Added Preferences item in menu bar for OS X.

src/widgets/Window.cpp

@@ -29,6 +29,7 @@
 #include <QShortcut>
 #include <QVBoxLayout>
 
+#include <QMenuBar>
 #include <QStandardItemModel>
 
 namespace chatterino {
@@ -43,6 +44,10 @@ Window::Window(WindowType type)
     this->addShortcuts();
     this->addLayout();
 
+#ifdef Q_OS_MACOS
+    this->addMenuBar();
+#endif
+
     this->signalHolder_.managedConnect(
         getApp()->accounts->twitch.currentUserChanged,
         [this] { this->onAccountSelected(); });
@@ -336,6 +341,18 @@ void Window::addShortcuts()
     });
 }
 
+void Window::addMenuBar()
+{
+    QMenuBar *mainMenu = new QMenuBar();
+    mainMenu->setNativeMenuBar(true);
+
+    QMenu *menu = new QMenu(QString());
+    mainMenu->addMenu(menu);
+    QAction *prefs = menu->addAction(QString());
+    prefs->setMenuRole(QAction::PreferencesRole);
+    connect(prefs, &QAction::triggered, this, [] { SettingsDialog::showDialog(); });
+}
+
 #define UGLYMACROHACK1(s) #s
 #define UGLYMACROHACK(s) UGLYMACROHACK1(s)