allow only one instance of app to be running

Author: sergiye

GUI/AboutBox.Designer.cs

@@ -194,7 +194,7 @@ private string GetString() {
         case SensorType.Level:
           return string.Format("{0:F0}", sensor.Value);
         case SensorType.Power:
-          return string.Format("{0:N1}", sensor.Value);
+          return string.Format(sensor.Value < 10 ? "{0:N1}" : "{0:F0}", sensor.Value);
         case SensorType.Data:
           return string.Format("{0:F0}", sensor.Value);
         case SensorType.Factor:

GUI/SensorNotifyIcon.cs

@@ -396,13 +396,8 @@
     <EmbeddedResource Include="Resources\nvidia.png" />
   </ItemGroup>
   <ItemGroup>
-    <Content Include="Controls\Resources\minus.bmp" />
-    <Content Include="Controls\Resources\plus.bmp" />
-    <Content Include="Controls\Resources\uncheck.bmp" />
-    <Content Include="Controls\Resources\unknown.bmp" />
     <EmbeddedResource Include="Hardware\WinRing0.sys" />
     <EmbeddedResource Include="Hardware\WinRing0x64.sys" />
-    <Content Include="Controls\Resources\loading_icon" />
     <None Include="Controls\.editorconfig" />
     <None Include="Controls\Tree\ClassDiagram.cd" />
     <None Include="Controls\Tree\NodeControls\ClassDiagram.cd" />
@@ -519,13 +514,6 @@
   <ItemGroup>
     <EmbeddedResource Include="Resources\throughput.png" />
   </ItemGroup>
-  <ItemGroup>
-    <Content Include="Controls\Resources\check.bmp" />
-    <Content Include="Controls\Resources\DVSplit.cur" />
-    <Content Include="Controls\Resources\Folder.bmp" />
-    <Content Include="Controls\Resources\FolderClosed.bmp" />
-    <Content Include="Controls\Resources\Leaf.bmp" />
-  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ProjectExtensions>
     <VisualStudio AllowExistingFolder="true" />

OpenHardwareMonitor.csproj

@@ -19,28 +19,35 @@ This Source Code Form is subject to the terms of the Mozilla Public
 namespace OpenHardwareMonitor {
   public static class Program {
 
+    static Mutex mutex = new Mutex(true, "{3661aef2-95dc-433e-932c-2e06112d24ec}");
+
     [STAThread]
     public static void Main() {
-      #if !DEBUG
-        Application.ThreadException +=
-          new ThreadExceptionEventHandler(Application_ThreadException);
-        Application.SetUnhandledExceptionMode(
-          UnhandledExceptionMode.CatchException);
-
-        AppDomain.CurrentDomain.UnhandledException +=
-          new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
-      #endif
 
       if (!IsNetFramework45Installed())
         Environment.Exit(0);
 
+      if (!mutex.WaitOne(TimeSpan.Zero, true)) {
+        MessageBox.Show("Another instance of the application is already running.", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Information);
+        Environment.Exit(0);
+      }
+
+      #if !DEBUG
+      Application.ThreadException +=
+        new ThreadExceptionEventHandler(Application_ThreadException);
+      Application.SetUnhandledExceptionMode(
+        UnhandledExceptionMode.CatchException);
+
+      AppDomain.CurrentDomain.UnhandledException +=
+        new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);
+      #endif
+
       Application.EnableVisualStyles();
       Application.SetCompatibleTextRenderingDefault(false);
-      using (GUI.MainForm form = new GUI.MainForm()) {
-        form.FormClosed += delegate(Object sender, FormClosedEventArgs e) {
-          Application.Exit();
-        };
+      using (var form = new MainForm()) {
+        form.FormClosed += (sender, e) => Application.Exit();
         Application.Run();
+        mutex.ReleaseMutex();
       }
     }
 

Program.cs

@@ -1,24 +1,12 @@
-/*
- 
-  This Source Code Form is subject to the terms of the Mozilla Public
-  License, v. 2.0. If a copy of the MPL was not distributed with this
-  file, You can obtain one at http://mozilla.org/MPL/2.0/.
- 
-  Copyright (C) 2009-2020 Michael Möller <mmoeller@openhardwaremonitor.org>
-	
-*/
-
-using System;
-using System.Reflection;
-using System.Runtime.CompilerServices;
+using System.Reflection;
 using System.Runtime.InteropServices;
 
 [assembly: AssemblyTitle("Open Hardware Monitor")]
 [assembly: AssemblyDescription("")]
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("")]
 [assembly: AssemblyProduct("Open Hardware Monitor")]
-[assembly: AssemblyCopyright("Copyright © 2009-2020 Michael Möller")]
+[assembly: AssemblyCopyright("Copyright © 2009-2022 Sergiy Egoshyn")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]