Change window close event to hide window

AdaptiveBrightness/main_window.cpp

@@ -5,6 +5,7 @@
 
 #include <cmath>
 
+#include <QCloseEvent>
 #include <QGroupBox>
 #include <QSlider>
 #include <QtDebug>
@@ -52,7 +53,7 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
             m_visibility = !m_visibility;
         });
         m_trayIconMenu->addSeparator();
-        m_trayIconMenu->addAction(tr("Quit"), this, &QWidget::close);
+        m_trayIconMenu->addAction(tr("Quit"), this, &QCoreApplication::quit);
 
         qDebug(ltr("Tray icon context menu initialized"));
 
@@ -88,6 +89,12 @@ MainWindow::~MainWindow()
     }
 }
 
+void MainWindow::closeEvent(QCloseEvent* event)
+{
+    m_showHideAction->activate(QAction::Trigger);
+    event->ignore();
+}
+
 void MainWindow::loadIcons()
 {
     qDebug(ltr("Loading icons"));

AdaptiveBrightness/main_window.hpp

@@ -25,6 +25,8 @@ class MainWindow : public QMainWindow {
     ~MainWindow();
 
   private:
+    void closeEvent(QCloseEvent* event) override;
+
     void loadIcons();
 
     void updateState();