Share the Synix menu design

Author: ubidzz

SynixApp/Design/SynixMenuStyler.cs

@@ -0,0 +1,71 @@
+// ============================================================================
+// PROJECT: Synix Game Server Control Panel
+// AUTHOR: Jason Turner (ubidzz)
+// COPYRIGHT: © 2026 All Rights Reserved.
+// ============================================================================
+using System.Runtime.InteropServices;
+
+namespace Synix_Control_Panel.SynixApp.Design
+{
+	public static class SynixMenuStyler
+	{
+		private const int DwmWindowCornerPreference = 33;
+		private const int DwmCornerPreferenceRound = 2;
+		private static readonly Font MenuFont = new("Segoe UI", 11F, FontStyle.Regular);
+
+		[DllImport("dwmapi.dll", CharSet = CharSet.Unicode, PreserveSig = false)]
+		private static extern void DwmSetWindowAttribute(
+			IntPtr window,
+			int attribute,
+			ref int value,
+			uint valueSize);
+
+		public static void Apply(ToolStripDropDown menu)
+		{
+			ArgumentNullException.ThrowIfNull(menu);
+			menu.Renderer = new SynixMenuRenderer();
+			menu.BackColor = SettingsPalette.Card;
+			menu.ForeColor = SettingsPalette.PrimaryText;
+			menu.Font = MenuFont;
+			if (menu is ContextMenuStrip contextMenu)
+				contextMenu.ShowImageMargin = false;
+
+			ApplyRoundedWindow(menu);
+			foreach (ToolStripItem item in menu.Items)
+			{
+				item.BackColor = SettingsPalette.Card;
+				item.ForeColor = SettingsPalette.PrimaryText;
+				item.Padding = new Padding(0, 4, 0, 4);
+				if (item is ToolStripDropDownItem dropDownItem && dropDownItem.HasDropDownItems)
+					Apply(dropDownItem.DropDown);
+			}
+		}
+
+		private static void ApplyRoundedWindow(ToolStripDropDown menu)
+		{
+			void ApplyDwm()
+			{
+				if (Environment.OSVersion.Version.Build < 22000)
+					return;
+				try
+				{
+					int preference = DwmCornerPreferenceRound;
+					DwmSetWindowAttribute(
+						menu.Handle,
+						DwmWindowCornerPreference,
+						ref preference,
+						sizeof(int));
+				}
+				catch (ExternalException)
+				{
+					// Windows can reject this visual hint; the renderer still supplies the theme.
+				}
+			}
+
+			if (menu.IsHandleCreated)
+				ApplyDwm();
+			else
+				menu.HandleCreated += (_, _) => ApplyDwm();
+		}
+	}
+}

SynixApp/MainGUI.cs

@@ -63,10 +63,7 @@ public MainGUI()
 			FileHandler.LoadServers();
 			AddGuidanceMenuItems();
 
-			contextMenuStrip.Renderer = new Synix_Control_Panel.SynixApp.Design.SynixMenuRenderer();
-			contextMenuStrip.ShowImageMargin = false;
-			contextMenuStrip.Font = new Font("Segoe UI", 11F, FontStyle.Regular);
-			ApplyMenuRoundingAndSpacing(contextMenuStrip);
+			SynixMenuStyler.Apply(contextMenuStrip);
 
 			dataGridView1.AutoGenerateColumns = false;
 			dataGridView1.DataSource = _visibleServers;
@@ -171,41 +168,6 @@ private void AddGuidanceMenuItems()
 			contextMenuStrip.Items.Insert(insertAt, connectionInformation);
 		}
 
-		[DllImport("dwmapi.dll", CharSet = CharSet.Unicode, PreserveSig = false)]
-		internal static extern void DwmSetWindowAttribute(IntPtr hwnd, int attribute, ref int pvAttribute, uint cbAttribute);
-
-		private void ApplyMenuRoundingAndSpacing(ToolStripDropDown menu)
-		{
-			void ApplyDwm()
-			{
-				if (Environment.OSVersion.Version.Build >= 22000)
-				{
-					int DWMWA_WINDOW_CORNER_PREFERENCE = 33;
-					int DWMWCP_ROUND = 2;
-					DwmSetWindowAttribute(menu.Handle, DWMWA_WINDOW_CORNER_PREFERENCE, ref DWMWCP_ROUND, sizeof(int));
-				}
-			}
-
-			if (menu.IsHandleCreated)
-			{
-				ApplyDwm();
-			}
-			else
-			{
-				menu.HandleCreated += (s, e) => ApplyDwm();
-			}
-
-			foreach (ToolStripItem item in menu.Items)
-			{
-				item.Padding = new Padding(0, 4, 0, 4);
-
-				if (item is ToolStripDropDownItem dropDownItem && dropDownItem.HasDropDownItems)
-				{
-					ApplyMenuRoundingAndSpacing(dropDownItem.DropDown);
-				}
-			}
-		}
-
 		private void dataGridView1_DataError(object sender, DataGridViewDataErrorEventArgs e)
 		{
 			e.ThrowException = false;

SynixApp/Tests/ModPluginManagerTests.cs

@@ -15,6 +15,36 @@ namespace Synix_Control_Panel.Tests;
 
 public sealed class ModPluginManagerTests
 {
+	[Fact]
+	public void SharedMenuStylerAppliesTheSynixMenuDesign()
+	{
+		Exception? failure = null;
+		Thread thread = new(() =>
+		{
+			try
+			{
+				using ContextMenuStrip menu = new();
+				ToolStripMenuItem item = new("Nexus Mods");
+				menu.Items.Add(item);
+
+				SynixMenuStyler.Apply(menu);
+
+				Assert.IsType<SynixMenuRenderer>(menu.Renderer);
+				Assert.False(menu.ShowImageMargin);
+				Assert.Equal(new Padding(0, 4, 0, 4), item.Padding);
+				Assert.Equal(11F, menu.Font.Size);
+			}
+			catch (Exception exception)
+			{
+				failure = exception;
+			}
+		});
+		thread.SetApartmentState(ApartmentState.STA);
+		thread.Start();
+		thread.Join();
+		Assert.Null(failure);
+	}
+
 	[Fact]
 	public void SharedGridThemeDoesNotAddTheDashboardTooltip()
 	{

SynixApp/UI/ModPluginManager.cs

@@ -49,12 +49,6 @@ internal ModPluginManager(GameServer server)
 			BackColor = SettingsPalette.Window;
 			ForeColor = SettingsPalette.PrimaryText;
 			Font = new Font("Segoe UI", 9.5F);
-			_catalogMenu.BackColor = SettingsPalette.Card;
-			_catalogMenu.ForeColor = SettingsPalette.PrimaryText;
-			_catalogMenu.Font = Font;
-			_catalogMenu.Padding = new Padding(4);
-			_catalogMenu.ShowImageMargin = false;
-			_catalogMenu.Renderer = new SynixMenuRenderer();
 
 			Label pageHeading = Heading("Mod & Plugin Manager", 28, 20, 640, 42, 19F);
 			pageHeading.Name = "modPluginManagerHeading";
@@ -676,15 +670,12 @@ private void BrowseCatalog()
 				ToolStripMenuItem item = new(catalog.Name)
 				{
 					ForeColor = SettingsPalette.PrimaryText,
-					BackColor = SettingsPalette.Card,
-					AutoSize = false,
-					Margin = new Padding(0, 2, 0, 2),
-					Padding = new Padding(8, 3, 8, 3),
-					Size = new Size(220, 38)
+					BackColor = SettingsPalette.Card
 				};
 				item.Click += (_, _) => OpenCatalog(catalog.Uri);
 				_catalogMenu.Items.Add(item);
 			}
+			SynixMenuStyler.Apply(_catalogMenu);
 			_catalogMenu.Show(_browseCatalog, new Point(0, _browseCatalog.Height + 4));
 		}