restore mainwindow.

samples/ControlCatalog/MainWindow.xaml

@@ -13,20 +13,78 @@
         TransparencyLevelHint="{Binding TransparencyLevel}"        
         x:Name="MainWindow"
         x:Class="ControlCatalog.MainWindow" WindowState="{Binding WindowState, Mode=TwoWay}">
-  <RelativePanel
+  <NativeMenu.Menu>
-    VerticalAlignment="Stretch"
+    <NativeMenu>
-    HorizontalAlignment="Stretch">
+      <NativeMenuItem Header="File">
-    <Rectangle
+        <NativeMenuItem.Menu>
-        Name="rectangle1"
+          <NativeMenu>
-        RelativePanel.AlignLeftWithPanel="True"
+            <NativeMenuItem Icon="/Assets/test_icon.ico" Header="Open" Clicked="OnOpenClicked" Gesture="Ctrl+O"/>
-        Width="360"
+            <NativeMenuItemSeperator/>
-        Height="50"
+            <NativeMenuItem Icon="/Assets/github_icon.png" Header="Recent">
-        Fill="Red"/>
+              <NativeMenuItem.Menu>
-    <Rectangle
+                <NativeMenu/>
-        Name="rectangle2"
+              </NativeMenuItem.Menu>
-        RelativePanel.Below="rectangle1"
+            </NativeMenuItem>
-        Width="360"
+            <NativeMenuItemSeperator/>
-        Height="50"
+            <NativeMenuItem Header="{x:Static local:MainWindow.MenuQuitHeader}"
-        Fill="Green" />
+                            Gesture="{x:Static local:MainWindow.MenuQuitGesture}"
-  </RelativePanel>
+                            Clicked="OnCloseClicked" />
+          </NativeMenu>
+        </NativeMenuItem.Menu>
+      </NativeMenuItem>
+      <NativeMenuItem Header="Edit">
+        <NativeMenuItem.Menu>
+          <NativeMenu>
+            <NativeMenuItem Header="Copy"/>
+            <NativeMenuItem Header="Paste"/>
+          </NativeMenu>
+        </NativeMenuItem.Menu>
+      </NativeMenuItem>
+      <NativeMenuItem Header="Options">
+        <NativeMenuItem.Menu>
+          <NativeMenu>
+           <NativeMenuItem Header="Check Me (None)" 
+                            Command="{Binding ToggleMenuItemCheckedCommand}"
+                            ToggleType="None"
+                            IsChecked="{Binding IsMenuItemChecked}"  />
+            <NativeMenuItem Header="Check Me (CheckBox)" 
+                            Command="{Binding ToggleMenuItemCheckedCommand}"
+                            ToggleType="CheckBox"
+                            IsChecked="{Binding IsMenuItemChecked}"  />
+            <NativeMenuItem Header="Check Me (Radio)" 
+                            Command="{Binding ToggleMenuItemCheckedCommand}"
+                            ToggleType="Radio"
+                            IsChecked="{Binding IsMenuItemChecked}"  />
+          </NativeMenu>
+        </NativeMenuItem.Menu>
+      </NativeMenuItem>
+    </NativeMenu>
+  </NativeMenu.Menu>
+
+  <Window.DataTemplates>
+    <DataTemplate DataType="vm:NotificationViewModel">
+      <v:CustomNotificationView />
+    </DataTemplate>
+  </Window.DataTemplates>
+  <Panel>
+    <Panel Margin="{Binding #MainWindow.OffScreenMargin}">
+      <DockPanel LastChildFill="True" Margin="{Binding #MainWindow.WindowDecorationMargin}">
+        <Menu Name="MainMenu" DockPanel.Dock="Top">
+          <MenuItem Header="File">
+            <MenuItem Header="Exit" Command="{Binding ExitCommand}" />
+          </MenuItem>
+          <MenuItem Header="Help">
+            <MenuItem Header="About" Command="{Binding AboutCommand}" />
+          </MenuItem>
+        </Menu>
+        <local:MainView />
+      </DockPanel>
+    </Panel>
+    <Border IsVisible="{Binding ExtendClientAreaEnabled}" BorderThickness="1 1 1 0" CornerRadius="4 4 0 0" BorderBrush="#55000000" Height="22" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="250 8 0 0">
+      <Border.Background>
+        <SolidColorBrush Color="White" Opacity="0.7" />
+      </Border.Background>
+      <TextBlock Margin="5 5 5 0" Text="Content In Title Bar" />
+    </Border>
+  </Panel>
 </Window>

samples/ControlCatalog/MainWindow.xaml.cs

@@ -28,10 +28,10 @@ namespace ControlCatalog
             };
 
             DataContext = new MainWindowViewModel(_notificationArea);
-            //_recentMenu = ((NativeMenu.GetMenu(this).Items[0] as NativeMenuItem).Menu.Items[2] as NativeMenuItem).Menu;
+            _recentMenu = ((NativeMenu.GetMenu(this).Items[0] as NativeMenuItem).Menu.Items[2] as NativeMenuItem).Menu;
 
-            //var mainMenu = this.FindControl<Menu>("MainMenu");
+            var mainMenu = this.FindControl<Menu>("MainMenu");
-            //mainMenu.AttachedToVisualTree += MenuAttached;
+            mainMenu.AttachedToVisualTree += MenuAttached;
         }
 
         public static string MenuQuitHeader => RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "Quit Avalonia" : "E_xit";