Fix signature in qt6

src/mainwindowbase.cpp

@@ -24,7 +24,11 @@ MainWindowBase::MainWindowBase(QWidget* parent, Qt::WindowFlags f)
 * keyboard focus properly between Edit Alarm Dialog windows and MessageWindow
 * windows.
 */
-void MainWindowBase::enterEvent(QEvent* e)
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+void MainWindowBase::enterEvent(QEnterEvent *e)
+#else
+void MainWindowBase::enterEvent(QEvent *e)
+#endif
 {
     if (theApp()->needWindowFocusFix())
         QApplication::setActiveWindow(this);

src/mainwindowbase.h

@@ -25,7 +25,11 @@ public:
     explicit MainWindowBase(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::Window);
 
 protected:
-    void enterEvent(QEvent*) override;
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    void enterEvent(QEnterEvent *) override;
+#else
+    void enterEvent(QEvent *) override;
+#endif
 };
 
 // vim: et sw=4: