8 files changed, 23 insertions, 21 deletions
diff --git a/examples/widgets/animation/easing/window.cpp b/examples/widgets/animation/easing/window.cpp
index d1d6348361..378af07535 100644
--- a/examples/widgets/animation/easing/window.cpp
+++ b/examples/widgets/animation/easing/window.cpp
@@ -67,7 +67,7 @@ Window::Window(QWidget *parent)
 
     connect(m_ui.easingCurvePicker, &QListWidget::currentRowChanged,
             this, &Window::curveChanged);
-    connect(m_ui.buttonGroup, QOverload<int>::of(&QButtonGroup::buttonClicked),
+    connect(m_ui.buttonGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
             this, &Window::pathChanged);
     connect(m_ui.periodSpinBox, QOverload<double>::of(&QDoubleSpinBox::valueChanged),
             this, &Window::periodChanged);
@@ -180,9 +180,10 @@ void Window::curveChanged(int row)
     m_ui.overshootSpinBox->setEnabled(curveType >= QEasingCurve::InBack && curveType <= QEasingCurve::OutInBack);
 }
 
-void Window::pathChanged(int index)
+void Window::pathChanged(QAbstractButton *button)
 {
-    m_anim->setPathType((Animation::PathType)index);
+    const int index = m_ui.buttonGroup->id(button);
+    m_anim->setPathType(Animation::PathType(index));
 }
 
 void Window::periodChanged(double value)
diff --git a/examples/widgets/animation/easing/window.h b/examples/widgets/animation/easing/window.h
index 541377a981..0c49dd6e8a 100644
--- a/examples/widgets/animation/easing/window.h
+++ b/examples/widgets/animation/easing/window.h
@@ -69,7 +69,7 @@ public:
     Window(QWidget *parent = nullptr);
 private slots:
     void curveChanged(int row);
-    void pathChanged(int index);
+    void pathChanged(QAbstractButton *button);
     void periodChanged(double);
     void amplitudeChanged(double);
     void overshootChanged(double);
diff --git a/examples/widgets/graphicsview/chip/view.cpp b/examples/widgets/graphicsview/chip/view.cpp
index 77a6310778..f24cb738a3 100644
--- a/examples/widgets/graphicsview/chip/view.cpp
+++ b/examples/widgets/graphicsview/chip/view.cpp
@@ -220,11 +220,11 @@ void View::setupMatrix()
 {
     qreal scale = qPow(qreal(2), (zoomSlider->value() - 250) / qreal(50));
 
-    QMatrix matrix;
+    QTransform matrix;
     matrix.scale(scale, scale);
     matrix.rotate(rotateSlider->value());
 
-    graphicsView->setMatrix(matrix);
+    graphicsView->setTransform(matrix);
     setResetButtonEnabled();
 }
 
diff --git a/examples/widgets/graphicsview/diagramscene/mainwindow.cpp b/examples/widgets/graphicsview/diagramscene/mainwindow.cpp
index 3327d4d5df..58b959dd10 100644
--- a/examples/widgets/graphicsview/diagramscene/mainwindow.cpp
+++ b/examples/widgets/graphicsview/diagramscene/mainwindow.cpp
@@ -113,13 +113,14 @@ void MainWindow::backgroundButtonGroupClicked(QAbstractButton *button)
 //! [1]
 
 //! [2]
-void MainWindow::buttonGroupClicked(int id)
+void MainWindow::buttonGroupClicked(QAbstractButton *button)
 {
     const QList<QAbstractButton *> buttons = buttonGroup->buttons();
-    for (QAbstractButton *button : buttons) {
-        if (buttonGroup->button(id) != button)
+    for (QAbstractButton *myButton : buttons) {
+        if (myButton != button)
             button->setChecked(false);
     }
+    const int id = buttonGroup->id(button);
     if (id == InsertTextButton) {
         scene->setMode(DiagramScene::InsertText);
     } else {
@@ -154,7 +155,7 @@ void MainWindow::deleteItem()
 //! [3]
 
 //! [4]
-void MainWindow::pointerGroupClicked(int)
+void MainWindow::pointerGroupClicked()
 {
     scene->setMode(DiagramScene::Mode(pointerTypeGroup->checkedId()));
 }
@@ -231,8 +232,8 @@ void MainWindow::fontSizeChanged(const QString &)
 void MainWindow::sceneScaleChanged(const QString &scale)
 {
     double newScale = scale.left(scale.indexOf(tr("%"))).toDouble() / 100.0;
-    QMatrix oldMatrix = view->matrix();
-    view->resetMatrix();
+    QTransform oldMatrix = view->transform();
+    view->resetTransform();
     view->translate(oldMatrix.dx(), oldMatrix.dy());
     view->scale(newScale, newScale);
 }
@@ -334,7 +335,7 @@ void MainWindow::createToolBox()
 {
     buttonGroup = new QButtonGroup(this);
     buttonGroup->setExclusive(false);
-    connect(buttonGroup, QOverload<int>::of(&QButtonGroup::buttonClicked),
+    connect(buttonGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
             this, &MainWindow::buttonGroupClicked);
     QGridLayout *layout = new QGridLayout;
     layout->addWidget(createCellWidget(tr("Conditional"), DiagramItem::Conditional), 0, 0);
@@ -528,7 +529,7 @@ void MainWindow::createToolbars()
     pointerTypeGroup = new QButtonGroup(this);
     pointerTypeGroup->addButton(pointerButton, int(DiagramScene::MoveItem));
     pointerTypeGroup->addButton(linePointerButton, int(DiagramScene::InsertLine));
-    connect(pointerTypeGroup, QOverload<int>::of(&QButtonGroup::buttonClicked),
+    connect(pointerTypeGroup, QOverload<QAbstractButton *>::of(&QButtonGroup::buttonClicked),
             this, &MainWindow::pointerGroupClicked);
 
     sceneScaleCombo = new QComboBox;
diff --git a/examples/widgets/graphicsview/diagramscene/mainwindow.h b/examples/widgets/graphicsview/diagramscene/mainwindow.h
index e04224fbc7..9fcd1884ca 100644
--- a/examples/widgets/graphicsview/diagramscene/mainwindow.h
+++ b/examples/widgets/graphicsview/diagramscene/mainwindow.h
@@ -82,9 +82,9 @@ public:
 
 private slots:
     void backgroundButtonGroupClicked(QAbstractButton *button);
-    void buttonGroupClicked(int id);
+    void buttonGroupClicked(QAbstractButton *button);
     void deleteItem();
-    void pointerGroupClicked(int id);
+    void pointerGroupClicked();
     void bringToFront();
     void sendToBack();
     void itemInserted(DiagramItem *item);
diff --git a/examples/widgets/painting/affine/xform.cpp b/examples/widgets/painting/affine/xform.cpp
index 50acf0f814..4e7cb91ce1 100644
--- a/examples/widgets/painting/affine/xform.cpp
+++ b/examples/widgets/painting/affine/xform.cpp
@@ -223,7 +223,7 @@ void XFormView::setRotation(qreal r)
     m_rotation = r;
 
     QPointF center(pts->points().at(0));
-    QMatrix m;
+    QTransform m;
     m.translate(center.x(), center.y());
     m.rotate(m_rotation - old_rot);
     m.translate(-center.x(), -center.y());
@@ -236,7 +236,7 @@ void XFormView::timerEvent(QTimerEvent *e)
 {
     if (e->timerId() == timer.timerId()) {
         QPointF center(pts->points().at(0));
-        QMatrix m;
+        QTransform m;
         m.translate(center.x(), center.y());
         m.rotate(0.2);
         m.translate(-center.x(), -center.y());
diff --git a/examples/widgets/painting/deform/pathdeform.cpp b/examples/widgets/painting/deform/pathdeform.cpp
index d5c8746247..961d5e5e99 100644
--- a/examples/widgets/painting/deform/pathdeform.cpp
+++ b/examples/widgets/painting/deform/pathdeform.cpp
@@ -374,7 +374,7 @@ void PathDeformRenderer::setText(const QString &text)
     }
 
     for (int i=0; i<m_paths.size(); ++i)
-        m_paths[i] = m_paths[i] * QMatrix(1, 0, 0, 1, -m_pathBounds.x(), -m_pathBounds.y());
+        m_paths[i] = m_paths[i] * QTransform(1, 0, 0, 1, -m_pathBounds.x(), -m_pathBounds.y());
 
     update();
 }
diff --git a/examples/widgets/painting/pathstroke/pathstroke.cpp b/examples/widgets/painting/pathstroke/pathstroke.cpp
index a850ce2672..7dab6f95a2 100644
--- a/examples/widgets/painting/pathstroke/pathstroke.cpp
+++ b/examples/widgets/painting/pathstroke/pathstroke.cpp
@@ -511,10 +511,10 @@ void PathStrokeRenderer::initializePoints()
     m_points.clear();
     m_vectors.clear();
 
-    QMatrix m;
+    QTransform m;
     qreal rot = 360.0 / count;
     QPointF center(width() / 2, height() / 2);
-    QMatrix vm;
+    QTransform vm;
     vm.shear(2, -1);
     vm.scale(3, 3);