diff --git a/src/widgets/widgets/qabstractspinbox.cpp b/src/widgets/widgets/qabstractspinbox.cpp
index f988bc7a19..27bc9e9099 100644
--- a/src/widgets/widgets/qabstractspinbox.cpp
+++ b/src/widgets/widgets/qabstractspinbox.cpp
@@ -692,14 +692,14 @@ void QAbstractSpinBox::setLineEdit(QLineEdit *lineEdit)
     d->edit->setAcceptDrops(false);
 
     if (d->type != QMetaType::UnknownType) {
-        connect(d->edit, SIGNAL(textChanged(QString)),
-                this, SLOT(_q_editorTextChanged(QString)));
-        connect(d->edit, SIGNAL(cursorPositionChanged(int,int)),
-                this, SLOT(_q_editorCursorPositionChanged(int,int)));
-        connect(d->edit, SIGNAL(cursorPositionChanged(int,int)),
-                this, SLOT(updateMicroFocus()));
-        connect(d->edit->d_func()->control, SIGNAL(updateMicroFocus()),
-                this, SLOT(updateMicroFocus()));
+        QObjectPrivate::connect(d->edit, &QLineEdit::textChanged,
+                                d, &QAbstractSpinBoxPrivate::editorTextChanged);
+        QObjectPrivate::connect(d->edit, &QLineEdit::cursorPositionChanged,
+                                d, &QAbstractSpinBoxPrivate::editorCursorPositionChanged);
+        connect(d->edit, &QLineEdit::cursorPositionChanged,
+                this, [this]() { updateMicroFocus(); });
+        connect(d->edit->d_func()->control, &QWidgetLineControl::updateMicroFocus,
+                this, [this]() { updateMicroFocus(); });
     }
     d->updateEditFieldGeometry();
     d->edit->setContextMenuPolicy(Qt::NoContextMenu);
@@ -1511,7 +1511,7 @@ void QAbstractSpinBoxPrivate::emitSignals(EmitPolicy, const QVariant &)
     signal.
 */
 
-void QAbstractSpinBoxPrivate::_q_editorTextChanged(const QString &t)
+void QAbstractSpinBoxPrivate::editorTextChanged(const QString &t)
 {
     Q_Q(QAbstractSpinBox);
 
@@ -1541,7 +1541,7 @@ void QAbstractSpinBoxPrivate::_q_editorTextChanged(const QString &t)
     the different sections etc.
 */
 
-void QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(int oldpos, int newpos)
+void QAbstractSpinBoxPrivate::editorCursorPositionChanged(int oldpos, int newpos)
 {
     if (!edit->hasSelectedText() && !ignoreCursorPositionChanged && !specialValue()) {
         ignoreCursorPositionChanged = true;
diff --git a/src/widgets/widgets/qabstractspinbox.h b/src/widgets/widgets/qabstractspinbox.h
index 6707db45c8..91d3dcb8fc 100644
--- a/src/widgets/widgets/qabstractspinbox.h
+++ b/src/widgets/widgets/qabstractspinbox.h
@@ -136,9 +136,6 @@ protected:
     QAbstractSpinBox(QAbstractSpinBoxPrivate &dd, QWidget *parent = nullptr);
 
 private:
-    Q_PRIVATE_SLOT(d_func(), void _q_editorTextChanged(const QString &))
-    Q_PRIVATE_SLOT(d_func(), void _q_editorCursorPositionChanged(int, int))
-
     Q_DECLARE_PRIVATE(QAbstractSpinBox)
     Q_DISABLE_COPY(QAbstractSpinBox)
     friend class QAccessibleAbstractSpinBox;
diff --git a/src/widgets/widgets/qabstractspinbox_p.h b/src/widgets/widgets/qabstractspinbox_p.h
index efc23586cf..4252a01423 100644
--- a/src/widgets/widgets/qabstractspinbox_p.h
+++ b/src/widgets/widgets/qabstractspinbox_p.h
@@ -74,8 +74,8 @@ public:
     virtual QString textFromValue(const QVariant &n) const;
     virtual QVariant valueFromText(const QString &input) const;
 
-    void _q_editorTextChanged(const QString &);
-    virtual void _q_editorCursorPositionChanged(int oldpos, int newpos);
+    void editorTextChanged(const QString &);
+    virtual void editorCursorPositionChanged(int oldpos, int newpos);
 
     virtual QStyle::SubControl newHoverControl(const QPoint &pos);
     bool updateHoverControl(const QPoint &pos);
diff --git a/src/widgets/widgets/qdatetimeedit.cpp b/src/widgets/widgets/qdatetimeedit.cpp
index ffcaf0c226..dfeee394f1 100644
--- a/src/widgets/widgets/qdatetimeedit.cpp
+++ b/src/widgets/widgets/qdatetimeedit.cpp
@@ -948,7 +948,7 @@ void QDateTimeEdit::setDisplayFormat(const QString &format)
             d->value = d->value.toDate().startOfDay(d->timeZone);
         }
         d->updateEdit();
-        d->_q_editorCursorPositionChanged(-1, 0);
+        d->editorCursorPositionChanged(-1, 0);
     }
 }
 
@@ -2296,7 +2296,7 @@ void QDateTimeEditPrivate::emitSignals(EmitPolicy ep, const QVariant &old)
   \internal
 */
 
-void QDateTimeEditPrivate::_q_editorCursorPositionChanged(int oldpos, int newpos)
+void QDateTimeEditPrivate::editorCursorPositionChanged(int oldpos, int newpos)
 {
     if (ignoreCursorPositionChanged || specialValue())
         return;
@@ -2354,7 +2354,7 @@ void QDateTimeEditPrivate::_q_editorCursorPositionChanged(int oldpos, int newpos
 
     currentSectionIndex = s;
     Q_ASSERT_X(currentSectionIndex < sectionNodes.size(),
-               "QDateTimeEditPrivate::_q_editorCursorPositionChanged()",
+               "QDateTimeEditPrivate::editorCursorPositionChanged()",
                qPrintable(QString::fromLatin1("Internal error (%1 %2)").
                           arg(currentSectionIndex).
                           arg(sectionNodes.size())));
diff --git a/src/widgets/widgets/qdatetimeedit_p.h b/src/widgets/widgets/qdatetimeedit_p.h
index 21be760fd0..215ee75bfe 100644
--- a/src/widgets/widgets/qdatetimeedit_p.h
+++ b/src/widgets/widgets/qdatetimeedit_p.h
@@ -50,7 +50,7 @@ public:
     void emitSignals(EmitPolicy ep, const QVariant &old) override;
     QString textFromValue(const QVariant &f) const override;
     QVariant valueFromText(const QString &f) const override;
-    void _q_editorCursorPositionChanged(int oldpos, int newpos) override;
+    void editorCursorPositionChanged(int oldpos, int newpos) override;
     void interpret(EmitPolicy ep) override;
     void clearCache() const override;
     QStyle::SubControl newHoverControl(const QPoint &pos) override;