example: Add an option to show a non-closable dock widget

Passing -n to the example will make the dock widget #0 non-closable

examples/dockwidgets/MyMainWindow.cpp

@@ -50,8 +50,9 @@ static MyWidget *newMyWidget()
 }
 
 MyMainWindow::MyMainWindow(const QString &uniqueName, KDDockWidgets::MainWindowOptions options,
-                           const QString &affinityName, QWidget *parent)
+                           bool dockWidget0IsNonClosable, const QString &affinityName, QWidget *parent)
     : MainWindow(uniqueName, options, parent)
+    , m_dockWidget0IsNonClosable(dockWidget0IsNonClosable)
 {
     // qApp->installEventFilter(this);
 
@@ -125,7 +126,13 @@ void MyMainWindow::createDockWidgets()
 KDDockWidgets::DockWidgetBase *MyMainWindow::newDockWidget()
 {
     static int count = 0;
-    auto dock = new KDDockWidgets::DockWidget(QStringLiteral("DockWidget #%1").arg(count));
+
+    // Passing options is optional, we just want to illustrate Option_NotClosable here
+    KDDockWidgets::DockWidget::Options options = KDDockWidgets::DockWidget::Option_None;
+    if (count == 0 && m_dockWidget0IsNonClosable)
+        options |= KDDockWidgets::DockWidget::Option_NotClosable;
+
+    auto dock = new KDDockWidgets::DockWidget(QStringLiteral("DockWidget #%1").arg(count), options);
     dock->setAffinityName(affinityName()); // optional, just to show the feature. Pass -mi to the example to see incompatible dock widgets
 
     if (count == 1)

examples/dockwidgets/MyMainWindow.h

@@ -27,6 +27,7 @@ class MyMainWindow : public KDDockWidgets::MainWindow
     Q_OBJECT
 public:
     explicit MyMainWindow(const QString &uniqueName, KDDockWidgets::MainWindowOptions options,
+                          bool dockWidget0IsNonClosable,
                           const QString &affinityName = {}, // Usually not needed. Just here to show the feature.
                           QWidget *parent = nullptr);
 
@@ -34,4 +35,5 @@ private:
     void createDockWidgets();
     KDDockWidgets::DockWidgetBase* newDockWidget();
     QMenu *m_toggleMenu = nullptr;
+    const bool m_dockWidget0IsNonClosable;
 };

examples/dockwidgets/main.cpp

@@ -67,6 +67,9 @@ int main(int argc, char **argv)
     QCommandLineOption tabsHaveCloseButton("c", QCoreApplication::translate("main", "Tabs have a close button"));
     parser.addOption(tabsHaveCloseButton);
 
+    QCommandLineOption nonClosableDockWidget("n", QCoreApplication::translate("main", "DockWidget #0 will be non-closable"));
+    parser.addOption(nonClosableDockWidget);
+
 #if defined(DOCKS_DEVELOPER_MODE)
     QCommandLineOption noCentralFrame("c", QCoreApplication::translate("main", "No central frame"));
     parser.addOption(noCentralFrame);
@@ -107,7 +110,9 @@ int main(int argc, char **argv)
 
     KDDockWidgets::Config::self().setFlags(flags);
 
-    MyMainWindow mainWindow(QStringLiteral("MyMainWindow"), options);
+    const bool nonClosableDockWidget0 = parser.isSet(nonClosableDockWidget);
+
+    MyMainWindow mainWindow(QStringLiteral("MyMainWindow"), options, nonClosableDockWidget0);
     mainWindow.setWindowTitle("Main Window 1");
     mainWindow.resize(1200, 1200);
     mainWindow.show();
@@ -118,7 +123,8 @@ int main(int argc, char **argv)
         const QString affinity = parser.isSet(incompatibleMainWindows) ? QStringLiteral("affinity1")
                                                                        : QString();
 
-        auto mainWindow2 = new MyMainWindow(QStringLiteral("MyMainWindow-2"), options, affinity);
+        auto mainWindow2 = new MyMainWindow(QStringLiteral("MyMainWindow-2"), options,
+                                            nonClosableDockWidget0, affinity);
         if (affinity.isEmpty())
             mainWindow2->setWindowTitle("Main Window 2");
         else