2 files changed, 19 insertions, 6 deletions
diff --git a/variant/default/main-window.cpp b/variant/default/main-window.cpp
index d6df6b8f..6529db11 100644
--- a/variant/default/main-window.cpp
+++ b/variant/default/main-window.cpp
@@ -135,11 +135,11 @@ main_window::main_window() : State(OPENTRACK_BASE_PATH + OPENTRACK_LIBRARY_PATH)
 
     // timers
     connect(&config_list_timer, &QTimer::timeout, this, [this] { refresh_config_list(); });
-    connect(&pose_update_timer, SIGNAL(timeout()), this, SLOT(show_pose()), Qt::DirectConnection);
+    connect(&pose_update_timer, &QTimer::timeout, this, &main_window::show_pose, Qt::DirectConnection);
     connect(&det_timer, SIGNAL(timeout()), this, SLOT(maybe_start_profile_from_executable()));
 
     // ctrl+q exits
-    connect(&kbd_quit, SIGNAL(activated()), this, SLOT(exit()));
+    connect(&kbd_quit, &QShortcut::activated, this, [this]() { main_window::exit(EXIT_SUCCESS); }, Qt::DirectConnection);
 
     // profile menu
     {
@@ -793,11 +793,22 @@ void main_window::show_mapping_window()
 
 void main_window::exit(int status)
 {
-    QApplication::setQuitOnLastWindowClosed(true);
+    // don't use std::call_once here, leads to freeze in Microsoft's CRT
+    // this function never needs reentrancy anyway
+
+    // this is probably harmless, but better safe than sorry
+    if (exiting_already)
+        return;
+    exiting_already = true;
+
+    qDebug() << "opentrack: exiting";
+
     if (tray)
         tray->hide();
     tray = nullptr;
-    close();
+
+    //close();
+    QApplication::setQuitOnLastWindowClosed(true);
     QApplication::exit(status);
 }
 
diff --git a/variant/default/main-window.hpp b/variant/default/main-window.hpp
index 3c55be9e..55fca177 100644
--- a/variant/default/main-window.hpp
+++ b/variant/default/main-window.hpp
@@ -69,15 +69,17 @@ class main_window final : public QMainWindow, private State
             menu_action_options  { &tray_menu },
             menu_action_mappings { &tray_menu };
 
+    bool exiting_already { false };
+
     using dylib_ptr = Modules::dylib_ptr;
     using dylib_list = Modules::dylib_list;
 
-    static std::tuple<dylib_ptr, int> module_by_name(const QString& name, Modules::dylib_list& list);
-
     dylib_ptr current_tracker();
     dylib_ptr current_protocol();
     dylib_ptr current_filter();
 
+    static std::tuple<dylib_ptr, int> module_by_name(const QString& name, Modules::dylib_list& list);
+
     void update_button_state(bool running, bool inertialp);
     void display_pose(const double* mapped, const double* raw);
     void set_title(const QString& game_title = QString());