From 588bd92228efa7ed3a92929e0eb90c22be189e04 Mon Sep 17 00:00:00 2001
From: Christian Ehrlicher <ch.ehrlicher@gmx.de>
Date: Sun, 2 Dec 2018 14:17:21 +0100
Subject: [PATCH] Cleanup Widgets examples - parent ctor

Cleanup the Widgets examples - add missing parent parameter

Change-Id: I5cd7aa333dbb8e6e4b7b9e05c085120733da83ec
Reviewed-by: Samuel Gaist <samuel.gaist@idiap.ch>
Reviewed-by: Konstantin Shegunov <kshegunov@gmail.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
---
 examples/widgets/widgets/calendarwidget/window.cpp        | 3 ++-
 examples/widgets/widgets/calendarwidget/window.h          | 2 +-
 examples/widgets/widgets/charactermap/mainwindow.cpp      | 3 ++-
 examples/widgets/widgets/charactermap/mainwindow.h        | 2 +-
 examples/widgets/widgets/icons/mainwindow.cpp             | 3 ++-
 examples/widgets/widgets/icons/mainwindow.h               | 2 +-
 examples/widgets/widgets/imageviewer/imageviewer.cpp      | 7 +++----
 examples/widgets/widgets/imageviewer/imageviewer.h        | 2 +-
 examples/widgets/widgets/lineedits/window.cpp             | 3 ++-
 examples/widgets/widgets/lineedits/window.h               | 2 +-
 examples/widgets/widgets/mousebuttons/buttontester.h      | 5 +++--
 examples/widgets/widgets/scribble/mainwindow.cpp          | 4 ++--
 examples/widgets/widgets/scribble/mainwindow.h            | 2 +-
 examples/widgets/widgets/sliders/window.cpp               | 3 ++-
 examples/widgets/widgets/sliders/window.h                 | 2 +-
 examples/widgets/widgets/spinboxes/window.cpp             | 3 ++-
 examples/widgets/widgets/spinboxes/window.h               | 2 +-
 examples/widgets/widgets/stylesheet/mainwindow.cpp        | 3 ++-
 examples/widgets/widgets/stylesheet/mainwindow.h          | 2 +-
 examples/widgets/widgets/tetrix/tetrixwindow.cpp          | 3 ++-
 examples/widgets/widgets/tetrix/tetrixwindow.h            | 2 +-
 examples/widgets/widgets/tooltips/sortingbox.cpp          | 3 ++-
 examples/widgets/widgets/tooltips/sortingbox.h            | 2 +-
 examples/widgets/widgets/windowflags/controllerwindow.cpp | 3 ++-
 examples/widgets/widgets/windowflags/controllerwindow.h   | 2 +-
 25 files changed, 40 insertions(+), 30 deletions(-)

diff --git a/examples/widgets/widgets/calendarwidget/window.cpp b/examples/widgets/widgets/calendarwidget/window.cpp
index c3a0e1e3f7c..a1c17467868 100644
--- a/examples/widgets/widgets/calendarwidget/window.cpp
+++ b/examples/widgets/widgets/calendarwidget/window.cpp
@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     createPreviewGroupBox();
     createGeneralOptionsGroupBox();
diff --git a/examples/widgets/widgets/calendarwidget/window.h b/examples/widgets/widgets/calendarwidget/window.h
index fa01fc4db6c..83ea494fc2e 100644
--- a/examples/widgets/widgets/calendarwidget/window.h
+++ b/examples/widgets/widgets/calendarwidget/window.h
@@ -70,7 +70,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 private slots:
     void localeChanged(int index);
diff --git a/examples/widgets/widgets/charactermap/mainwindow.cpp b/examples/widgets/widgets/charactermap/mainwindow.cpp
index d3ac55483cb..76bd8f7799b 100644
--- a/examples/widgets/widgets/charactermap/mainwindow.cpp
+++ b/examples/widgets/widgets/charactermap/mainwindow.cpp
@@ -57,7 +57,8 @@
 
 Q_DECLARE_METATYPE(QFontComboBox::FontFilter)
 
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     QMenu *fileMenu = menuBar()->addMenu(tr("File"));
     fileMenu->addAction(tr("Quit"), this, &QWidget::close);
diff --git a/examples/widgets/widgets/charactermap/mainwindow.h b/examples/widgets/widgets/charactermap/mainwindow.h
index eac16b35fae..79fe9f9cc84 100644
--- a/examples/widgets/widgets/charactermap/mainwindow.h
+++ b/examples/widgets/widgets/charactermap/mainwindow.h
@@ -70,7 +70,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void filterChanged(int);
diff --git a/examples/widgets/widgets/icons/mainwindow.cpp b/examples/widgets/widgets/icons/mainwindow.cpp
index f704b8306f9..904245494ce 100644
--- a/examples/widgets/widgets/icons/mainwindow.cpp
+++ b/examples/widgets/widgets/icons/mainwindow.cpp
@@ -60,7 +60,8 @@ enum { OtherSize = QStyle::PM_CustomBase };
 //! [40]
 
 //! [0]
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     QWidget *centralWidget = new QWidget(this);
     setCentralWidget(centralWidget);
diff --git a/examples/widgets/widgets/icons/mainwindow.h b/examples/widgets/widgets/icons/mainwindow.h
index e3888e5fb1c..1949bd235c0 100644
--- a/examples/widgets/widgets/icons/mainwindow.h
+++ b/examples/widgets/widgets/icons/mainwindow.h
@@ -74,7 +74,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
     void loadImages(const QStringList &fileNames);
 
diff --git a/examples/widgets/widgets/imageviewer/imageviewer.cpp b/examples/widgets/widgets/imageviewer/imageviewer.cpp
index 327abf7e43d..b1346d9ccbf 100644
--- a/examples/widgets/widgets/imageviewer/imageviewer.cpp
+++ b/examples/widgets/widgets/imageviewer/imageviewer.cpp
@@ -59,10 +59,9 @@
 #include "imageviewer.h"
 
 //! [0]
-ImageViewer::ImageViewer()
-   : imageLabel(new QLabel)
-   , scrollArea(new QScrollArea)
-   , scaleFactor(1)
+ImageViewer::ImageViewer(QWidget *parent)
+   : QMainWindow(parent), imageLabel(new QLabel),
+     scrollArea(new QScrollArea), scaleFactor(1)
 {
     imageLabel->setBackgroundRole(QPalette::Base);
     imageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
diff --git a/examples/widgets/widgets/imageviewer/imageviewer.h b/examples/widgets/widgets/imageviewer/imageviewer.h
index f4a62cafe98..7e53105b33b 100644
--- a/examples/widgets/widgets/imageviewer/imageviewer.h
+++ b/examples/widgets/widgets/imageviewer/imageviewer.h
@@ -71,7 +71,7 @@ class ImageViewer : public QMainWindow
     Q_OBJECT
 
 public:
-    ImageViewer();
+    ImageViewer(QWidget *parent = nullptr);
     bool loadFile(const QString &);
 
 private slots:
diff --git a/examples/widgets/widgets/lineedits/window.cpp b/examples/widgets/widgets/lineedits/window.cpp
index ffb1edc5cec..47324589b73 100644
--- a/examples/widgets/widgets/lineedits/window.cpp
+++ b/examples/widgets/widgets/lineedits/window.cpp
@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     QGroupBox *echoGroup = new QGroupBox(tr("Echo"));
 
diff --git a/examples/widgets/widgets/lineedits/window.h b/examples/widgets/widgets/lineedits/window.h
index 2070b3b84ca..3231588f4f2 100644
--- a/examples/widgets/widgets/lineedits/window.h
+++ b/examples/widgets/widgets/lineedits/window.h
@@ -64,7 +64,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 public slots:
     void echoChanged(int);
diff --git a/examples/widgets/widgets/mousebuttons/buttontester.h b/examples/widgets/widgets/mousebuttons/buttontester.h
index d99dcceb188..231733bd442 100644
--- a/examples/widgets/widgets/mousebuttons/buttontester.h
+++ b/examples/widgets/widgets/mousebuttons/buttontester.h
@@ -59,13 +59,14 @@
 class ButtonTester : public QTextEdit
 {
     Q_OBJECT
-
+public:
+    using QTextEdit::QTextEdit;
 protected:
     void    mousePressEvent(QMouseEvent *event) override;
     void    mouseReleaseEvent(QMouseEvent *event) override;
     void    mouseDoubleClickEvent(QMouseEvent *event) override;
 #if QT_CONFIG(wheelevent)
-    void    wheelEvent(QWheelEvent * event) override;
+    void    wheelEvent(QWheelEvent *event) override;
 #endif
     int     buttonByNumber(const Qt::MouseButton button);
     QString enumNameFromValue(const Qt::MouseButton button);
diff --git a/examples/widgets/widgets/scribble/mainwindow.cpp b/examples/widgets/widgets/scribble/mainwindow.cpp
index d54e5ce0f9b..b8d01d505c2 100644
--- a/examples/widgets/widgets/scribble/mainwindow.cpp
+++ b/examples/widgets/widgets/scribble/mainwindow.cpp
@@ -54,9 +54,9 @@
 #include "scribblearea.h"
 
 //! [0]
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent), scribbleArea(new ScribbleArea(this))
 {
-    scribbleArea = new ScribbleArea;
     setCentralWidget(scribbleArea);
 
     createActions();
diff --git a/examples/widgets/widgets/scribble/mainwindow.h b/examples/widgets/widgets/scribble/mainwindow.h
index 9e0ddaff716..e57ff065aca 100644
--- a/examples/widgets/widgets/scribble/mainwindow.h
+++ b/examples/widgets/widgets/scribble/mainwindow.h
@@ -62,7 +62,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 protected:
     void closeEvent(QCloseEvent *event) override;
diff --git a/examples/widgets/widgets/sliders/window.cpp b/examples/widgets/widgets/sliders/window.cpp
index 16b60dde499..16467e71be4 100644
--- a/examples/widgets/widgets/sliders/window.cpp
+++ b/examples/widgets/widgets/sliders/window.cpp
@@ -54,7 +54,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     horizontalSliders = new SlidersGroup(Qt::Horizontal, tr("Horizontal"));
     verticalSliders = new SlidersGroup(Qt::Vertical, tr("Vertical"));
diff --git a/examples/widgets/widgets/sliders/window.h b/examples/widgets/widgets/sliders/window.h
index 9c4c14fa370..4894781ac2f 100644
--- a/examples/widgets/widgets/sliders/window.h
+++ b/examples/widgets/widgets/sliders/window.h
@@ -69,7 +69,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 private:
     void createControls(const QString &title);
diff --git a/examples/widgets/widgets/spinboxes/window.cpp b/examples/widgets/widgets/spinboxes/window.cpp
index 54604e35aa9..eb660faace4 100644
--- a/examples/widgets/widgets/spinboxes/window.cpp
+++ b/examples/widgets/widgets/spinboxes/window.cpp
@@ -53,7 +53,8 @@
 #include "window.h"
 
 //! [0]
-Window::Window()
+Window::Window(QWidget *parent)
+    : QWidget(parent)
 {
     createSpinBoxes();
     createDateTimeEdits();
diff --git a/examples/widgets/widgets/spinboxes/window.h b/examples/widgets/widgets/spinboxes/window.h
index 97e9ac10835..138773a5aaa 100644
--- a/examples/widgets/widgets/spinboxes/window.h
+++ b/examples/widgets/widgets/spinboxes/window.h
@@ -67,7 +67,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window();
+    Window(QWidget *parent = nullptr);
 
 public slots:
     void changePrecision(int decimals);
diff --git a/examples/widgets/widgets/stylesheet/mainwindow.cpp b/examples/widgets/widgets/stylesheet/mainwindow.cpp
index 9acd90658a8..eb4b3a2424b 100644
--- a/examples/widgets/widgets/stylesheet/mainwindow.cpp
+++ b/examples/widgets/widgets/stylesheet/mainwindow.cpp
@@ -53,7 +53,8 @@
 #include "mainwindow.h"
 #include "stylesheeteditor.h"
 
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     ui.setupUi(this);
 
diff --git a/examples/widgets/widgets/stylesheet/mainwindow.h b/examples/widgets/widgets/stylesheet/mainwindow.h
index 46d3ecbb932..8af4c01da0b 100644
--- a/examples/widgets/widgets/stylesheet/mainwindow.h
+++ b/examples/widgets/widgets/stylesheet/mainwindow.h
@@ -62,7 +62,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
 private slots:
     void on_editStyleAction_triggered();
diff --git a/examples/widgets/widgets/tetrix/tetrixwindow.cpp b/examples/widgets/widgets/tetrix/tetrixwindow.cpp
index 7e951aceb83..970a38c1dc3 100644
--- a/examples/widgets/widgets/tetrix/tetrixwindow.cpp
+++ b/examples/widgets/widgets/tetrix/tetrixwindow.cpp
@@ -54,7 +54,8 @@
 #include "tetrixwindow.h"
 
 //! [0]
-TetrixWindow::TetrixWindow()
+TetrixWindow::TetrixWindow(QWidget *parent)
+    : QWidget(parent)
 {
     board = new TetrixBoard;
 //! [0]
diff --git a/examples/widgets/widgets/tetrix/tetrixwindow.h b/examples/widgets/widgets/tetrix/tetrixwindow.h
index a21cef2ecf3..02226ffe1c5 100644
--- a/examples/widgets/widgets/tetrix/tetrixwindow.h
+++ b/examples/widgets/widgets/tetrix/tetrixwindow.h
@@ -67,7 +67,7 @@ class TetrixWindow : public QWidget
     Q_OBJECT
 
 public:
-    TetrixWindow();
+    TetrixWindow(QWidget *parent = nullptr);
 
 private:
     QLabel *createLabel(const QString &text);
diff --git a/examples/widgets/widgets/tooltips/sortingbox.cpp b/examples/widgets/widgets/tooltips/sortingbox.cpp
index 4769a30c64a..766815e8e95 100644
--- a/examples/widgets/widgets/tooltips/sortingbox.cpp
+++ b/examples/widgets/widgets/tooltips/sortingbox.cpp
@@ -55,7 +55,8 @@
 #include "sortingbox.h"
 
 //! [0]
-SortingBox::SortingBox()
+SortingBox::SortingBox(QWidget *parent)
+    : QWidget(parent)
 {
 //! [0] //! [1]
     setMouseTracking(true);
diff --git a/examples/widgets/widgets/tooltips/sortingbox.h b/examples/widgets/widgets/tooltips/sortingbox.h
index 2ac27614a53..12bdeff1f65 100644
--- a/examples/widgets/widgets/tooltips/sortingbox.h
+++ b/examples/widgets/widgets/tooltips/sortingbox.h
@@ -67,7 +67,7 @@ class SortingBox : public QWidget
     Q_OBJECT
 
 public:
-    SortingBox();
+    SortingBox(QWidget *parent = nullptr);
 
 protected:
     bool event(QEvent *event) override;
diff --git a/examples/widgets/widgets/windowflags/controllerwindow.cpp b/examples/widgets/widgets/windowflags/controllerwindow.cpp
index 78323810ed4..c19f23c5139 100644
--- a/examples/widgets/widgets/windowflags/controllerwindow.cpp
+++ b/examples/widgets/widgets/windowflags/controllerwindow.cpp
@@ -53,7 +53,8 @@
 #include "controllerwindow.h"
 
 //! [0]
-ControllerWindow::ControllerWindow()
+ControllerWindow::ControllerWindow(QWidget *parent)
+    : QWidget(parent)
 {
     previewWindow = new PreviewWindow(this);
 
diff --git a/examples/widgets/widgets/windowflags/controllerwindow.h b/examples/widgets/widgets/windowflags/controllerwindow.h
index cfb88ed20f9..43ec67e27f2 100644
--- a/examples/widgets/widgets/windowflags/controllerwindow.h
+++ b/examples/widgets/widgets/windowflags/controllerwindow.h
@@ -69,7 +69,7 @@ class ControllerWindow : public QWidget
     Q_OBJECT
 
 public:
-    ControllerWindow();
+    ControllerWindow(QWidget *parent = nullptr);
 
 private slots:
     void updatePreview();