diff --git a/src/qt/qt_mainwindow.cpp b/src/qt/qt_mainwindow.cpp
index c7f3b83c5..ce5ccbf16 100644
--- a/src/qt/qt_mainwindow.cpp
+++ b/src/qt/qt_mainwindow.cpp
@@ -7,6 +7,7 @@ extern "C" {
 #include <86box/keyboard.h>
 #include <86box/plat.h>
 #include <86box/video.h>
+#include <86box/vid_ega.h>
 };
 
 #include <QGuiApplication>
@@ -16,6 +17,10 @@ extern "C" {
 #include <QKeyEvent>
 #include <QMessageBox>
 #include <QFocusEvent>
+#include <QApplication>
+#include <QPushButton>
+#include <QDesktopServices>
+#include <QUrl>
 
 #include <array>
 #include <unordered_map>
@@ -48,6 +53,8 @@ MainWindow::MainWindow(QWidget *parent) :
     ui->ogl->setRenderType(HardwareRenderer::RenderType::OpenGL);
     ui->gles->setRenderType(HardwareRenderer::RenderType::OpenGLES);
 
+    this->setWindowIcon(QIcon(":/settings/win/icons/86Box-yellow.ico"));
+
     connect(this, &MainWindow::showMessageForNonQtThread, this, &MainWindow::showMessage_, Qt::BlockingQueuedConnection);
 
     connect(this, &MainWindow::setTitleForNonQtThread, this, &MainWindow::setTitle_, Qt::BlockingQueuedConnection);
@@ -181,6 +188,15 @@ MainWindow::MainWindow(QWidget *parent) :
         ui->actionAverage->setChecked(true);
         break;
     }
+    if (force_43 > 0) {
+        ui->actionForce_4_3_display_ratio->setChecked(true);
+    }
+    if (enable_overscan > 0) {
+        ui->actionCGA_PCjr_Tandy_EGA_S_VGA_overscan->setChecked(true);
+    }
+    if (vid_cga_contrast > 0) {
+        ui->actionChange_contrast_for_monochrome_display->setChecked(true);
+    }
 
     setFocusPolicy(Qt::StrongFocus);
     ui->gles->setFocusPolicy(Qt::NoFocus);
@@ -773,9 +789,13 @@ uint16_t x11_keycode_to_keysym(uint32_t keycode)
 
 void MainWindow::on_actionFullscreen_triggered() {
     if (video_fullscreen > 0) {
+        ui->menubar->show();
+        ui->statusbar->show();
         showNormal();
         video_fullscreen = 0;
     } else {
+        ui->menubar->hide();
+        ui->statusbar->hide();
         showFullScreen();
         video_fullscreen = 1;
     }
@@ -859,7 +879,7 @@ void MainWindow::keyPressEvent(QKeyEvent* event)
 #endif
     }
 
-    if (keyboard_isfsexit()) {
+    if ((video_fullscreen > 0) && keyboard_isfsexit()) {
         ui->actionFullscreen->trigger();
     }
 
@@ -1080,6 +1100,55 @@ void MainWindow::on_actionAverage_triggered() {
     update_greyscale_type_checkboxes(ui, ui->actionAverage, 2);
 }
 
+void MainWindow::on_actionAbout_Qt_triggered()
+{
+    QApplication::aboutQt();
+}
+
+void MainWindow::on_actionAbout_86Box_triggered()
+{
+    QMessageBox msgBox;
+    msgBox.setTextFormat(Qt::RichText);
+    msgBox.setText("<b>About 86Box</b>");
+    msgBox.setInformativeText(R"(
+An emulator of old computers
+
+Authors: Sarah Walker, Miran Grca, Fred N. van Kempen (waltje), SA1988, Tiseno100, reenigne, leilei, JohnElliott, greatpsycho, and others.
+
+Released under the GNU General Public License version 2 or later. See LICENSE for more information.
+)");
+    msgBox.setWindowTitle("About 86Box");
+    msgBox.addButton("OK", QMessageBox::ButtonRole::AcceptRole);
+    auto webSiteButton = msgBox.addButton("86box.net", QMessageBox::ButtonRole::HelpRole);
+    webSiteButton->connect(webSiteButton, &QPushButton::released, []()
+    {
+        QDesktopServices::openUrl(QUrl("https://86box.net/"));
+    });
+    msgBox.setIconPixmap(QIcon(":/settings/win/icons/86Box-yellow.ico").pixmap(32, 32));
+    msgBox.exec();
+}
+
+void MainWindow::on_actionDocumentation_triggered()
+{
+     QDesktopServices::openUrl(QUrl("https://86box.readthedocs.io"));
+}
+
+void MainWindow::on_actionCGA_PCjr_Tandy_EGA_S_VGA_overscan_triggered() {
+    update_overscan = 1;
+    video_toggle_option(ui->actionCGA_PCjr_Tandy_EGA_S_VGA_overscan, &enable_overscan);
+}
+
+void MainWindow::on_actionChange_contrast_for_monochrome_display_triggered() {
+    vid_cga_contrast ^= 1;
+    cgapal_rebuild();
+    config_save();
+}
+
+void MainWindow::on_actionForce_4_3_display_ratio_triggered() {
+    video_toggle_option(ui->actionForce_4_3_display_ratio, &force_43);
+    video_force_resize_set(1);
+}
+
 void MainWindow::setSendKeyboardInput(bool enabled)
 {
     send_keyboard_input = enabled;
diff --git a/src/qt/qt_mainwindow.hpp b/src/qt/qt_mainwindow.hpp
index f1916db65..ddfb19da3 100644
--- a/src/qt/qt_mainwindow.hpp
+++ b/src/qt/qt_mainwindow.hpp
@@ -77,6 +77,12 @@ private slots:
     void on_actionAverage_triggered();
     void on_actionBT709_HDTV_triggered();
     void on_actionBT601_NTSC_PAL_triggered();
+    void on_actionDocumentation_triggered();
+    void on_actionAbout_86Box_triggered();
+    void on_actionAbout_Qt_triggered();
+    void on_actionForce_4_3_display_ratio_triggered();
+    void on_actionChange_contrast_for_monochrome_display_triggered();
+    void on_actionCGA_PCjr_Tandy_EGA_S_VGA_overscan_triggered();
 
     void refreshMediaMenu();
     void showMessage_(const QString& header, const QString& message);
diff --git a/src/qt/qt_mainwindow.ui b/src/qt/qt_mainwindow.ui
index af8a8a2bd..fafb6b3f2 100644
--- a/src/qt/qt_mainwindow.ui
+++ b/src/qt/qt_mainwindow.ui
@@ -166,10 +166,19 @@
      <string>Media</string>
     </property>
    </widget>
+   <widget class="QMenu" name="menuAbout">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionDocumentation"/>
+    <addaction name="actionAbout_86Box"/>
+    <addaction name="actionAbout_Qt"/>
+   </widget>
    <addaction name="menuAction"/>
    <addaction name="menuView"/>
    <addaction name="menuMedia"/>
    <addaction name="menuTools"/>
+   <addaction name="menuAbout"/>
   </widget>
   <widget class="QStatusBar" name="statusbar"/>
   <action name="actionKeyboard_requires_capture">
@@ -466,6 +475,27 @@
     <string>Average</string>
    </property>
   </action>
+  <action name="actionAbout_Qt">
+   <property name="text">
+    <string>About Qt...</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::AboutQtRole</enum>
+   </property>
+  </action>
+  <action name="actionAbout_86Box">
+   <property name="text">
+    <string>About 86Box...</string>
+   </property>
+   <property name="menuRole">
+    <enum>QAction::AboutRole</enum>
+   </property>
+  </action>
+  <action name="actionDocumentation">
+   <property name="text">
+    <string>Documentation...</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>
diff --git a/src/qt/qt_rendererstack.cpp b/src/qt/qt_rendererstack.cpp
index bb80944de..b1c1bde5f 100644
--- a/src/qt/qt_rendererstack.cpp
+++ b/src/qt/qt_rendererstack.cpp
@@ -70,12 +70,14 @@ void RendererStack::mousePoll()
 #endif
 }
 
+int ignoreNextMouseEvent = 1;
 void RendererStack::mouseReleaseEvent(QMouseEvent *event)
 {
     if (this->geometry().contains(event->pos()) && event->button() == Qt::LeftButton && !mouse_capture)
     {
         plat_mouse_capture(1);
         this->setCursor(Qt::BlankCursor);
+        if (!ignoreNextMouseEvent) ignoreNextMouseEvent++; // Avoid jumping cursor when moved.
         return;
     }
     if (mouse_capture && event->button() == Qt::MiddleButton && mouse_get_buttons() < 3)
@@ -105,7 +107,6 @@ void RendererStack::wheelEvent(QWheelEvent *event)
     }
 }
 
-int ignoreNextMouseEvent = 1;
 void RendererStack::mouseMoveEvent(QMouseEvent *event)
 {
     if (QApplication::platformName().contains("wayland"))
@@ -122,8 +123,13 @@ void RendererStack::mouseMoveEvent(QMouseEvent *event)
     if (ignoreNextMouseEvent) { oldPos = event->pos(); ignoreNextMouseEvent--; event->accept(); return; }
     mousedata.deltax += event->pos().x() - oldPos.x();
     mousedata.deltay += event->pos().y() - oldPos.y();
-    if (event->globalPos().x() == 0 || event->globalPos().y() == 0) leaveEvent((QEvent*)event);
-    if (event->globalPos().x() == (screen()->geometry().width() - 1) || event->globalPos().y() == (screen()->geometry().height() - 1)) leaveEvent((QEvent*)event);
+    if (QApplication::platformName() == "eglfs")
+    {
+        leaveEvent((QEvent*)event);
+        ignoreNextMouseEvent--;
+    }
+    else if (event->globalPos().x() == 0 || event->globalPos().y() == 0) leaveEvent((QEvent*)event);
+    else if (event->globalPos().x() == (screen()->geometry().width() - 1) || event->globalPos().y() == (screen()->geometry().height() - 1)) leaveEvent((QEvent*)event);
     oldPos = event->pos();
 #endif
 }
diff --git a/src/qt_resources.qrc b/src/qt_resources.qrc
index 8c66e5ca2..0db4552e9 100644
--- a/src/qt_resources.qrc
+++ b/src/qt_resources.qrc
@@ -43,5 +43,9 @@
         <file>win/icons/zip_disabled.ico</file>
         <file>win/icons/zip_empty.ico</file>
         <file>win/icons/zip_empty_active.ico</file>
+        <file>win/icons/86Box-gray.ico</file>
+        <file>win/icons/86Box-green.ico</file>
+        <file>win/icons/86Box-red.ico</file>
+        <file>win/icons/86Box-yellow.ico</file>
     </qresource>
 </RCC>