/libkstapp/gridtab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class GridTab : public DialogTab, Ui::GridTab {
   Q_OBJECT
   public:
-    GridTab(QWidget *parent = 0);
+    explicit GridTab(QWidget *parent = 0);
     virtual ~GridTab();
 
     bool showGrid() const;

diff --git a/src/libkstapp/histogramdialog.h b/src/libkstapp/histogramdialog.h
@@ -37,7 +37,7 @@ namespace Kst {
 class HistogramTab : public DataTab, Ui::HistogramTab {
   Q_OBJECT
   public:
-    HistogramTab(QWidget *parent = 0);
+    explicit HistogramTab(QWidget *parent = 0);
     virtual ~HistogramTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/imagedialog.h b/src/libkstapp/imagedialog.h
@@ -31,7 +31,7 @@ namespace Kst {
 class ImageTab : public DataTab, Ui::ImageTab {
   Q_OBJECT
   public:
-    ImageTab(QWidget *parent = 0);
+    explicit ImageTab(QWidget *parent = 0);
     virtual ~ImageTab();
 
     CurvePlacement* curvePlacement() const;

diff --git a/src/libkstapp/labelcreator.h b/src/libkstapp/labelcreator.h
@@ -27,7 +27,7 @@ class LabelCreator : public QDialog, Ui::LabelCreator
 {
   Q_OBJECT
   public:
-    LabelCreator(QWidget *parent = 0);
+    explicit LabelCreator(QWidget *parent = 0);
     virtual ~LabelCreator();
 
     QString labelText();

diff --git a/src/libkstapp/labelpropertiestab.h b/src/libkstapp/labelpropertiestab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class LabelPropertiesTab : public DialogTab, Ui::LabelPropertiesTab {
   Q_OBJECT
   public:
-    LabelPropertiesTab(QWidget *parent = 0);
+    explicit LabelPropertiesTab(QWidget *parent = 0);
     virtual ~LabelPropertiesTab();
 
     QString labelText() const;

diff --git a/src/libkstapp/labelscriptinterface.h b/src/libkstapp/labelscriptinterface.h
@@ -30,7 +30,7 @@ class LabelSI : public ScriptInterface
 {
     Q_OBJECT
 public:
-    LabelSI(LabelItem* it);
+    explicit LabelSI(LabelItem* it);
     QByteArrayList commands();
     QString doCommand(QString);
     bool isValid();

diff --git a/src/libkstapp/layoutboxitem.h b/src/libkstapp/layoutboxitem.h
@@ -22,7 +22,7 @@ class LayoutBoxItem : public ViewItem
 {
   Q_OBJECT
   public:
-    LayoutBoxItem(View *parent);
+    explicit LayoutBoxItem(View *parent);
     virtual ~LayoutBoxItem();
 
     const QString defaultsGroupName() const {return QString("layoutbox");}

diff --git a/src/libkstapp/layouttab.h b/src/libkstapp/layouttab.h
@@ -23,7 +23,7 @@ namespace Kst {
 class LayoutTab : public DialogTab, Ui::LayoutTab {
   Q_OBJECT
   public:
-    LayoutTab(QWidget *parent = 0);
+    explicit LayoutTab(QWidget *parent = 0);
     virtual ~LayoutTab();
 
     double horizontalMargin() const;

diff --git a/src/libkstapp/legenditem.h b/src/libkstapp/legenditem.h
@@ -29,7 +29,7 @@ class PlotRenderItem;
 class LegendItem : public ViewItem {
   Q_OBJECT
   public:
-    LegendItem(PlotItem *parent);
+    explicit LegendItem(PlotItem *parent);
     virtual ~LegendItem();
 
     const QString defaultsGroupName() const {return LegendItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/legendtab.h b/src/libkstapp/legendtab.h
@@ -25,7 +25,7 @@ class ObjectStore;
 class LegendTab : public DialogTab, Ui::LegendTab {
   Q_OBJECT
   public:
-    LegendTab(QWidget *parent = 0);
+    explicit LegendTab(QWidget *parent = 0);
     virtual ~LegendTab();
 
     void setDisplayedRelations(const QStringList& displayedRelations, const QStringList& displayedRelationTips);

diff --git a/src/libkstapp/lineedititem.h b/src/libkstapp/lineedititem.h
@@ -31,7 +31,7 @@ class LineEditItem : public ViewItem
     QLineEdit* _lineEdit;
     QGraphicsProxyWidget* _proxy;
   public:
-    LineEditItem(View *parent);
+    explicit LineEditItem(View *parent);
     virtual ~LineEditItem();
 
     const QString defaultsGroupName() const {return LineEditItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/lineitem.h b/src/libkstapp/lineitem.h
@@ -24,7 +24,7 @@ class LineItem : public ViewItem
 {
   Q_OBJECT
   public:
-    LineItem(View *parent);
+    explicit LineItem(View *parent);
     virtual ~LineItem();
 
     const QString defaultsGroupName() const {return LineItem::staticDefaultsGroupName();}

diff --git a/src/libkstapp/logdialog.h b/src/libkstapp/logdialog.h
@@ -31,7 +31,7 @@ class LogDialog : public QDialog, Ui::LogDialog
 {
   Q_OBJECT
   public:
-    LogDialog(MainWindow *parent);
+    explicit LogDialog(MainWindow *parent);
     virtual ~LogDialog();
 
   public slots:

diff --git a/src/libkstapp/logwidget.h b/src/libkstapp/logwidget.h
@@ -24,7 +24,7 @@ class LogWidget : public QTextBrowser
 {
   Q_OBJECT
   public:
-    LogWidget(QWidget *parent);
+    explicit LogWidget(QWidget *parent);
     virtual ~LogWidget();
 
   public Q_SLOTS:

diff --git a/src/libkstapp/markerstab.h b/src/libkstapp/markerstab.h
@@ -24,7 +24,7 @@ namespace Kst {
 class MarkersTab : public DialogTab, Ui::MarkersTab {
   Q_OBJECT
   public:
-    MarkersTab(QWidget *parent = 0);
+    explicit MarkersTab(QWidget *parent = 0);
     virtual ~MarkersTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/matrixmodel.h b/src/libkstapp/matrixmodel.h
@@ -21,7 +21,7 @@ namespace Kst {
 class MatrixModel : public QAbstractItemModel
 {
 public:
-  MatrixModel(MatrixPtr v);
+  explicit MatrixModel(MatrixPtr v);
   ~MatrixModel();
 
   int columnCount(const QModelIndex& parent = QModelIndex()) const;

diff --git a/src/libkstapp/plotitem.h b/src/libkstapp/plotitem.h
@@ -70,7 +70,7 @@ struct CachedPlotLabel {
 class PlotLabel : public QObject {
   Q_OBJECT
   public:
-    PlotLabel(PlotItem *plotItem);
+    explicit PlotLabel(PlotItem *plotItem);
 
     bool isVisible() const;
     void setVisible(bool visible);
@@ -121,7 +121,7 @@ class PlotItem : public ViewItem, public PlotItemInterface
   Q_OBJECT
   public:
 
-    PlotItem(View *parent);
+    explicit PlotItem(View *parent);
     virtual ~PlotItem();
 
     const QString defaultsGroupName() const {return PlotItem::staticDefaultsGroupName();}
@@ -610,7 +610,7 @@ class CreatePlotForCurve : public CreateCommand
   public:
     CreatePlotForCurve()
       : CreateCommand(QObject::tr("Create Plot For Curve")) {}
-    CreatePlotForCurve(View *view)
+    explicit CreatePlotForCurve(View *view)
       : CreateCommand(view, QObject::tr("Create Plot For Curve")) {}
     virtual ~CreatePlotForCurve() {}
     virtual void createItem();

diff --git a/src/libkstapp/plotmarkers.h b/src/libkstapp/plotmarkers.h
@@ -32,7 +32,7 @@ class PlotMarkers {
       BothEdges = 2
     };
 
-    PlotMarkers(bool xAxis = true);
+    explicit PlotMarkers(bool xAxis = true);
     virtual ~PlotMarkers();
 
     QList<double> markers();

diff --git a/src/libkstapp/plotrenderitem.h b/src/libkstapp/plotrenderitem.h
@@ -32,7 +32,7 @@ class PlotRenderItem : public ViewItem
   public:
     enum RenderType {First, Cartesian, Polar, Sinusoidal };
 
-    PlotRenderItem(PlotItem *parentItem);
+    explicit PlotRenderItem(PlotItem *parentItem);
     virtual ~PlotRenderItem();
 
     PlotItem *plotItem() const;

diff --git a/src/libkstapp/plotscriptinterface.h b/src/libkstapp/plotscriptinterface.h
@@ -22,7 +22,7 @@ class PlotSI : public ScriptInterface
 {
     Q_OBJECT
 public:
-    PlotSI(PlotItem* it);
+    explicit PlotSI(PlotItem* it);
     QByteArrayList commands();
     QString doCommand(QString);
     bool isValid();

diff --git a/src/libkstapp/powerspectrumdialog.h b/src/libkstapp/powerspectrumdialog.h
@@ -29,7 +29,7 @@ namespace Kst {
 class PowerSpectrumTab : public DataTab, Ui::PowerSpectrumTab {
   Q_OBJECT
   public:
-    PowerSpectrumTab(QWidget *parent = 0);
+    explicit PowerSpectrumTab(QWidget *parent = 0);
     virtual ~PowerSpectrumTab();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/libkstapp/primitivemodel.h b/src/libkstapp/primitivemodel.h
@@ -60,7 +60,7 @@ class PrimitiveModel : public QAbstractItemModel
   enum ColumnID { Name, Value };
 
 public:
-  PrimitiveModel(ObjectStore *store);
+  explicit PrimitiveModel(ObjectStore *store);
   ~PrimitiveModel();
 
   int columnCount(const QModelIndex& parent = QModelIndex()) const;

diff --git a/src/libkstapp/scalarmodel.h b/src/libkstapp/scalarmodel.h
@@ -25,7 +25,7 @@ class ScalarModel : public PrimitiveModel
   enum ColumnID { Name, Value };
 
 public:
-  ScalarModel(ObjectStore *store) : PrimitiveModel(store) {
+  explicit ScalarModel(ObjectStore *store) : PrimitiveModel(store) {
     createTree<Scalar>();
   }
 

diff --git a/src/libkstapp/scene.h b/src/libkstapp/scene.h
@@ -25,7 +25,7 @@ class Scene : public QGraphicsScene
 {
   Q_OBJECT
   public:
-    Scene(View *view);
+    explicit Scene(View *view);
     virtual ~Scene();
 
   protected:

diff --git a/src/libkstapp/scriptserver.h b/src/libkstapp/scriptserver.h
@@ -45,7 +45,7 @@ class ScriptServer : public QObject
     QMap<QByteArray,MacroSI*> _macroMap;
     QMap<QByteArray,VarSI*> _varMap;
 public:
-    ScriptServer(ObjectStore*obj);
+    explicit ScriptServer(ObjectStore*obj);
     ~ScriptServer();
     QByteArray checkPrimatives(QByteArray&command,QLocalSocket* s);
     void setStore(ObjectStore *obj) { _store = obj; vi.clear();}

diff --git a/src/libkstapp/sessionmodel.h b/src/libkstapp/sessionmodel.h
@@ -28,7 +28,7 @@ class SessionModel : public QAbstractItemModel
     Q_OBJECT
 
 public:
-  SessionModel(ObjectStore *store);
+  explicit SessionModel(ObjectStore *store);
   ~SessionModel();
 
   int columnCount(const QModelIndex& parent = QModelIndex()) const;

diff --git a/src/libkstapp/sharedaxisboxitem.h b/src/libkstapp/sharedaxisboxitem.h
@@ -25,7 +25,7 @@ class SharedAxisBoxItem : public ViewItem
   public:
     friend class SharedAxisBoxItemFactory;
 
-    SharedAxisBoxItem(View *parent);
+    explicit SharedAxisBoxItem(View *parent);
     virtual ~SharedAxisBoxItem();
 
     virtual void save(QXmlStreamWriter &xml);

diff --git a/src/libkstapp/stringmodel.h b/src/libkstapp/stringmodel.h
@@ -25,7 +25,7 @@ class StringModel : public PrimitiveModel
   enum ColumnID { Name, Value };
 
 public:
-  StringModel(ObjectStore *store) : PrimitiveModel(store) {
+  explicit StringModel(ObjectStore *store) : PrimitiveModel(store) {
     createTree<String>();
   }
 

diff --git a/src/libkstapp/stringscriptinterface.h b/src/libkstapp/stringscriptinterface.h
@@ -31,7 +31,7 @@ class StringGenSI : public ScriptInterface
     Q_OBJECT
     StringPtr str;
 public:
-    StringGenSI(StringPtr it);
+    explicit StringGenSI(StringPtr it);
     QByteArrayList commands();
     QString doCommand(QString);
     bool isValid();

diff --git a/src/libkstapp/stroketab.h b/src/libkstapp/stroketab.h
@@ -25,7 +25,7 @@ namespace Kst {
 class StrokeTab : public DialogTab, Ui::StrokeTab {
   Q_OBJECT
   public:
-    StrokeTab(QWidget *parent = 0);
+    explicit StrokeTab(QWidget *parent = 0);
     virtual ~StrokeTab();
 
     void initialize(QPen *p);

diff --git a/src/libkstapp/tabwidget.h b/src/libkstapp/tabwidget.h
@@ -24,7 +24,7 @@ class TabWidget : public QTabWidget
     Q_OBJECT
 
   public:
-    TabWidget(QWidget *parent);
+    explicit TabWidget(QWidget *parent);
     ~TabWidget();
 
     View *currentView() const;

diff --git a/src/libkstapp/view.h b/src/libkstapp/view.h
@@ -45,7 +45,7 @@ class View : public QGraphicsView
     Q_DECLARE_FLAGS(CreationEvents, CreationEvent)
 
     View();
-    View(QWidget* parent);
+    explicit View(QWidget* parent);
     virtual ~View();
 
     static QString staticDefaultsGroupName() { return QString("view");}

diff --git a/src/libkstapp/viewgridlayout.h b/src/libkstapp/viewgridlayout.h
@@ -30,7 +30,7 @@ class ViewGridLayout : public QObject
 {
   Q_OBJECT
   public:
-    ViewGridLayout(ViewItem *parent);
+    explicit ViewGridLayout(ViewItem *parent);
     virtual ~ViewGridLayout();
 
     ViewItem *parentItem() const;

diff --git a/src/libkstapp/viewitem.h b/src/libkstapp/viewitem.h
@@ -71,7 +71,7 @@ class ViewItem : public QObject, public NamedObject, public QGraphicsRectItem
       Completed
     };
 
-    ViewItem(View *parent);
+    explicit ViewItem(View *parent);
     virtual ~ViewItem();
 
     virtual void save(QXmlStreamWriter &xml);
@@ -445,7 +445,7 @@ class CreateCommand : public QObject, public ViewCommand
 class LayoutCommand : public ViewItemCommand
 {
   public:
-    LayoutCommand(ViewItem *item)
+    explicit LayoutCommand(ViewItem *item)
         : ViewItemCommand(item, QObject::tr("Create layout"), false) {}
 
     virtual ~LayoutCommand() {}
@@ -460,7 +460,7 @@ class LayoutCommand : public ViewItemCommand
 class AppendLayoutCommand : public ViewItemCommand
 {
   public:
-    AppendLayoutCommand(ViewItem *item)
+    explicit AppendLayoutCommand(ViewItem *item)
         : ViewItemCommand(item, QObject::tr("Append Item to Layout"), false) {}
 
     virtual ~AppendLayoutCommand() {}
@@ -512,7 +512,7 @@ class ResizeCommand : public ViewItemCommand
 class RemoveCommand : public ViewItemCommand
 {
   public:
-    RemoveCommand(ViewItem *item)
+    explicit RemoveCommand(ViewItem *item)
         : ViewItemCommand(item, QObject::tr("Remove")) {}
 
     virtual ~RemoveCommand() {}
@@ -524,7 +524,7 @@ class RemoveCommand : public ViewItemCommand
 class RaiseCommand : public ViewItemCommand
 {
   public:
-    RaiseCommand(ViewItem *item)
+    explicit RaiseCommand(ViewItem *item)
         : ViewItemCommand(item, QObject::tr("Raise")) {}
 
     virtual ~RaiseCommand() {}
@@ -536,7 +536,7 @@ class RaiseCommand : public ViewItemCommand
 class LowerCommand : public ViewItemCommand
 {
   public:
-    LowerCommand(ViewItem *item)
+    explicit LowerCommand(ViewItem *item)
         : ViewItemCommand(item, QObject::tr("Lower")) {}
 
     virtual ~LowerCommand() {}

diff --git a/src/libkstapp/viewitemscriptinterface.h b/src/libkstapp/viewitemscriptinterface.h
@@ -54,7 +54,7 @@ class ViewItemSI : public ScriptInterface
 {
     Q_OBJECT
 public:
-    ViewItemSI(ViewItem* it);
+    explicit ViewItemSI(ViewItem* it);
     QByteArrayList commands();
     QString doCommand(QString);
     bool isValid();

diff --git a/src/libkstmath/dataobject.h b/src/libkstmath/dataobject.h
@@ -192,7 +192,7 @@ class KSTMATH_EXPORT DataObjectConfigWidget : public QWidget
     Q_OBJECT
 
   public:
-    DataObjectConfigWidget(QSettings*); // will be reparented later
+    explicit DataObjectConfigWidget(QSettings*); // will be reparented later
     virtual ~DataObjectConfigWidget();
 
     virtual void setupFromObject(Object* dataObject);

diff --git a/src/libkstmath/enodes.h b/src/libkstmath/enodes.h
@@ -146,7 +146,7 @@ namespace Equations {
   class KSTMATH_EXPORT Number : public Node 
   {
     public:
-      Number(double n);
+      explicit Number(double n);
       ~Number();
 
       bool isConst();
@@ -161,7 +161,7 @@ namespace Equations {
   class KSTMATH_EXPORT Identifier : public Node 
   {
     public:
-      Identifier(char *name);
+      explicit Identifier(char *name);
       ~Identifier();
 
       bool isConst();
@@ -223,7 +223,7 @@ namespace Equations {
 
   class KSTMATH_EXPORT Negation : public Node {
     public:
-      Negation(Node *node);
+      explicit Negation(Node *node);
       ~Negation();
       bool isConst();
       double value(Context*);
@@ -236,7 +236,7 @@ namespace Equations {
 
   class KSTMATH_EXPORT LogicalNot : public Node {
     public:
-      LogicalNot(Node *node);
+      explicit LogicalNot(Node *node);
       ~LogicalNot();
       bool isConst();
       double value(Context*);

diff --git a/src/libkstmath/painter.h b/src/libkstmath/painter.h
@@ -32,7 +32,7 @@ class KSTMATH_EXPORT Painter : public QPainter
      */
     enum PaintType { P_PAINT = 0, P_PLOT, P_ZOOM, P_UPDATE, P_PRINT, P_EXPORT };
 
-    Painter(PaintType t = P_PAINT);
+    explicit Painter(PaintType t = P_PAINT);
     virtual ~Painter();
 
     // Defalut: P_PAINT

diff --git a/src/libkstmath/palette.h b/src/libkstmath/palette.h
@@ -32,7 +32,7 @@ class KSTMATH_EXPORT Palette
     static QStringList getPaletteList();
 
     Palette();
-    Palette(const QString &paletteName);
+    explicit Palette(const QString &paletteName);
 
     virtual ~Palette();
 

diff --git a/src/libkstmath/relation.h b/src/libkstmath/relation.h
@@ -80,7 +80,7 @@ class KSTMATH_EXPORT Relation : public Object {
     static const QString staticTypeString;
     const QString& typeString() const { return staticTypeString; }
 
-    Relation(ObjectStore *store);
+    explicit Relation(ObjectStore *store);
     virtual ~Relation();
 
     virtual void showNewDialog() { }

diff --git a/src/widgets/cclineedit.h b/src/widgets/cclineedit.h
@@ -89,8 +89,8 @@ class KSTWIDGETS_EXPORT CCLineEdit : public QLineEdit, public CCCommonEdit {
 
 public:
     friend class CCTableView;
-    CCLineEdit(QWidget*p=0);
-    CCLineEdit(const QString&s,QWidget*p=0);
+    explicit CCLineEdit(QWidget*p=0);
+    explicit CCLineEdit(const QString&s,QWidget*p=0);
     ~CCLineEdit();
     virtual void init(QList<CompletionCase> data);
 
@@ -117,8 +117,8 @@ class KSTWIDGETS_EXPORT SVCCLineEdit : public CCLineEdit
     Q_OBJECT
     QList<CompletionCase> *_extraData, *_svData, *_allData;
 public:
-    SVCCLineEdit(QWidget*p=0);
-    SVCCLineEdit(const QString&s,QWidget*p=0);
+    explicit SVCCLineEdit(QWidget*p=0);
+    explicit SVCCLineEdit(const QString&s,QWidget*p=0);
     ~SVCCLineEdit();
 
     void setObjectStore(ObjectStore *store);
@@ -150,8 +150,8 @@ class KSTWIDGETS_EXPORT CCTextEdit : public QTextEdit, public CCCommonEdit {
     virtual void ChangeCurrentPrefix(QString x);
 public:
     friend class CCTableView;
-    CCTextEdit(QWidget*p=0);
-    CCTextEdit(const QString&s,QWidget*p=0);
+    explicit CCTextEdit(QWidget*p=0);
+    explicit CCTextEdit(const QString&s,QWidget*p=0);
     ~CCTextEdit();
     virtual void init(QList<CompletionCase> data);
 
@@ -176,8 +176,8 @@ class KSTWIDGETS_EXPORT SVCCTextEdit : public CCTextEdit
     Q_OBJECT
     QList<CompletionCase> *_extraData, *_svData, *_allData;
 public:
-    SVCCTextEdit(QWidget*p=0);
-    SVCCTextEdit(const QString&s,QWidget*p=0);
+    explicit SVCCTextEdit(QWidget*p=0);
+    explicit SVCCTextEdit(const QString&s,QWidget*p=0);
     ~SVCCTextEdit();
 
     void setObjectStore(ObjectStore *store);

diff --git a/src/widgets/cclineedit_p.h b/src/widgets/cclineedit_p.h
@@ -100,7 +100,7 @@ class CCTableView : public QTableView {
     friend class CCTextEdit;
     friend class CategoricalCompleter;
 
-    CCTableView(CompletionCase* _data);
+    explicit CCTableView(CompletionCase* _data);
     const QString& prefix() { return _prefix; }
 
 protected:

diff --git a/src/widgets/colorpalette.h b/src/widgets/colorpalette.h
@@ -25,7 +25,7 @@ class KSTWIDGETS_EXPORT ColorPalette : public QWidget, public Ui::ColorPalette
     Q_OBJECT
 
   public:
-    ColorPalette(QWidget *parent = 0);
+    explicit ColorPalette(QWidget *parent = 0);
     ~ColorPalette();
 
     QString selectedPalette();

diff --git a/src/widgets/curveappearance.h b/src/widgets/curveappearance.h
@@ -23,7 +23,7 @@ namespace Kst {
 class KSTWIDGETS_EXPORT CurveAppearance : public QWidget, public Ui::CurveAppearance {
   Q_OBJECT
   public:
-    CurveAppearance(QWidget *parent = 0);
+    explicit CurveAppearance(QWidget *parent = 0);
     virtual ~CurveAppearance();
 
     bool showLines() const;

diff --git a/src/widgets/curveplacement.h b/src/widgets/curveplacement.h
@@ -27,7 +27,7 @@ class KSTWIDGETS_EXPORT CurvePlacement : public QWidget, public Ui::CurvePlaceme
   public:
     enum Place { NewPlot, ExistingPlot, NoPlot, NewPlotNewTab };
     enum Layout { Auto, Custom, Protect };
-    CurvePlacement(QWidget *parent = 0);
+    explicit CurvePlacement(QWidget *parent = 0);
     virtual ~CurvePlacement();
 
     Place place() const;

diff --git a/src/widgets/datarange.h b/src/widgets/datarange.h
@@ -25,7 +25,7 @@ namespace Kst {
 class  KSTWIDGETS_EXPORT DataRange : public QWidget, public Ui::DataRange {
   Q_OBJECT
   public:
-    DataRange(QWidget *parent = 0);
+    explicit DataRange(QWidget *parent = 0);
     virtual ~DataRange();
 
     qreal start() const;

diff --git a/src/widgets/datasourceselector.h b/src/widgets/datasourceselector.h
@@ -27,7 +27,7 @@ class KSTWIDGETS_EXPORT DataSourceSelector : public QWidget {
   Q_OBJECT
   Q_PROPERTY(QString file READ file WRITE setFile USER true)
   public:
-    DataSourceSelector(QWidget *parent = 0);
+    explicit DataSourceSelector(QWidget *parent = 0);
     virtual ~DataSourceSelector();
 
     QString file() const;

diff --git a/src/widgets/fftoptions.h b/src/widgets/fftoptions.h
@@ -27,7 +27,7 @@ class KSTWIDGETS_EXPORT FFTOptions : public QWidget, public Ui::FFTOptions
     Q_OBJECT
 
   public:
-    FFTOptions(QWidget *parent = 0);
+    explicit FFTOptions(QWidget *parent = 0);
     ~FFTOptions();
 
     double sampleRate() const;

diff --git a/src/widgets/filerequester.h b/src/widgets/filerequester.h
@@ -27,7 +27,7 @@ class KSTWIDGETS_EXPORT FileRequester : public QWidget {
   Q_OBJECT
   Q_PROPERTY(QString file READ file WRITE setFile USER true)
   public:
-    FileRequester(QWidget *parent = 0);
+    explicit FileRequester(QWidget *parent = 0);
     virtual ~FileRequester();
 
     QString file() const;

diff --git a/src/widgets/gradienteditor.h b/src/widgets/gradienteditor.h
@@ -24,7 +24,7 @@ namespace Kst {
 class KSTWIDGETS_EXPORT GradientEditor : public QWidget {
   Q_OBJECT
 public:
-  GradientEditor(QWidget *parent = 0);
+  explicit GradientEditor(QWidget *parent = 0);
   virtual ~GradientEditor();
 
   virtual QSize sizeHint() const;

diff --git a/src/widgets/labellineedit.h b/src/widgets/labellineedit.h
@@ -23,7 +23,7 @@ namespace Kst {
 class KSTWIDGETS_EXPORT LabelLineEdit : public QLineEdit {
   Q_OBJECT
   public:
-    LabelLineEdit(QWidget *parent = 0);
+    explicit LabelLineEdit(QWidget *parent = 0);
     virtual ~LabelLineEdit();
 
     virtual void focusInEvent ( QFocusEvent * event );

diff --git a/src/widgets/scalarlistselector.h b/src/widgets/scalarlistselector.h
@@ -23,7 +23,7 @@ namespace Kst {
 class KSTWIDGETS_EXPORT ScalarListSelector : public QDialog, public Ui::ScalarListSelector {
   Q_OBJECT
   public:
-    ScalarListSelector(QWidget *parent = 0);
+    explicit ScalarListSelector(QWidget *parent = 0);
     virtual ~ScalarListSelector();
 
     QString selectedScalar() const;

diff --git a/src/widgets/widgets.h b/src/widgets/widgets.h
@@ -43,7 +43,7 @@ class Widgets : public QObject, public QDesignerCustomWidgetCollectionInterface
   Q_INTERFACES(QDesignerCustomWidgetCollectionInterface)
   Q_OBJECT
   public:
-    Widgets(QObject *parent = 0);
+    explicit Widgets(QObject *parent = 0);
     virtual ~Widgets();
     QList<QDesignerCustomWidgetInterface*> customWidgets() const {
       return _plugins;
@@ -57,7 +57,7 @@ class WidgetPlugin : public QObject, public QDesignerCustomWidgetInterface {
   Q_OBJECT
 
   public:
-    WidgetPlugin(QObject *parent = 0);
+    explicit WidgetPlugin(QObject *parent = 0);
     virtual ~WidgetPlugin();
 
     QString group() const;
@@ -79,7 +79,7 @@ class ColorButtonPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    ColorButtonPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit ColorButtonPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("ColorButton");
     } //do not translate
@@ -92,7 +92,7 @@ class DataSourceSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    DataSourceSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit DataSourceSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("DataSourceSelector");
     } //do not translate
@@ -105,7 +105,7 @@ class GradientEditorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    GradientEditorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit GradientEditorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("GradientEditor");
     } //do not translate
@@ -118,7 +118,7 @@ class FileRequesterPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    FileRequesterPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit FileRequesterPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("FileRequester");
     } //do not translate
@@ -131,7 +131,7 @@ class ComboBoxPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    ComboBoxPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit ComboBoxPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("ComboBox");
     } //do not translate
@@ -144,7 +144,7 @@ class DataRangePlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    DataRangePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit DataRangePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("DataRange");
     } //do not translate
@@ -157,7 +157,7 @@ class CurveSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    CurveSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit CurveSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("CurveSelector");
     } //do not translate
@@ -170,7 +170,7 @@ class VectorSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    VectorSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit VectorSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("VectorSelector");
     } //do not translate
@@ -183,7 +183,7 @@ class MatrixSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    MatrixSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit MatrixSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("MatrixSelector");
     } //do not translate
@@ -196,7 +196,7 @@ class ScalarSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    ScalarSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit ScalarSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("ScalarSelector");
     } //do not translate
@@ -209,7 +209,7 @@ class StringSelectorPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    StringSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit StringSelectorPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("StringSelector");
     } //do not translate
@@ -222,7 +222,7 @@ class CurveAppearancePlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    CurveAppearancePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit CurveAppearancePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("CurveAppearance");
     } //do not translate
@@ -235,7 +235,7 @@ class CurvePlacementPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    CurvePlacementPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit CurvePlacementPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("CurvePlacement");
     } //do not translate
@@ -248,7 +248,7 @@ class FFTOptionsPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    FFTOptionsPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit FFTOptionsPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("FFTOptions");
     } //do not translate
@@ -262,7 +262,7 @@ class ColorPalettePlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    ColorPalettePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit ColorPalettePlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("ColorPalette");
     } //do not translate
@@ -275,7 +275,7 @@ class LabelBuilderPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    LabelBuilderPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit LabelBuilderPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("LabelBuilder");
     } //do not translate
@@ -288,7 +288,7 @@ class LabelLineEditPlugin : public WidgetPlugin {
   Q_OBJECT
   Q_INTERFACES(QDesignerCustomWidgetInterface)
   public:
-    LabelLineEditPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
+    explicit LabelLineEditPlugin(QObject *parent = 0) : WidgetPlugin(parent) {}
     QString name() const {
       return QLatin1String("LabelLineEdit");
     } //do not translate