Check for updates when tray menu opens

- Checks for updates in background when user clicks tray icon
- Shows clickable blue banner when update available
- Rate limited to once per hour to avoid spam
- Version 1.1.5

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

DellMonitorControl/DellMonitorControl.csproj

@@ -15,9 +15,9 @@
 	</PropertyGroup>
 
 	<PropertyGroup>
-		<Version>1.1.4</Version>
-		<AssemblyVersion>1.1.4.0</AssemblyVersion>
-		<FileVersion>1.1.4.0</FileVersion>
+		<Version>1.1.5</Version>
+		<AssemblyVersion>1.1.5.0</AssemblyVersion>
+		<FileVersion>1.1.5.0</FileVersion>
 	</PropertyGroup>
 
 	<ItemGroup>

DellMonitorControl/MainWindow.xaml

@@ -187,13 +187,26 @@
             <!-- Header -->
             <Border Grid.Row="0" Background="#444" CornerRadius="8,8,0,0" Padding="12,10">
                 <Grid>
-                    <TextBlock Text="Monitor Control" Foreground="White" FontSize="14" FontWeight="SemiBold" VerticalAlignment="Center"/>
-                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
-                        <Button Content="About" Margin="0,0,6,0" Click="AboutButton_Click"
-                                Style="{StaticResource DarkButton}" FontSize="11"/>
-                        <Button Content="Exit" Click="ExitButton_Click"
-                                Style="{StaticResource DarkButton}" FontSize="11"/>
-                    </StackPanel>
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto"/>
+                        <RowDefinition Height="Auto"/>
+                    </Grid.RowDefinitions>
+                    <Grid Grid.Row="0">
+                        <TextBlock Text="Monitor Control" Foreground="White" FontSize="14" FontWeight="SemiBold" VerticalAlignment="Center"/>
+                        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                            <Button Content="About" Margin="0,0,6,0" Click="AboutButton_Click"
+                                    Style="{StaticResource DarkButton}" FontSize="11"/>
+                            <Button Content="Exit" Click="ExitButton_Click"
+                                    Style="{StaticResource DarkButton}" FontSize="11"/>
+                        </StackPanel>
+                    </Grid>
+                    <!-- Update Banner -->
+                    <Border Name="updateBanner" Grid.Row="1" Background="#0078D4" CornerRadius="3"
+                            Padding="8,4" Margin="0,8,0,0" Visibility="Collapsed" Cursor="Hand"
+                            MouseLeftButtonUp="UpdateBanner_Click">
+                        <TextBlock Name="updateText" Text="Update available!" Foreground="White"
+                                   FontSize="11" HorizontalAlignment="Center"/>
+                    </Border>
                 </Grid>
             </Border>
 

DellMonitorControl/MainWindow.xaml.cs

@@ -18,6 +18,8 @@ public partial class MainWindow : Window
     private List<(XMonitor Monitor, List<InputSourceOption> Options)> _loadedMonitors = new();
     private Storyboard? _spinnerStoryboard;
     private DispatcherTimer? _showLogButtonTimer;
+    private UpdateInfo? _pendingUpdate;
+    private DateTime _lastUpdateCheck = DateTime.MinValue;
 
     public MainWindow()
     {
@@ -53,12 +55,50 @@ public partial class MainWindow : Window
         };
         _showLogButtonTimer.Start();
 
+        // Check for updates in background (max once per hour)
+        if ((DateTime.Now - _lastUpdateCheck).TotalMinutes > 60)
+        {
+            _lastUpdateCheck = DateTime.Now;
+            _ = CheckForUpdatesAsync();
+        }
+
         Dispatcher.BeginInvoke(new Action(() =>
         {
             Top = workArea.Bottom - ActualHeight - 10;
         }), DispatcherPriority.Loaded);
     }
 
+    private async Task CheckForUpdatesAsync()
+    {
+        try
+        {
+            var update = await UpdateChecker.CheckForUpdateAsync();
+            if (update != null)
+            {
+                _pendingUpdate = update;
+                await Dispatcher.InvokeAsync(() => ShowUpdateBanner(update));
+            }
+        }
+        catch
+        {
+            // Silently ignore update check failures
+        }
+    }
+
+    private void ShowUpdateBanner(UpdateInfo update)
+    {
+        updateBanner.Visibility = Visibility.Visible;
+        updateText.Text = $"v{update.LatestVersion} available - Click to update";
+    }
+
+    private void UpdateBanner_Click(object sender, System.Windows.Input.MouseButtonEventArgs e)
+    {
+        if (_pendingUpdate != null && !string.IsNullOrEmpty(_pendingUpdate.DownloadUrl))
+        {
+            UpdateChecker.OpenDownloadPage(_pendingUpdate.DownloadUrl);
+        }
+    }
+
     private void Window_Deactivated(object sender, EventArgs e)
     {
         Hide();

DellMonitorControl/MonitorControl.iss

@@ -1,5 +1,5 @@
 #define MyAppName "Monitor Control"
-#define MyAppVersion "1.1.4"
+#define MyAppVersion "1.1.5"
 #define MyAppPublisher "MarketAlly"
 #define MyAppExeName "DellMonitorControl.exe"
 #define MyAppIcon "MonitorIcon.ico"