Settings mode behaviour now identical to Win32

src/qt/qt_main.cpp

@@ -24,11 +24,15 @@ Q_IMPORT_PLUGIN(QWindowsVistaStylePlugin)
 #include <86box/win.h>
 #endif
 
+extern "C"
+{
 #include <86box/86box.h>
+#include <86box/config.h>
 #include <86box/plat.h>
 #include <86box/ui.h>
 #include <86box/video.h>
 #include <86box/discord.h>
+}
 
 #include <thread>
 #include <iostream>
@@ -36,6 +40,7 @@ Q_IMPORT_PLUGIN(QWindowsVistaStylePlugin)
 
 #include "qt_mainwindow.hpp"
 #include "qt_progsettings.hpp"
+#include "qt_settings.hpp"
 #include "cocoa_mouse.hpp"
 #include "qt_styleoverride.hpp"
 
@@ -131,6 +136,16 @@ int main(int argc, char* argv[]) {
     }
 
     discord_load();
+    if (settings_only)
+    {
+        Settings settings;
+        if (settings.exec() == QDialog::Accepted)
+        {
+            settings.save();
+            config_save();
+        }
+        return 0;
+    }
     main_window = new MainWindow();
     main_window->show();
     app.installEventFilter(main_window);
@@ -182,7 +197,6 @@ int main(int argc, char* argv[]) {
 
     /* Set the PAUSE mode depending on the renderer. */
     // plat_pause(0);
-    if (settings_only) dopause = 1;
     QTimer onesec;
     QTimer discordupdate;
     QObject::connect(&onesec, &QTimer::timeout, &app, [] {

src/qt/qt_mainwindow.cpp

@@ -442,7 +442,6 @@ void MainWindow::showEvent(QShowEvent *event) {
         scrnsz_x = window_w;
         scrnsz_y = window_h;
     }
-    if (settings_only) QTimer::singleShot(0, this, [this] () { ui->actionSettings->trigger(); });
 }
 
 void MainWindow::on_actionKeyboard_requires_capture_triggered() {
@@ -518,11 +517,6 @@ void MainWindow::on_actionSettings_triggered() {
         break;
     }
     plat_pause(currentPause);
-    if (settings_only) {
-        cpu_thread_run = 0;
-        config_save();
-        QApplication::quit();
-    }
 }
 
 std::array<uint32_t, 256> x11_to_xt_base

src/qt/qt_settings.cpp

@@ -149,7 +149,7 @@ void Settings::save() {
 
 void Settings::accept()
 {
-    if (confirm_save)
+    if (confirm_save && !settings_only)
     {
         QMessageBox questionbox(QMessageBox::Icon::Question, "86Box", QStringLiteral("%1\n\n%2").arg(tr("Do you want to save the settings?"), tr("This will hard reset the emulated machine.")), QMessageBox::Save | QMessageBox::Cancel, this);
         QCheckBox *chkbox = new QCheckBox(tr("Don't show this message again"));