Examples: Add some missing slot decorators

As unearthed by the warnings added by the logging category.
As a drive-by, fix some imports.

Pick-to: 6.3 6.2
Task-number: PYSIDE-2033
Change-Id: I3812c705b60eb7be744c3532fcfb0e4024763885
Reviewed-by: Christian Tismer <tismer@stackless.com>

42 files changed, 236 insertions, 42 deletions

diff --git a/examples/bluetooth/btscanner/device.py b/examples/bluetooth/btscanner/device.py
index daf0ab456..02fc53f0b 100644
--- a/examples/bluetooth/btscanner/device.py
+++ b/examples/bluetooth/btscanner/device.py
@@ -88,7 +88,7 @@ class DeviceDiscoveryDialog(QDialog):
         else:
             self._local_device.setHostMode(QBluetoothLocalDevice.HostPoweredOff)
 
-    @Slot(QBluetoothLocalDevice.HostMode)
+    @Slot("QBluetoothLocalDevice::HostMode")
     def host_mode_state_changed(self, mode):
         self._ui.power.setChecked(mode != QBluetoothLocalDevice.HostPoweredOff)
         self._ui.discoverable.setChecked(mode == QBluetoothLocalDevice.HostDiscoverable)
@@ -118,7 +118,7 @@ class DeviceDiscoveryDialog(QDialog):
         elif chosen_action == remove_pair_action:
             self._local_device.requestPairing(address, QBluetoothLocalDevice.Unpaired)
 
-    @Slot(QBluetoothAddress, QBluetoothLocalDevice.Pairing)
+    @Slot(QBluetoothAddress, "QBluetoothLocalDevice::Pairing")
     def pairing_done(self, address, pairing):
         items = self._ui.list.findItems(address.toString(), Qt.MatchContains)
 
diff --git a/examples/charts/donutbreakdown/donutbreakdown.py b/examples/charts/donutbreakdown/donutbreakdown.py
index bd9c6240f..7cf6a36a1 100644
--- a/examples/charts/donutbreakdown/donutbreakdown.py
+++ b/examples/charts/donutbreakdown/donutbreakdown.py
@@ -5,7 +5,7 @@
 
 
 import sys
-from PySide6.QtCore import Qt
+from PySide6.QtCore import Qt, Slot
 from PySide6.QtGui import QColor, QFont, QPainter, QScreen
 from PySide6.QtWidgets import QApplication, QMainWindow
 from PySide6.QtCharts import QChart, QChartView, QPieSeries, QPieSlice
@@ -29,6 +29,7 @@ class MainSlice(QPieSlice):
     def name(self):
         return self.name
 
+    @Slot()
     def update_label(self):
         p = self.percentage() * 100
         self.setLabel(f"{self.name} {p:.2f}%")
diff --git a/examples/charts/legend/legend.py b/examples/charts/legend/legend.py
index 4b46cc58b..f1929547d 100644
--- a/examples/charts/legend/legend.py
+++ b/examples/charts/legend/legend.py
@@ -4,7 +4,7 @@
 """PySide6 port of the Legend example from Qt v5.x"""
 
 import sys
-from PySide6.QtCore import Qt, QRectF
+from PySide6.QtCore import Qt, QRectF, Slot
 from PySide6.QtGui import QBrush, QColor, QPainter, QPen
 from PySide6.QtWidgets import (QApplication, QDoubleSpinBox,
     QFormLayout, QGridLayout, QGroupBox, QPushButton, QWidget)
@@ -123,6 +123,7 @@ class MainWidget(QWidget):
     def hide_legend_spinbox(self):
         self.legend_settings.setVisible(False)
 
+    @Slot()
     def toggle_attached(self):
         legend = self.chart.legend()
         if legend.isAttachedToChart():
@@ -139,6 +140,7 @@ class MainWidget(QWidget):
             self.hide_legend_spinbox()
         self.update()
 
+    @Slot()
     def add_barset(self):
         series_count = self.series.count()
         bar_set = QBarSet(f"set {series_count}")
@@ -146,12 +148,14 @@ class MainWidget(QWidget):
         bar_set.append([1 + delta, 2 + delta, 3 + delta, 4 + delta])
         self.series.append(bar_set)
 
+    @Slot()
     def remove_barset(self):
         sets = self.series.barSets()
         len_sets = len(sets)
         if len_sets > 0:
             self.series.remove(sets[len_sets - 1])
 
+    @Slot()
     def set_legend_alignment(self):
         button = self.sender()
         legend = self.chart.legend()
@@ -174,18 +178,21 @@ class MainWidget(QWidget):
                 button.setText("Align (Top)")
             legend.setAlignment(Qt.AlignTop)
 
+    @Slot()
     def toggle_bold(self):
         legend = self.chart.legend()
         font = legend.font()
         font.setBold(not font.bold())
         legend.setFont(font)
 
+    @Slot()
     def toggle_italic(self):
         legend = self.chart.legend()
         font = legend.font()
         font.setItalic(not font.italic())
         legend.setFont(font)
 
+    @Slot()
     def font_size_changed(self):
         legend = self.chart.legend()
         font = legend.font()
@@ -195,6 +202,7 @@ class MainWidget(QWidget):
         font.setPointSizeF(font_size)
         legend.setFont(font)
 
+    @Slot()
     def update_legend_layout(self):
         legend = self.chart.legend()
 
diff --git a/examples/charts/nesteddonuts/nesteddonuts.py b/examples/charts/nesteddonuts/nesteddonuts.py
index 2ce068bcf..49173c33a 100644
--- a/examples/charts/nesteddonuts/nesteddonuts.py
+++ b/examples/charts/nesteddonuts/nesteddonuts.py
@@ -5,7 +5,7 @@
 
 import sys
 
-from PySide6.QtCore import Qt, QTimer
+from PySide6.QtCore import Qt, QTimer, Slot
 from PySide6.QtGui import QPainter
 from PySide6.QtWidgets import QApplication, QGridLayout, QWidget
 from PySide6.QtCharts import QChart, QChartView, QPieSeries, QPieSlice
@@ -65,6 +65,7 @@ class Widget(QWidget):
             self.donuts.append(donut)
             self.chart_view.chart().addSeries(donut)
 
+    @Slot()
     def update_rotation(self):
         for donut in self.donuts:
             phase_shift = randrange(-50, 100)
diff --git a/examples/corelib/settingseditor/settingseditor.py b/examples/corelib/settingseditor/settingseditor.py
index 266ddda4e..b1b4dbe0e 100644
--- a/examples/corelib/settingseditor/settingseditor.py
+++ b/examples/corelib/settingseditor/settingseditor.py
@@ -7,7 +7,7 @@
 import sys
 
 from PySide6.QtCore import (QByteArray, QDate, QDateTime, QDir, QEvent, QPoint,
-    QRect, QRegularExpression, QSettings, QSize, QTime, QTimer, Qt)
+    QRect, QRegularExpression, QSettings, QSize, QTime, QTimer, Qt, Slot)
 from PySide6.QtGui import (QAction, QColor, QIcon, QIntValidator,
     QDoubleValidator, QRegularExpressionValidator, QValidator)
 from PySide6.QtWidgets import (QAbstractItemView, QApplication,
@@ -144,6 +144,7 @@ class MainWindow(QMainWindow):
         self.setWindowTitle("Settings Editor")
         self.resize(500, 600)
 
+    @Slot()
     def open_settings(self):
         if self.location_dialog is None:
             self.location_dialog = LocationDialog(self)
@@ -156,6 +157,7 @@ class MainWindow(QMainWindow):
             self.set_settings_object(settings)
             self.fallbacks_action.setEnabled(True)
 
+    @Slot()
     def open_inifile(self):
         file_name, _ = QFileDialog.getOpenFileName(self, "Open INI File",
                 '', "INI Files (*.ini *.conf)")
@@ -170,6 +172,7 @@ class MainWindow(QMainWindow):
         self.set_settings_object(settings)
         self.fallbacks_action.setEnabled(False)
 
+    @Slot()
     def open_property_list(self):
         file_name, _ = QFileDialog.getOpenFileName(self,
                 "Open Property List", '', "Property List Files (*.plist)")
@@ -179,6 +182,7 @@ class MainWindow(QMainWindow):
             self.set_settings_object(settings)
             self.fallbacks_action.setEnabled(False)
 
+    @Slot()
     def open_registry_path(self):
         path, ok = QInputDialog.getText(self, "Open Registry Path",
                 "Enter the path in the Windows registry:",
@@ -189,6 +193,7 @@ class MainWindow(QMainWindow):
             self.set_settings_object(settings)
             self.fallbacks_action.setEnabled(False)
 
+    @Slot()
     def about(self):
         QMessageBox.about(self, "About Settings Editor",
                 "The <b>Settings Editor</b> example shows how to access "
@@ -473,6 +478,7 @@ class SettingsTree(QTreeWidget):
     def sizeHint(self):
         return QSize(800, 600)
 
+    @Slot(bool)
     def set_auto_refresh(self, autoRefresh):
         self.auto_refresh = autoRefresh
 
@@ -483,15 +489,18 @@ class SettingsTree(QTreeWidget):
             else:
                 self.refresh_timer.stop()
 
+    @Slot(bool)
     def set_fallbacks_enabled(self, enabled):
         if self.settings is not None:
             self.settings.setFallbacksEnabled(enabled)
             self.refresh()
 
+    @Slot()
     def maybe_refresh(self):
         if self.state() != QAbstractItemView.EditingState:
             self.refresh()
 
+    @Slot()
     def refresh(self):
         if self.settings is None:
             return
diff --git a/examples/corelib/threads/mandelbrot.py b/examples/corelib/threads/mandelbrot.py
index d92e8b604..b8cab06ef 100644
--- a/examples/corelib/threads/mandelbrot.py
+++ b/examples/corelib/threads/mandelbrot.py
@@ -9,7 +9,7 @@ import sys
 
 from PySide6.QtCore import (Signal, QMutex, QElapsedTimer, QMutexLocker,
                             QPoint, QPointF, QSize, Qt, QThread,
-                            QWaitCondition)
+                            QWaitCondition, Slot)
 from PySide6.QtGui import QColor, QImage, QPainter, QPixmap, qRgb
 from PySide6.QtWidgets import QApplication, QWidget
 
@@ -302,6 +302,7 @@ class MandelbrotWidget(QWidget):
             delta_y = (self.height() - self.pixmap.height()) / 2 - self._pixmap_offset.y()
             self.scroll(delta_x, delta_y)
 
+    @Slot(QImage,float)
     def update_pixmap(self, image, scale_factor):
         if not self._last_drag_pos.isNull():
             return
diff --git a/examples/datavisualization/surface/surfacegraph.py b/examples/datavisualization/surface/surfacegraph.py
index 231f6064a..69eea716c 100644
--- a/examples/datavisualization/surface/surfacegraph.py
+++ b/examples/datavisualization/surface/surfacegraph.py
@@ -71,6 +71,7 @@ class SurfaceGraph(QObject):
 
         self._sqrtSinProxy.resetArray(data_array)
 
+    @Slot(bool)
     def enable_sqrt_sin_model(self, enable):
         if enable:
             self._sqrtSinSeries.setDrawMode(QSurface3DSeries.DrawSurfaceAndWireframe)
@@ -102,6 +103,7 @@ class SurfaceGraph(QObject):
             self._axisMaxSliderZ.setMaximum(SAMPLE_COUNT_Z - 1)
             self._axisMaxSliderZ.setValue(SAMPLE_COUNT_Z - 1)
 
+    @Slot(bool)
     def enable_height_map_model(self, enable):
         if enable:
             self._heightMapSeries.setDrawMode(QSurface3DSeries.DrawSurface)
@@ -136,6 +138,7 @@ class SurfaceGraph(QObject):
             self._axisMaxSliderZ.setMaximum(map_grid_count_z - 1)
             self._axisMaxSliderZ.setValue(map_grid_count_z - 1)
 
+    @Slot(int)
     def adjust_xmin(self, minimum):
         min_x = self._stepX * float(minimum) + self._rangeMinX
 
@@ -147,6 +150,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_xmax(self, maximum):
         max_x = self._stepX * float(maximum) + self._rangeMinX
 
@@ -158,6 +162,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_zmin(self, minimum):
         min_z = self._stepZ * float(minimum) + self._rangeMinZ
 
@@ -169,6 +174,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_zrange(min_z, max_z)
 
+    @Slot(int)
     def adjust_zmax(self, maximum):
         max_x = self._stepZ * float(maximum) + self._rangeMinZ
 
@@ -186,10 +192,11 @@ class SurfaceGraph(QObject):
     def set_axis_zrange(self, minimum, maximum):
         self._graph.axisZ().setRange(minimum, maximum)
 
-    @Slot()
+    @Slot(int)
     def change_theme(self, theme):
         self._graph.activeTheme().setType(Q3DTheme.Theme(theme))
 
+    @Slot()
     def set_black_to_yellow_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.black)
@@ -201,6 +208,7 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def set_green_to_red_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.darkGreen)
@@ -212,17 +220,21 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def toggle_mode_none(self):
         self._graph.setSelectionMode(QAbstract3DGraph.SelectionNone)
 
+    @Slot()
     def toggle_mode_item(self):
         self._graph.setSelectionMode(QAbstract3DGraph.SelectionItem)
 
+    @Slot()
     def toggle_mode_slice_row(self):
         self._graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndRow | QAbstract3DGraph.SelectionSlice
         )
 
+    @Slot()
     def toggle_mode_slice_column(self):
         self._graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndColumn | QAbstract3DGraph.SelectionSlice
diff --git a/examples/datavisualization/surface_model_numpy/surfacegraph.py b/examples/datavisualization/surface_model_numpy/surfacegraph.py
index 126d50cbd..c0c1acecf 100644
--- a/examples/datavisualization/surface_model_numpy/surfacegraph.py
+++ b/examples/datavisualization/surface_model_numpy/surfacegraph.py
@@ -113,6 +113,7 @@ class SurfaceGraph(QObject):
         self.m_stepX = 0.0
         self.m_stepZ = 0.0
 
+    @Slot(bool)
     def enable_sqrt_sin_model(self, enable):
         if enable:
             self.m_sqrtSinSeries.setDrawMode(QSurface3DSeries.DrawSurfaceAndWireframe)
@@ -144,6 +145,7 @@ class SurfaceGraph(QObject):
             self.m_axisMaxSliderZ.setMaximum(SAMPLE_COUNT_Z - 1)
             self.m_axisMaxSliderZ.setValue(SAMPLE_COUNT_Z - 1)
 
+    @Slot(bool)
     def enable_height_map_model(self, enable):
         if enable:
             self.m_heightMapSeries.setDrawMode(QSurface3DSeries.DrawSurface)
@@ -178,6 +180,7 @@ class SurfaceGraph(QObject):
             self.m_axisMaxSliderZ.setMaximum(map_grid_count_z - 1)
             self.m_axisMaxSliderZ.setValue(map_grid_count_z - 1)
 
+    @Slot(int)
     def adjust_xmin(self, minimum):
         min_x = self.m_stepX * float(minimum) + self.m_rangeMinX
 
@@ -189,6 +192,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_xmax(self, maximum):
         max_x = self.m_stepX * float(maximum) + self.m_rangeMinX
 
@@ -200,6 +204,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_zmin(self, minimum):
         min_z = self.m_stepZ * float(minimum) + self.m_rangeMinZ
 
@@ -211,6 +216,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_zrange(min_z, max_z)
 
+    @Slot(int)
     def adjust_zmax(self, maximum):
         max_x = self.m_stepZ * float(maximum) + self.m_rangeMinZ
 
@@ -228,10 +234,11 @@ class SurfaceGraph(QObject):
     def set_axis_zrange(self, minimum, maximum):
         self.m_graph.axisZ().setRange(minimum, maximum)
 
-    @Slot()
+    @Slot(int)
     def change_theme(self, theme):
         self.m_graph.activeTheme().setType(Q3DTheme.Theme(theme))
 
+    @Slot()
     def set_black_to_yellow_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.black)
@@ -243,6 +250,7 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def set_green_to_red_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.darkGreen)
@@ -254,17 +262,21 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def toggle_mode_none(self):
         self.m_graph.setSelectionMode(QAbstract3DGraph.SelectionNone)
 
+    @Slot()
     def toggle_mode_item(self):
         self.m_graph.setSelectionMode(QAbstract3DGraph.SelectionItem)
 
+    @Slot()
     def toggle_mode_slice_row(self):
         self.m_graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndRow | QAbstract3DGraph.SelectionSlice
         )
 
+    @Slot()
     def toggle_mode_slice_column(self):
         self.m_graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndColumn | QAbstract3DGraph.SelectionSlice
diff --git a/examples/datavisualization/surface_numpy/surfacegraph.py b/examples/datavisualization/surface_numpy/surfacegraph.py
index b0700fa29..c9f6e75a9 100644
--- a/examples/datavisualization/surface_numpy/surfacegraph.py
+++ b/examples/datavisualization/surface_numpy/surfacegraph.py
@@ -71,6 +71,7 @@ class SurfaceGraph(QObject):
         self.m_stepX = 0.0
         self.m_stepZ = 0.0
 
+    @Slot(bool)
     def enable_sqrt_sin_model(self, enable):
         if enable:
             self.m_sqrtSinSeries.setDrawMode(QSurface3DSeries.DrawSurfaceAndWireframe)
@@ -102,6 +103,7 @@ class SurfaceGraph(QObject):
             self.m_axisMaxSliderZ.setMaximum(SAMPLE_COUNT_Z - 1)
             self.m_axisMaxSliderZ.setValue(SAMPLE_COUNT_Z - 1)
 
+    @Slot(bool)
     def enable_height_map_model(self, enable):
         if enable:
             self.m_heightMapSeries.setDrawMode(QSurface3DSeries.DrawSurface)
@@ -136,6 +138,7 @@ class SurfaceGraph(QObject):
             self.m_axisMaxSliderZ.setMaximum(map_grid_count_z - 1)
             self.m_axisMaxSliderZ.setValue(map_grid_count_z - 1)
 
+    @Slot(int)
     def adjust_xmin(self, minimum):
         min_x = self.m_stepX * float(minimum) + self.m_rangeMinX
 
@@ -147,6 +150,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_xmax(self, maximum):
         max_x = self.m_stepX * float(maximum) + self.m_rangeMinX
 
@@ -158,6 +162,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_xrange(min_x, max_x)
 
+    @Slot(int)
     def adjust_zmin(self, minimum):
         min_z = self.m_stepZ * float(minimum) + self.m_rangeMinZ
 
@@ -169,6 +174,7 @@ class SurfaceGraph(QObject):
 
         self.set_axis_zrange(min_z, max_z)
 
+    @Slot(int)
     def adjust_zmax(self, maximum):
         max_x = self.m_stepZ * float(maximum) + self.m_rangeMinZ
 
@@ -186,10 +192,11 @@ class SurfaceGraph(QObject):
     def set_axis_zrange(self, minimum, maximum):
         self.m_graph.axisZ().setRange(minimum, maximum)
 
-    @Slot()
+    @Slot(int)
     def change_theme(self, theme):
         self.m_graph.activeTheme().setType(Q3DTheme.Theme(theme))
 
+    @Slot()
     def set_black_to_yellow_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.black)
@@ -201,6 +208,7 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def set_green_to_red_gradient(self):
         gr = QLinearGradient()
         gr.setColorAt(0.0, Qt.darkGreen)
@@ -212,17 +220,21 @@ class SurfaceGraph(QObject):
         series.setBaseGradient(gr)
         series.setColorStyle(Q3DTheme.ColorStyleRangeGradient)
 
+    @Slot()
     def toggle_mode_none(self):
         self.m_graph.setSelectionMode(QAbstract3DGraph.SelectionNone)
 
+    @Slot()
     def toggle_mode_item(self):
         self.m_graph.setSelectionMode(QAbstract3DGraph.SelectionItem)
 
+    @Slot()
     def toggle_mode_slice_row(self):
         self.m_graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndRow | QAbstract3DGraph.SelectionSlice
         )
 
+    @Slot()
     def toggle_mode_slice_column(self):
         self.m_graph.setSelectionMode(
             QAbstract3DGraph.SelectionItemAndColumn | QAbstract3DGraph.SelectionSlice
diff --git a/examples/declarative/rendercontrol/rendercontrol_opengl/window_singlethreaded.py b/examples/declarative/rendercontrol/rendercontrol_opengl/window_singlethreaded.py
index e757c6c0e..164d6a08c 100644
--- a/examples/declarative/rendercontrol/rendercontrol_opengl/window_singlethreaded.py
+++ b/examples/declarative/rendercontrol/rendercontrol_opengl/window_singlethreaded.py
@@ -18,7 +18,7 @@ from PySide6.QtQml import QQmlComponent, QQmlEngine
 from PySide6.QtQuick import (QQuickGraphicsDevice,
                              QQuickItem, QQuickRenderControl,
                              QQuickRenderTarget, QQuickWindow)
-from PySide6.QtCore import QCoreApplication, QTimer, QUrl
+from PySide6.QtCore import QCoreApplication, QTimer, QUrl, Slot
 from shiboken6 import VoidPtr
 
 from cuberenderer import CubeRenderer
@@ -127,6 +127,7 @@ class WindowSingleThreaded(QWindow):
     def set_texture_id(self, texture_id):
         self.m_texture_ids[0] = texture_id
 
+    @Slot()
     def createTexture(self):
         # The scene graph has been initialized. It is now time to create a
         # texture and associate it with the QQuickWindow.
@@ -146,10 +147,12 @@ class WindowSingleThreaded(QWindow):
                                                       self.m_textureSize)
         self.m_quickWindow.setRenderTarget(target)
 
+    @Slot()
     def destroyTexture(self):
         self.m_context.functions().glDeleteTextures(1, self.m_texture_ids)
         self.set_texture_id(0)
 
+    @Slot()
     def render(self):
         if not self.m_context.makeCurrent(self.m_offscreenSurface):
             return
@@ -250,6 +253,7 @@ class WindowSingleThreaded(QWindow):
             and self.m_textureSize != self.size() * self.devicePixelRatio()):
             self.resizeTexture()
 
+    @Slot()
     def handleScreenChange(self):
         if self.m_dpr != self.devicePixelRatio():
             self.resizeTexture()
diff --git a/examples/multimedia/audiooutput/audiooutput.py b/examples/multimedia/audiooutput/audiooutput.py
index ed27a0a9c..6cabebb68 100644
--- a/examples/multimedia/audiooutput/audiooutput.py
+++ b/examples/multimedia/audiooutput/audiooutput.py
@@ -251,7 +251,7 @@ class AudioTest(QMainWindow):
         QAudio.StoppedState: "StoppedState",
         QAudio.IdleState: "IdleState"}
 
-    @Slot(QAudio.State)
+    @Slot("QAudio::State")
     def handle_state_changed(self, state):
         state = self.state_map.get(state, 'Unknown')
         qWarning(f"state = {state}")
diff --git a/examples/multimedia/player/player.py b/examples/multimedia/player/player.py
index a7af1eaf5..c8a1d57a5 100644
--- a/examples/multimedia/player/player.py
+++ b/examples/multimedia/player/player.py
@@ -165,6 +165,7 @@ class MainWindow(QMainWindow):
             self._playlist_index += 1
             self._player.setSource(self._playlist[self._playlist_index])
 
+    @Slot("QMediaPlayer::PlaybackState")
     def update_buttons(self, state):
         media_count = len(self._playlist)
         self._play_action.setEnabled(media_count > 0
@@ -177,7 +178,7 @@ class MainWindow(QMainWindow):
     def show_status_message(self, message):
         self.statusBar().showMessage(message, 5000)
 
-    @Slot(QMediaPlayer.Error, str)
+    @Slot("QMediaPlayer::Error", str)
     def _player_error(self, error, error_string):
         print(error_string, file=sys.stderr)
         self.show_status_message(error_string)
diff --git a/examples/network/googlesuggest/googlesuggest.py b/examples/network/googlesuggest/googlesuggest.py
index 6dac0eb22..3cb9f757d 100644
--- a/examples/network/googlesuggest/googlesuggest.py
+++ b/examples/network/googlesuggest/googlesuggest.py
@@ -118,7 +118,7 @@ class GSuggestCompletion(QObject):
     def prevent_suggest(self):
         self.timer.stop()
 
-    @Slot()
+    @Slot(QNetworkReply)
     def handle_network_data(self, network_reply: QNetworkReply):
         url = network_reply.url()
         if network_reply.error() == QNetworkReply.NoError:
diff --git a/examples/opengl/contextinfo/contextinfo.py b/examples/opengl/contextinfo/contextinfo.py
index f66d5a46f..5ca7ecb26 100644
--- a/examples/opengl/contextinfo/contextinfo.py
+++ b/examples/opengl/contextinfo/contextinfo.py
@@ -9,7 +9,8 @@ import sys
 from textwrap import dedent
 
 
-from PySide6.QtCore import QCoreApplication, QLibraryInfo, QSize, QTimer, Qt
+from PySide6.QtCore import (QCoreApplication, QLibraryInfo, QSize, QTimer, Qt,
+                            Slot)
 from PySide6.QtGui import (QMatrix4x4, QOpenGLContext, QSurfaceFormat, QWindow)
 from PySide6.QtOpenGL import (QOpenGLBuffer, QOpenGLShader,
                               QOpenGLShaderProgram, QOpenGLVertexArrayObject)
@@ -192,6 +193,7 @@ class RenderWindow(QWindow):
         self.context.swapBuffers(self)
         self.context.doneCurrent()
 
+    @Slot()
     def slot_timer(self):
         self.render()
         self.angle += 1
diff --git a/examples/opengl/hellogl2/hellogl2.py b/examples/opengl/hellogl2/hellogl2.py
index 7520f6bc6..7ea3b7ad3 100644
--- a/examples/opengl/hellogl2/hellogl2.py
+++ b/examples/opengl/hellogl2/hellogl2.py
@@ -8,7 +8,8 @@ from argparse import ArgumentParser, RawTextHelpFormatter
 import ctypes
 import math
 import sys
-from PySide6.QtCore import QCoreApplication, Signal, SIGNAL, SLOT, Qt, QSize, QPointF
+from PySide6.QtCore import (QCoreApplication, Signal, Slot,
+                            Qt, QSize, QPointF)
 from PySide6.QtGui import (QVector3D, QOpenGLFunctions,
     QMatrix4x4, QOpenGLContext, QSurfaceFormat, QVector3DList)
 from PySide6.QtOpenGL import (QOpenGLVertexArrayObject, QOpenGLBuffer,
@@ -228,6 +229,7 @@ class GLWidget(QOpenGLWidget, QOpenGLFunctions):
             angle -= 360 * 16
         return angle
 
+    @Slot(int)
     def set_xrotation(self, angle):
         angle = self.normalize_angle(angle)
         if angle != self._x_rot:
@@ -235,6 +237,7 @@ class GLWidget(QOpenGLWidget, QOpenGLFunctions):
             self.x_rotation_changed.emit(angle)
             self.update()
 
+    @Slot(int)
     def set_yrotation(self, angle):
         angle = self.normalize_angle(angle)
         if angle != self._y_rot:
@@ -242,6 +245,7 @@ class GLWidget(QOpenGLWidget, QOpenGLFunctions):
             self.y_rotation_changed.emit(angle)
             self.update()
 
+    @Slot(int)
     def set_zrotation(self, angle):
         angle = self.normalize_angle(angle)
         if angle != self._z_rot:
@@ -249,6 +253,7 @@ class GLWidget(QOpenGLWidget, QOpenGLFunctions):
             self.z_rotation_changed.emit(angle)
             self.update()
 
+    @Slot()
     def cleanup(self):
         self.makeCurrent()
         self._logo_vbo.destroy()
diff --git a/examples/opengl/threadedqopenglwidget/glwidget.py b/examples/opengl/threadedqopenglwidget/glwidget.py
index 68a86dc77..edb88e77c 100644
--- a/examples/opengl/threadedqopenglwidget/glwidget.py
+++ b/examples/opengl/threadedqopenglwidget/glwidget.py
@@ -68,6 +68,7 @@ class GLWidget(QOpenGLWidget):
     def on_resized(self):
         self._renderer.unlock_renderer()
 
+    @Slot()
     def grab_context(self):
         if not self._renderer:
             return
diff --git a/examples/texttospeech/hello_speak/hello_speak.py b/examples/texttospeech/hello_speak/hello_speak.py
index f511ac6f1..d7612f362 100644
--- a/examples/texttospeech/hello_speak/hello_speak.py
+++ b/examples/texttospeech/hello_speak/hello_speak.py
@@ -4,7 +4,7 @@
 """PySide6 QTextToSpeech example"""
 
 import sys
-from PySide6.QtCore import Qt
+from PySide6.QtCore import Qt, Slot
 from PySide6.QtWidgets import (QApplication, QComboBox, QFormLayout,
     QHBoxLayout, QLineEdit, QMainWindow, QPushButton, QSlider, QWidget)
 
@@ -53,12 +53,14 @@ class MainWindow(QMainWindow):
             self.setWindowTitle('QTextToSpeech Example (no engines available)')
             self.sayButton.setEnabled(False)
 
+    @Slot()
     def say(self):
         self.sayButton.setEnabled(False)
         self.engine.setVoice(self.voices[self.voiceCombo.currentIndex()])
         self.engine.setVolume(float(self.volumeSlider.value()) / 100)
         self.engine.say(self.text.text())
 
+    @Slot("QTextToSpeech::State")
     def stateChanged(self, state):
         if (state == QTextToSpeech.State.Ready):
             self.sayButton.setEnabled(True)
diff --git a/examples/webenginewidgets/markdowneditor/mainwindow.py b/examples/webenginewidgets/markdowneditor/mainwindow.py
index 214dc2b05..3f18d29a5 100644
--- a/examples/webenginewidgets/markdowneditor/mainwindow.py
+++ b/examples/webenginewidgets/markdowneditor/mainwindow.py
@@ -47,7 +47,7 @@ class MainWindow(QMainWindow):
         data = defaultTextFile.readAll()
         self._ui.editor.setPlainText(data.data().decode('utf8'))
 
-    @Slot(str)
+    @Slot()
     def plainTextEditChanged(self):
         self.m_content.setText(self._ui.editor.toPlainText())
 
diff --git a/examples/webenginewidgets/simplebrowser/simplebrowser.py b/examples/webenginewidgets/simplebrowser/simplebrowser.py
index e61d9401f..48f60c6a8 100644
--- a/examples/webenginewidgets/simplebrowser/simplebrowser.py
+++ b/examples/webenginewidgets/simplebrowser/simplebrowser.py
@@ -4,7 +4,7 @@
 """PySide6 WebEngineWidgets Example"""
 
 import sys
-from PySide6.QtCore import QUrl
+from PySide6.QtCore import QUrl, Slot
 from PySide6.QtGui import QIcon
 from PySide6.QtWidgets import (QApplication, QLineEdit,
     QMainWindow, QPushButton, QToolBar)
@@ -42,17 +42,21 @@ class MainWindow(QMainWindow):
         self.webEngineView.page().titleChanged.connect(self.setWindowTitle)
         self.webEngineView.page().urlChanged.connect(self.urlChanged)
 
+    @Slot()
     def load(self):
         url = QUrl.fromUserInput(self.addressLineEdit.text())
         if url.isValid():
             self.webEngineView.load(url)
 
+    @Slot()
     def back(self):
         self.webEngineView.page().triggerAction(QWebEnginePage.Back)
 
+    @Slot()
     def forward(self):
         self.webEngineView.page().triggerAction(QWebEnginePage.Forward)
 
+    @Slot(QUrl)
     def urlChanged(self, url):
         self.addressLineEdit.setText(url.toString())
 
diff --git a/examples/webenginewidgets/tabbedbrowser/browsertabwidget.py b/examples/webenginewidgets/tabbedbrowser/browsertabwidget.py
index bd96dd89c..79dc0c78b 100644
--- a/examples/webenginewidgets/tabbedbrowser/browsertabwidget.py
+++ b/examples/webenginewidgets/tabbedbrowser/browsertabwidget.py
@@ -6,8 +6,8 @@ from functools import partial
 from bookmarkwidget import BookmarkWidget
 from webengineview import WebEngineView
 from historywindow import HistoryWindow
-from PySide6 import QtCore
-from PySide6.QtCore import Qt, QUrl
+from PySide6.QtCore import Qt, QUrl, Signal, Slot
+from PySide6.QtGui import QIcon
 from PySide6.QtWidgets import QMenu, QTabBar, QTabWidget
 from PySide6.QtWebEngineCore import QWebEngineDownloadRequest, QWebEnginePage
 
@@ -15,9 +15,9 @@ from PySide6.QtWebEngineCore import QWebEngineDownloadRequest, QWebEnginePage
 class BrowserTabWidget(QTabWidget):
     """Enables having several tabs with QWebEngineView."""
 
-    url_changed = QtCore.Signal(QUrl)
-    enabled_changed = QtCore.Signal(QWebEnginePage.WebAction, bool)
-    download_requested = QtCore.Signal(QWebEngineDownloadRequest)
+    url_changed = Signal(QUrl)
+    enabled_changed = Signal(QWebEnginePage.WebAction, bool)
+    download_requested = Signal(QWebEngineDownloadRequest)
 
     def __init__(self, window_factory_function):
         super().__init__()
@@ -67,21 +67,25 @@ class BrowserTabWidget(QTabWidget):
         index = self.currentIndex()
         return self._webengineviews[index].url() if index >= 0 else QUrl()
 
+    @Slot(QUrl)
     def _url_changed(self, url):
         index = self.currentIndex()
         if index >= 0 and self._webengineviews[index] == self.sender():
                 self.url_changed.emit(url)
 
+    @Slot(str)
     def _title_changed(self, title):
         index = self._index_of_page(self.sender())
         if (index >= 0):
             self.setTabText(index, BookmarkWidget.short_title(title))
 
+    @Slot(QIcon)
     def _icon_changed(self, icon):
         index = self._index_of_page(self.sender())
         if (index >= 0):
             self.setTabIcon(index, icon)
 
+    @Slot(object,bool)
     def _enabled_changed(self, web_action, enabled):
         index = self.currentIndex()
         if index >= 0 and self._webengineviews[index] == self.sender():
@@ -203,5 +207,6 @@ class BrowserTabWidget(QTabWidget):
                 return p
         return -1
 
+    @Slot(QWebEngineDownloadRequest)
     def _download_requested(self, item):
         self.download_requested.emit(item)
diff --git a/examples/webenginewidgets/tabbedbrowser/webengineview.py b/examples/webenginewidgets/tabbedbrowser/webengineview.py
index 354cc50bc..95eb01f14 100644
--- a/examples/webenginewidgets/tabbedbrowser/webengineview.py
+++ b/examples/webenginewidgets/tabbedbrowser/webengineview.py
@@ -4,7 +4,7 @@
 from PySide6.QtWebEngineCore import QWebEnginePage
 from PySide6.QtWebEngineWidgets import QWebEngineView
 
-from PySide6 import QtCore
+from PySide6.QtCore import Signal, Slot
 
 _web_actions = [QWebEnginePage.Back, QWebEnginePage.Forward,
                 QWebEnginePage.Reload,
@@ -15,7 +15,7 @@ _web_actions = [QWebEnginePage.Back, QWebEnginePage.Forward,
 
 class WebEngineView(QWebEngineView):
 
-    enabled_changed = QtCore.Signal(QWebEnginePage.WebAction, bool)
+    enabled_changed = Signal(QWebEnginePage.WebAction, bool)
 
     @staticmethod
     def web_actions():
@@ -49,6 +49,7 @@ class WebEngineView(QWebEngineView):
             return self._tab_factory_func()
         return self._window_factory_func()
 
+    @Slot()
     def _enabled_changed(self):
         action = self.sender()
         web_action = self._actions[action]
diff --git a/examples/widgets/codeeditor/codeeditor.py b/examples/widgets/codeeditor/codeeditor.py
index 635dcb7a8..22f0b685b 100644
--- a/examples/widgets/codeeditor/codeeditor.py
+++ b/examples/widgets/codeeditor/codeeditor.py
@@ -69,11 +69,11 @@ class CodeEditor(QPlainTextEdit):
                 bottom = top + self.blockBoundingRect(block).height()
                 block_number += 1
 
-    @Slot()
+    @Slot(int)
     def update_line_number_area_width(self, newBlockCount):
         self.setViewportMargins(self.line_number_area_width(), 0, 0, 0)
 
-    @Slot()
+    @Slot(QRect, int)
     def update_line_number_area(self, rect, dy):
         if dy:
             self.line_number_area.scroll(0, dy)
diff --git a/examples/widgets/desktop/screenshot/screenshot.py b/examples/widgets/desktop/screenshot/screenshot.py
index c818984dd..a5688da7a 100644
--- a/examples/widgets/desktop/screenshot/screenshot.py
+++ b/examples/widgets/desktop/screenshot/screenshot.py
@@ -5,7 +5,8 @@
 
 import sys
 
-from PySide6.QtCore import QDir, QPoint, QRect, QStandardPaths, Qt, QTimer
+from PySide6.QtCore import (QDir, QPoint, QRect, QStandardPaths, Qt, QTimer,
+                            Slot)
 from PySide6.QtGui import QGuiApplication, QImageWriter
 from PySide6.QtWidgets import (QApplication, QCheckBox, QDialog, QFileDialog,
                                QGridLayout, QGroupBox, QHBoxLayout, QLabel,
@@ -72,6 +73,7 @@ class Screenshot(QWidget):
         if scaled_size != self.screenshot_label.pixmap().size():
             self.update_screenshot_label()
 
+    @Slot()
     def new_screenshot(self):
         if self.hide_this_window_checkbox.isChecked():
             self.hide()
@@ -79,6 +81,7 @@ class Screenshot(QWidget):
 
         QTimer.singleShot(self.delay_spinbox.value() * 1000, self.shoot_screen)
 
+    @Slot()
     def save_screenshot(self):
         fmt = "png"  # In order to avoid shadowing built-in format
         initial_path = QStandardPaths.writableLocation(QStandardPaths.PicturesLocation)
@@ -127,6 +130,7 @@ class Screenshot(QWidget):
         if self.hide_this_window_checkbox.isChecked():
             self.show()
 
+    @Slot()
     def update_checkbox(self):
         if self.delay_spinbox.value() == 0:
             self.hide_this_window_checkbox.setDisabled(True)
diff --git a/examples/widgets/dialogs/standarddialogs/standarddialogs.py b/examples/widgets/dialogs/standarddialogs/standarddialogs.py
index 22f4b9eb6..046d738be 100644
--- a/examples/widgets/dialogs/standarddialogs/standarddialogs.py
+++ b/examples/widgets/dialogs/standarddialogs/standarddialogs.py
@@ -5,7 +5,7 @@
 """PySide6 port of the widgets/dialogs/standarddialogs example from Qt v5.x"""
 
 import sys
-from PySide6.QtCore import QDir, QRect, Qt
+from PySide6.QtCore import QDir, QRect, Qt, Slot
 from PySide6.QtGui import QFont, QPalette, QScreen
 from PySide6.QtWidgets import (QApplication, QColorDialog, QCheckBox, QDialog,
                                QErrorMessage, QFontDialog, QFileDialog, QFrame,
@@ -237,18 +237,21 @@ class Dialog(QDialog):
 
         self.setWindowTitle("Standard Dialogs")
 
+    @Slot()
     def set_integer(self):
         i, ok = QInputDialog.getInt(self,
                 "QInputDialog.getInteger()", "Percentage:", 25, 0, 100, 1)
         if ok:
             self._integer_label.setText(f"{i}%")
 
+    @Slot()
     def set_double(self):
         d, ok = QInputDialog.getDouble(self, "QInputDialog.getDouble()",
                 "Amount:", 37.56, -10000, 10000, 2)
         if ok:
             self._double_label.setText(f"${d:g}")
 
+    @Slot()
     def set_item(self):
         items = ("Spring", "Summer", "Fall", "Winter")
 
@@ -257,6 +260,7 @@ class Dialog(QDialog):
         if ok and item:
             self._item_label.setText(item)
 
+    @Slot()
     def set_text(self):
         text, ok = QInputDialog.getText(self, "QInputDialog.getText()",
                 "User name:", QLineEdit.Normal,
@@ -264,12 +268,14 @@ class Dialog(QDialog):
         if ok and text != '':
             self._text_label.setText(text)
 
+    @Slot()
     def set_multiline_text(self):
         text, ok = QInputDialog.getMultiLineText(self, "QInputDialog::getMultiLineText()",
                 "Address:", "John Doe\nFreedom Street")
         if ok and text != '':
             self._multiline_text_label.setText(text)
 
+    @Slot()
     def set_color(self):
         options_value = self._color_options.value()
         options = QColorDialog.ColorDialogOptions(options_value)
@@ -280,6 +286,7 @@ class Dialog(QDialog):
             self._color_label.setPalette(QPalette(color))
             self._color_label.setAutoFillBackground(True)
 
+    @Slot()
     def set_font(self):
         options_value = self._font_options.value()
         options = QFontDialog.FontDialogOptions(options_value)
@@ -294,6 +301,7 @@ class Dialog(QDialog):
             self._font_label.setText(font.key())
             self._font_label.setFont(font)
 
+    @Slot()
     def set_existing_directory(self):
         options_value = self._file_options.value()
         options = QFileDialog.Options(options_value) | QFileDialog.ShowDirsOnly
@@ -304,6 +312,7 @@ class Dialog(QDialog):
         if directory:
             self._directory_label.setText(directory)
 
+    @Slot()
     def set_open_file_name(self):
         options_value = self._file_options.value()
         options = QFileDialog.Options(options_value)
@@ -315,6 +324,7 @@ class Dialog(QDialog):
         if fileName:
             self._open_file_name_label.setText(fileName)
 
+    @Slot()
     def set_open_file_names(self):
         options_value = self._file_options.value()
         options = QFileDialog.Options(options_value)
@@ -327,6 +337,7 @@ class Dialog(QDialog):
             file_list = ', '.join(files)
             self._open_file_names_label.setText(f"[{file_list}]")
 
+    @Slot()
     def set_save_file_name(self):
         options_value = self._file_options.value()
         options = QFileDialog.Options(options_value)
@@ -338,6 +349,7 @@ class Dialog(QDialog):
         if fileName:
             self._save_file_name_label.setText(fileName)
 
+    @Slot()
     def critical_message(self):
         reply = QMessageBox.critical(self, "QMessageBox.critical()",
                 Dialog.MESSAGE,
@@ -349,6 +361,7 @@ class Dialog(QDialog):
         else:
             self._critical_label.setText("Ignore")
 
+    @Slot()
     def information_message(self):
         reply = QMessageBox.information(self,
                 "QMessageBox.information()", Dialog.MESSAGE)
@@ -357,6 +370,7 @@ class Dialog(QDialog):
         else:
             self._information_label.setText("Escape")
 
+    @Slot()
     def question_message(self):
         reply = QMessageBox.question(self, "QMessageBox.question()",
                 Dialog.MESSAGE,
@@ -368,6 +382,7 @@ class Dialog(QDialog):
         else:
             self._question_label.setText("Cancel")
 
+    @Slot()
     def warning_message(self):
         msg_box = QMessageBox(QMessageBox.Warning,
                 "QMessageBox.warning()", Dialog.MESSAGE,
@@ -379,6 +394,7 @@ class Dialog(QDialog):
         else:
             self._warning_label.setText("Continue")
 
+    @Slot()
     def error_message(self):
         self._error_message_dialog.showMessage("This dialog shows and remembers "
                 "error messages. If the checkbox is checked (as it is by "
diff --git a/examples/widgets/graphicsview/diagramscene/diagramscene.py b/examples/widgets/graphicsview/diagramscene/diagramscene.py
index e653285c4..42ec7c544 100644
--- a/examples/widgets/graphicsview/diagramscene/diagramscene.py
+++ b/examples/widgets/graphicsview/diagramscene/diagramscene.py
@@ -6,10 +6,11 @@ import math
 import sys
 
 from PySide6.QtCore import (QLineF, QPointF, QRect, QRectF, QSize, QSizeF, Qt,
-                            Signal)
+                            Signal, Slot)
 from PySide6.QtGui import (QAction, QColor, QFont, QIcon, QIntValidator,
                            QPainter, QPainterPath, QPen, QPixmap, QPolygonF)
-from PySide6.QtWidgets import (QApplication, QButtonGroup, QComboBox,
+from PySide6.QtWidgets import (QAbstractButton, QApplication, QButtonGroup,
+                               QComboBox,
                                QFontComboBox, QGraphicsAnchorLayout,
                                QGraphicsItem, QGraphicsLineItem,
                                QGraphicsPolygonItem, QGraphicsTextItem,
@@ -382,6 +383,7 @@ class MainWindow(QMainWindow):
         self.setCentralWidget(self.widget)
         self.setWindowTitle("Diagramscene")
 
+    @Slot(QAbstractButton)
     def background_button_group_clicked(self, button):
         buttons = self._background_button_group.buttons()
         for myButton in buttons:
@@ -401,6 +403,7 @@ class MainWindow(QMainWindow):
         self.scene.update()
         self.view.update()
 
+    @Slot(int)
     def button_group_clicked(self, idx):
         buttons = self._button_group.buttons()
         for button in buttons:
@@ -413,15 +416,18 @@ class MainWindow(QMainWindow):
             self.scene.set_item_type(idx)
             self.scene.set_mode(DiagramScene.InsertItem)
 
+    @Slot()
     def delete_item(self):
         for item in self.scene.selectedItems():
             if isinstance(item, DiagramItem):
                 item.remove_arrows()
             self.scene.removeItem(item)
 
+    @Slot(int)
     def pointer_group_clicked(self, i):
         self.scene.set_mode(self._pointer_type_group.checkedId())
 
+    @Slot()
     def bring_to_front(self):
         if not self.scene.selectedItems():
             return
@@ -435,6 +441,7 @@ class MainWindow(QMainWindow):
                 z_value = item.zValue() + 0.1
         selected_item.setZValue(z_value)
 
+    @Slot()
     def send_to_back(self):
         if not self.scene.selectedItems():
             return
@@ -448,21 +455,26 @@ class MainWindow(QMainWindow):
                 z_value = item.zValue() - 0.1
         selected_item.setZValue(z_value)
 
+    @Slot(QGraphicsPolygonItem)
     def item_inserted(self, item):
         self._pointer_type_group.button(DiagramScene.MoveItem).setChecked(True)
         self.scene.set_mode(self._pointer_type_group.checkedId())
         self._button_group.button(item.diagram_type).setChecked(False)
 
+    @Slot(QGraphicsTextItem)
     def text_inserted(self, item):
         self._button_group.button(self.insert_text_button).setChecked(False)
         self.scene.set_mode(self._pointer_type_group.checkedId())
 
+    @Slot(QFont)
     def current_font_changed(self, font):
         self.handle_font_change()
 
+    @Slot(int)
     def font_size_changed(self, font):
         self.handle_font_change()
 
+    @Slot(str)
     def scene_scale_changed(self, scale):
         new_scale = int(scale[:-1]) / 100.0
         old_matrix = self.view.transform()
@@ -470,6 +482,7 @@ class MainWindow(QMainWindow):
         self.view.translate(old_matrix.dx(), old_matrix.dy())
         self.view.scale(new_scale, new_scale)
 
+    @Slot()
     def text_color_changed(self):
         self._text_action = self.sender()
         self._font_color_tool_button.setIcon(self.create_color_tool_button_icon(
@@ -477,6 +490,7 @@ class MainWindow(QMainWindow):
                     QColor(self._text_action.data())))
         self.text_button_triggered()
 
+    @Slot()
     def item_color_changed(self):
         self._fill_action = self.sender()
         self._fill_color_tool_button.setIcon(self.create_color_tool_button_icon(
@@ -484,6 +498,7 @@ class MainWindow(QMainWindow):
                     QColor(self._fill_action.data())))
         self.fill_button_triggered()
 
+    @Slot()
     def line_color_changed(self):
         self._line_action = self.sender()
         self._line_color_tool_button.setIcon(self.create_color_tool_button_icon(
@@ -491,15 +506,19 @@ class MainWindow(QMainWindow):
                     QColor(self._line_action.data())))
         self.line_button_triggered()
 
+    @Slot()
     def text_button_triggered(self):
         self.scene.set_text_color(QColor(self._text_action.data()))
 
+    @Slot()
     def fill_button_triggered(self):
         self.scene.set_item_color(QColor(self._fill_action.data()))
 
+    @Slot()
     def line_button_triggered(self):
         self.scene.set_line_color(QColor(self._line_action.data()))
 
+    @Slot()
     def handle_font_change(self):
         font = self._font_combo.currentFont()
         font.setPointSize(int(self._font_size_combo.currentText()))
@@ -512,6 +531,7 @@ class MainWindow(QMainWindow):
 
         self.scene.set_font(font)
 
+    @Slot(QGraphicsItem)
     def item_selected(self, item):
         font = item.font()
         color = item.defaultTextColor()
@@ -521,6 +541,7 @@ class MainWindow(QMainWindow):
         self._italic_action.setChecked(font.italic())
         self._underline_action.setChecked(font.underline())
 
+    @Slot()
     def about(self):
         QMessageBox.about(self, "About Diagram Scene",
                 "The <b>Diagram Scene</b> example shows use of the graphics framework.")
diff --git a/examples/widgets/itemviews/address_book/address_book.py b/examples/widgets/itemviews/address_book/address_book.py
index 2121f2783..2e1f6b9b0 100644
--- a/examples/widgets/itemviews/address_book/address_book.py
+++ b/examples/widgets/itemviews/address_book/address_book.py
@@ -2,6 +2,7 @@
 # Copyright (C) 2022 The Qt Company Ltd.
 # SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
+from PySide6.QtCore import Slot
 from PySide6.QtGui import QAction
 from PySide6.QtWidgets import (QMainWindow, QFileDialog, QApplication)
 
@@ -60,11 +61,13 @@ class MainWindow(QMainWindow):
     #
     # In PySide6, these functions return a tuple: (filename, filter)
 
+    @Slot()
     def open_file(self):
         filename, _ = QFileDialog.getOpenFileName(self)
         if filename:
             self._address_widget.read_from_file(filename)
 
+    @Slot()
     def save_file(self):
         filename, _ = QFileDialog.getSaveFileName(self)
         if filename:
diff --git a/examples/widgets/itemviews/address_book/addresswidget.py b/examples/widgets/itemviews/address_book/addresswidget.py
index 7987ae3cd..ab1330e48 100644
--- a/examples/widgets/itemviews/address_book/addresswidget.py
+++ b/examples/widgets/itemviews/address_book/addresswidget.py
@@ -7,7 +7,7 @@ try:
 except ImportError:
     import pickle
 
-from PySide6.QtCore import (Qt, Signal, QRegularExpression, QModelIndex,
+from PySide6.QtCore import (Qt, Signal, Slot, QRegularExpression, QModelIndex,
                             QItemSelection, QSortFilterProxyModel)
 from PySide6.QtWidgets import QTabWidget, QMessageBox, QTableView, QAbstractItemView
 
@@ -35,6 +35,7 @@ class AddressWidget(QTabWidget):
 
         self.setup_tabs()
 
+    @Slot()
     def add_entry(self, name=None, address=None):
         """ Add an entry to the addressbook. """
         if name is None and address is None:
@@ -83,6 +84,7 @@ class AddressWidget(QTabWidget):
             table_view = self.currentWidget()
             table_view.resizeRowToContents(ix.row())
 
+    @Slot()
     def edit_entry(self):
         """ Edit an entry in the addressbook. """
         table_view = self.currentWidget()
@@ -115,6 +117,7 @@ class AddressWidget(QTabWidget):
                 ix = self._table_model.index(row, 1, QModelIndex())
                 self._table_model.setData(ix, new_address, Qt.EditRole)
 
+    @Slot()
     def remove_entry(self):
         """ Remove an entry from the addressbook. """
         table_view = self.currentWidget()
diff --git a/examples/widgets/itemviews/basicfiltermodel/basicsortfiltermodel.py b/examples/widgets/itemviews/basicfiltermodel/basicsortfiltermodel.py
index a61a76cb8..834237404 100644
--- a/examples/widgets/itemviews/basicfiltermodel/basicsortfiltermodel.py
+++ b/examples/widgets/itemviews/basicfiltermodel/basicsortfiltermodel.py
@@ -4,7 +4,7 @@
 
 import sys
 from PySide6.QtCore import (QDate, QDateTime, QRegularExpression,
-                            QSortFilterProxyModel, QTime, Qt)
+                            QSortFilterProxyModel, QTime, Qt, Slot)
 from PySide6.QtGui import QStandardItemModel
 from PySide6.QtWidgets import (QApplication, QCheckBox, QComboBox, QGridLayout,
                                QGroupBox, QHBoxLayout, QLabel, QLineEdit,
@@ -102,6 +102,7 @@ class Window(QWidget):
         self._proxy_model.setSourceModel(model)
         self._source_view.setModel(model)
 
+    @Slot()
     def filter_reg_exp_changed(self):
         syntax_nr = self._filter_syntax_combo_box.currentData()
         pattern = self._filter_pattern_line_edit.text()
@@ -117,9 +118,11 @@ class Window(QWidget):
             reg_exp.setPatternOptions(options)
         self._proxy_model.setFilterRegularExpression(reg_exp)
 
+    @Slot()
     def filter_column_changed(self):
         self._proxy_model.setFilterKeyColumn(self._filter_column_combo_box.currentIndex())
 
+    @Slot()
     def sort_changed(self):
         if self._sort_case_sensitivity_check_box.isChecked():
             case_sensitivity = Qt.CaseSensitive
diff --git a/examples/widgets/itemviews/fetchmore/fetchmore.py b/examples/widgets/itemviews/fetchmore/fetchmore.py
index 08617edad..1943273c6 100644
--- a/examples/widgets/itemviews/fetchmore/fetchmore.py
+++ b/examples/widgets/itemviews/fetchmore/fetchmore.py
@@ -113,7 +113,7 @@ class Window(QWidget):
 
         self.setWindowTitle("Fetch More Example")
 
-    @Slot(str, int, int)
+    @Slot(str,int,int,int)
     def update_log(self, path, start, number, total):
         native_path = QDir.toNativeSeparators(path)
         last = start + number - 1
diff --git a/examples/widgets/itemviews/spreadsheet/spreadsheet.py b/examples/widgets/itemviews/spreadsheet/spreadsheet.py
index 2f5fbb64f..82ebe5ebb 100644
--- a/examples/widgets/itemviews/spreadsheet/spreadsheet.py
+++ b/examples/widgets/itemviews/spreadsheet/spreadsheet.py
@@ -134,7 +134,7 @@ class SpreadSheet(QMainWindow):
         about_menu = self.menuBar().addMenu("&Help")
         about_menu.addAction(self._about_spreadsheet)
 
-    @Slot()
+    @Slot(QTableWidgetItem)
     def update_status(self, item: QTableWidgetItem) -> None:
         if item and item == self._table.currentItem():
             self.statusBar().showMessage(str(item.data(Qt.StatusTipRole)), 1000)
@@ -144,7 +144,7 @@ class SpreadSheet(QMainWindow):
                 )
             )
 
-    @Slot()
+    @Slot(QTableWidgetItem)
     def update_color(self, item: QTableWidgetItem) -> None:
         pix = QPixmap(16, 16)
         col = QColor()
@@ -169,7 +169,7 @@ class SpreadSheet(QMainWindow):
 
         self._color_action.setIcon(pix)
 
-    @Slot()
+    @Slot(QTableWidgetItem)
     def update_line_edit(self, item: QTableWidgetItem) -> None:
         if item != self._table.currentItem():
             return
diff --git a/examples/widgets/mainwindows/application/application.py b/examples/widgets/mainwindows/application/application.py
index 79c3b0f03..6fb01e912 100644
--- a/examples/widgets/mainwindows/application/application.py
+++ b/examples/widgets/mainwindows/application/application.py
@@ -6,7 +6,7 @@ from argparse import ArgumentParser, RawTextHelpFormatter
 import sys
 
 from PySide6.QtCore import (QByteArray, QFile, QFileInfo, QSaveFile, QSettings,
-                            QTextStream, Qt)
+                            QTextStream, Qt, Slot)
 from PySide6.QtGui import QAction, QIcon, QKeySequence
 from PySide6.QtWidgets import (QApplication, QFileDialog, QMainWindow,
                                QMessageBox, QTextEdit, QWidget)
@@ -42,23 +42,27 @@ class MainWindow(QMainWindow):
         else:
             event.ignore()
 
+    @Slot()
     def new_file(self):
         if self.maybe_save():
             self._text_edit.clear()
             self.set_current_file('')
 
+    @Slot()
     def open(self):
         if self.maybe_save():
             fileName, filtr = QFileDialog.getOpenFileName(self)
             if fileName:
                 self.load_file(fileName)
 
+    @Slot()
     def save(self):
         if self._cur_file:
             return self.save_file(self._cur_file)
 
         return self.save_as()
 
+    @Slot()
     def save_as(self):
         fileName, filtr = QFileDialog.getSaveFileName(self)
         if fileName:
@@ -66,12 +70,14 @@ class MainWindow(QMainWindow):
 
         return False
 
+    @Slot()
     def about(self):
         QMessageBox.about(self, "About Application",
                 "The <b>Application</b> example demonstrates how to write "
                 "modern GUI applications using Qt, with a menu bar, "
                 "toolbars, and a status bar.")
 
+    @Slot()
     def document_was_modified(self):
         self.setWindowModified(self._text_edit.document().isModified())
 
diff --git a/examples/widgets/mainwindows/mdi/mdi.py b/examples/widgets/mainwindows/mdi/mdi.py
index af402ffe8..de6b2b960 100644
--- a/examples/widgets/mainwindows/mdi/mdi.py
+++ b/examples/widgets/mainwindows/mdi/mdi.py
@@ -9,7 +9,7 @@ from functools import partial
 import sys
 
 from PySide6.QtCore import (QByteArray, QFile, QFileInfo, QPoint, QSettings,
-        QSaveFile, QSize, QTextStream, Qt)
+        QSaveFile, QSize, QTextStream, Qt, Slot)
 from PySide6.QtGui import QAction, QIcon, QKeySequence
 from PySide6.QtWidgets import (QApplication, QFileDialog, QMainWindow,
         QMdiArea, QMessageBox, QTextEdit, QWidget)
@@ -156,11 +156,13 @@ class MainWindow(QMainWindow):
             self.write_settings()
             event.accept()
 
+    @Slot()
     def new_file(self):
         child = self.create_mdi_child()
         child.new_file()
         child.show()
 
+    @Slot()
     def open(self):
         file_name, _ = QFileDialog.getOpenFileName(self)
         if file_name:
@@ -178,31 +180,38 @@ class MainWindow(QMainWindow):
         else:
             child.close()
 
+    @Slot()
     def save(self):
         if self.active_mdi_child() and self.active_mdi_child().save():
             self.statusBar().showMessage("File saved", 2000)
 
+    @Slot()
     def save_as(self):
         if self.active_mdi_child() and self.active_mdi_child().save_as():
             self.statusBar().showMessage("File saved", 2000)
 
+    @Slot()
     def cut(self):
         if self.active_mdi_child():
             self.active_mdi_child().cut()
 
+    @Slot()
     def copy(self):
         if self.active_mdi_child():
             self.active_mdi_child().copy()
 
+    @Slot()
     def paste(self):
         if self.active_mdi_child():
             self.active_mdi_child().paste()
 
+    @Slot()
     def about(self):
         QMessageBox.about(self, "About MDI",
                 "The <b>MDI</b> example demonstrates how to write multiple "
                 "document interface applications using Qt.")
 
+    @Slot()
     def update_menus(self):
         has_mdi_child = (self.active_mdi_child() is not None)
         self._save_act.setEnabled(has_mdi_child)
@@ -221,6 +230,7 @@ class MainWindow(QMainWindow):
         self._cut_act.setEnabled(has_selection)
         self._copy_act.setEnabled(has_selection)
 
+    @Slot()
     def update_window_menu(self):
         self._window_menu.clear()
         self._window_menu.addAction(self._close_act)
@@ -402,6 +412,7 @@ class MainWindow(QMainWindow):
                 return window
         return None
 
+    @Slot()
     def switch_layout_direction(self):
         if self.layoutDirection() == Qt.LeftToRight:
             QApplication.setLayoutDirection(Qt.RightToLeft)
diff --git a/examples/widgets/richtext/orderform/orderform.py b/examples/widgets/richtext/orderform/orderform.py
index 9f16c40a2..15bb26cc2 100644
--- a/examples/widgets/richtext/orderform/orderform.py
+++ b/examples/widgets/richtext/orderform/orderform.py
@@ -156,6 +156,7 @@ class MainWindow(QMainWindow):
                 '12 High Street\nSmall Town\nThis country',
                 dialog.order_items(), True)
 
+    @Slot()
     def open_dialog(self):
         dialog = DetailsDialog("Enter Customer Details", self)
 
@@ -163,6 +164,7 @@ class MainWindow(QMainWindow):
             self.create_letter(dialog.sender_name(), dialog.sender_address(),
                     dialog.order_items(), dialog.send_offers())
 
+    @Slot()
     def print_file(self):
         editor = self.letters.currentWidget()
         printer = QPrinter()
@@ -241,6 +243,7 @@ class DetailsDialog(QDialog):
     def send_offers(self):
         return self._offers_check_box.isChecked()
 
+    @Slot()
     def verify(self):
         if self._name_edit.text() and self._address_edit.toPlainText():
             self.accept()
diff --git a/examples/widgets/richtext/textobject/textobject.py b/examples/widgets/richtext/textobject/textobject.py
index 3bc5f4bd2..cfd065e22 100644
--- a/examples/widgets/richtext/textobject/textobject.py
+++ b/examples/widgets/richtext/textobject/textobject.py
@@ -8,7 +8,7 @@ import os
 from pathlib import Path
 import sys
 
-from PySide6.QtCore import QFile, QIODevice, QObject, QSizeF, Qt
+from PySide6.QtCore import QFile, QIODevice, QObject, QSizeF, Qt, Slot
 from PySide6.QtGui import (QTextCharFormat, QTextFormat, QTextObjectInterface,
                            QPyTextObject)
 from PySide6.QtWidgets import (QApplication, QHBoxLayout, QLabel, QLineEdit,
@@ -51,6 +51,7 @@ class Window(QWidget):
 
         self.setWindowTitle(self.tr("Text Object Example"))
 
+    @Slot()
     def insert_text_object(self):
         file_name = self._file_name_line_edit.text()
         file = QFile(file_name)
diff --git a/examples/widgets/tetrix/tetrix.py b/examples/widgets/tetrix/tetrix.py
index 49fd7c4ff..391ea0a2a 100644
--- a/examples/widgets/tetrix/tetrix.py
+++ b/examples/widgets/tetrix/tetrix.py
@@ -140,6 +140,7 @@ class TetrixBoard(QFrame):
         return QSize(TetrixBoard.board_width * 5 + self.frameWidth() * 2,
                 TetrixBoard.board_height * 5 + self.frameWidth() * 2)
 
+    @Slot()
     def start(self):
         if self._is_paused:
             return
@@ -159,6 +160,7 @@ class TetrixBoard(QFrame):
         self.new_piece()
         self.timer.start(self.timeout_time(), self)
 
+    @Slot()
     def pause(self):
         if not self._is_started:
             return
diff --git a/examples/widgets/tools/regularexpression/regularexpressiondialog.py b/examples/widgets/tools/regularexpression/regularexpressiondialog.py
index 9ebf8a65d..ab8d12c15 100644
--- a/examples/widgets/tools/regularexpression/regularexpressiondialog.py
+++ b/examples/widgets/tools/regularexpression/regularexpressiondialog.py
@@ -76,6 +76,7 @@ class PatternLineEdit(QLineEdit):
         self.copyToCodeAction.triggered.connect(self.copyToCode)
         self.pasteFromCodeAction.triggered.connect(self.pasteFromCode)
 
+    @Slot()
     def escapeSelection(self):
         selection = self.selectedText()
         selection_start = self.selectionStart()
@@ -89,9 +90,11 @@ class PatternLineEdit(QLineEdit):
             )
             self.setText(t)
 
+    @Slot()
     def copyToCode(self):
         QGuiApplication.clipboard().setText(patternToCode(self.text()))
 
+    @Slot()
     def pasteFromCode(self):
         self.setText(codeToPattern(QGuiApplication.clipboard().text()))
 
@@ -165,6 +168,7 @@ class RegularExpressionDialog(QDialog):
         self.palette.setColor(QPalette.Text, color)
         widget.setPalette(self.palette)
 
+    @Slot()
     def refresh(self):
         self.setUpdatesEnabled(False)
         self.pattern = self.patternLineEdit.text()
diff --git a/examples/widgets/tutorials/addressbook/part3.py b/examples/widgets/tutorials/addressbook/part3.py
index 5365c1ae0..af5babc9b 100644
--- a/examples/widgets/tutorials/addressbook/part3.py
+++ b/examples/widgets/tutorials/addressbook/part3.py
@@ -110,6 +110,7 @@ class AddressBook(QWidget):
         self._submit_button.show()
         self._cancel_button.show()
 
+    @Slot()
     def submit_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -143,6 +144,7 @@ class AddressBook(QWidget):
         self._submit_button.hide()
         self._cancel_button.hide()
 
+    @Slot()
     def cancel(self):
         self._name_line.setText(self._old_name)
         self._address_text.setText(self._old_address)
@@ -162,6 +164,7 @@ class AddressBook(QWidget):
         self._submit_button.hide()
         self._cancel_button.hide()
 
+    @Slot()
     def next(self):
         name = self._name_line.text()
         it = iter(self.contacts)
@@ -179,6 +182,7 @@ class AddressBook(QWidget):
         self._name_line.setText(next_name)
         self._address_text.setText(next_address)
 
+    @Slot()
     def previous(self):
         name = self._name_line.text()
 
diff --git a/examples/widgets/tutorials/addressbook/part4.py b/examples/widgets/tutorials/addressbook/part4.py
index 0b1edb054..11d65ab3c 100644
--- a/examples/widgets/tutorials/addressbook/part4.py
+++ b/examples/widgets/tutorials/addressbook/part4.py
@@ -105,6 +105,7 @@ class AddressBook(QWidget):
         self.setLayout(main_layout)
         self.setWindowTitle("Simple Address Book")
 
+    @Slot()
     def add_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
@@ -114,12 +115,14 @@ class AddressBook(QWidget):
 
         self.update_interface(self.AddingMode)
 
+    @Slot()
     def edit_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
 
         self.update_interface(self.EditingMode)
 
+    @Slot()
     def submit_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -157,11 +160,13 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def cancel(self):
         self._name_line.setText(self._old_name)
         self._address_text.setText(self._old_address)
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def remove_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -180,6 +185,7 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def next(self):
         name = self._name_line.text()
         it = iter(self.contacts)
@@ -197,6 +203,7 @@ class AddressBook(QWidget):
         self._name_line.setText(next_name)
         self._address_text.setText(next_address)
 
+    @Slot()
     def previous(self):
         name = self._name_line.text()
 
diff --git a/examples/widgets/tutorials/addressbook/part5.py b/examples/widgets/tutorials/addressbook/part5.py
index 48404c95d..41e725ce1 100644
--- a/examples/widgets/tutorials/addressbook/part5.py
+++ b/examples/widgets/tutorials/addressbook/part5.py
@@ -112,6 +112,7 @@ class AddressBook(QWidget):
         self.setLayout(main_layout)
         self.setWindowTitle("Simple Address Book")
 
+    @Slot()
     def add_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
@@ -121,12 +122,14 @@ class AddressBook(QWidget):
 
         self.update_interface(self.AddingMode)
 
+    @Slot()
     def edit_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
 
         self.update_interface(self.EditingMode)
 
+    @Slot()
     def submit_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -164,11 +167,13 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def cancel(self):
         self._name_line.setText(self._old_name)
         self._address_text.setText(self._old_address)
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def remove_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -187,6 +192,7 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def next(self):
         name = self._name_line.text()
         it = iter(self.contacts)
@@ -204,6 +210,7 @@ class AddressBook(QWidget):
         self._name_line.setText(next_name)
         self._address_text.setText(next_address)
 
+    @Slot()
     def previous(self):
         name = self._name_line.text()
 
diff --git a/examples/widgets/tutorials/addressbook/part6.py b/examples/widgets/tutorials/addressbook/part6.py
index 9070a34da..095c67175 100644
--- a/examples/widgets/tutorials/addressbook/part6.py
+++ b/examples/widgets/tutorials/addressbook/part6.py
@@ -122,6 +122,7 @@ class AddressBook(QWidget):
         self.setLayout(main_layout)
         self.setWindowTitle("Simple Address Book")
 
+    @Slot()
     def add_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
@@ -131,12 +132,14 @@ class AddressBook(QWidget):
 
         self.update_interface(self.AddingMode)
 
+    @Slot()
     def edit_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
 
         self.update_interface(self.EditingMode)
 
+    @Slot()
     def submit_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -174,11 +177,13 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def cancel(self):
         self._name_line.setText(self._old_name)
         self._address_text.setText(self._old_address)
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def remove_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -197,6 +202,7 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def next(self):
         name = self._name_line.text()
         it = iter(self.contacts)
@@ -214,6 +220,7 @@ class AddressBook(QWidget):
         self._name_line.setText(next_name)
         self._address_text.setText(next_address)
 
+    @Slot()
     def previous(self):
         name = self._name_line.text()
 
diff --git a/examples/widgets/tutorials/addressbook/part7.py b/examples/widgets/tutorials/addressbook/part7.py
index 2fc7a8d1c..9addc32e0 100644
--- a/examples/widgets/tutorials/addressbook/part7.py
+++ b/examples/widgets/tutorials/addressbook/part7.py
@@ -128,6 +128,7 @@ class AddressBook(QWidget):
         self.setLayout(main_layout)
         self.setWindowTitle("Simple Address Book")
 
+    @Slot()
     def add_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
@@ -137,12 +138,14 @@ class AddressBook(QWidget):
 
         self.update_interface(self.AddingMode)
 
+    @Slot()
     def edit_contact(self):
         self._old_name = self._name_line.text()
         self._old_address = self._address_text.toPlainText()
 
         self.update_interface(self.EditingMode)
 
+    @Slot()
     def submit_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -180,11 +183,13 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def cancel(self):
         self._name_line.setText(self._old_name)
         self._address_text.setText(self._old_address)
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def remove_contact(self):
         name = self._name_line.text()
         address = self._address_text.toPlainText()
@@ -203,6 +208,7 @@ class AddressBook(QWidget):
 
         self.update_interface(self.NavigationMode)
 
+    @Slot()
     def next(self):
         name = self._name_line.text()
         it = iter(self.contacts)
@@ -220,6 +226,7 @@ class AddressBook(QWidget):
         self._name_line.setText(next_name)
         self._address_text.setText(next_address)
 
+    @Slot()
     def previous(self):
         name = self._name_line.text()
 
diff --git a/examples/widgets/widgetsgallery/widgetgallery.py b/examples/widgets/widgetsgallery/widgetgallery.py
index d96241106..72cac1c8f 100644
--- a/examples/widgets/widgetsgallery/widgetgallery.py
+++ b/examples/widgets/widgetsgallery/widgetgallery.py
@@ -8,7 +8,7 @@ from PySide6.QtGui import (QCursor, QDesktopServices, QGuiApplication, QIcon,
                            QKeySequence, QShortcut, QStandardItem,
                            QStandardItemModel, QScreen, QWindow)
 from PySide6.QtCore import (QDateTime, QDir, QLibraryInfo, QMetaObject,
-                            QSysInfo, QTextStream, QTimer, Qt, qVersion)
+                            QSysInfo, QTextStream, QTimer, Qt, qVersion, Slot)
 
 
 POEM = """Twinkle, twinkle, little star,
@@ -180,9 +180,11 @@ class WidgetGallery(QDialog):
             self.windowHandle().screenChanged.connect(self.update_systeminfo)
             self.update_systeminfo()
 
+    @Slot(str)
     def change_style(self, style_name):
         QApplication.setStyle(QStyleFactory.create(style_name))
 
+    @Slot()
     def advance_progressbar(self):
         cur_val = self._progress_bar.value()
         max_val = self._progress_bar.maximum()
@@ -379,6 +381,7 @@ class WidgetGallery(QDialog):
         timer.start(1000)
         return result
 
+    @Slot()
     def update_systeminfo(self):
         """Display system information"""
         system_info = SYSTEMINFO.format(sys.version,
@@ -387,6 +390,7 @@ class WidgetGallery(QDialog):
                                         screen_info(self))
         self._systeminfo_textbrowser.setHtml(system_info)
 
+    @Slot()
     def help_on_current_widget(self):
         """Display help on widget under mouse"""
         w = QApplication.widgetAt(QCursor.pos(self.screen()))