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https://github.com/Hofknecht/SystemTrayMenu.git
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This was not possible before and was solved by sending hotkey in version 1. In v2 it will use named pipes for IPC communication, so it don't rely on hotkeys any more.
96 lines
3.4 KiB
C#
96 lines
3.4 KiB
C#
// <copyright file="SingleAppInstance.cs" company="PlaceholderCompany">
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// Copyright (c) PlaceholderCompany. All rights reserved.
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// </copyright>
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namespace SystemTrayMenu.Utilities
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{
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using System;
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using System.Diagnostics;
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using System.Linq;
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using SystemTrayMenu.Business;
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internal static class SingleAppInstance
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{
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private const string IpcServiceName = nameof(SingleAppInstance);
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private const string IpcWakeupCmd = "wakeup";
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private const string IpcWakeupResponseOK = "OK";
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private static IpcPipe? ipcPipe;
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internal static event Action? Wakeup;
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internal static bool Initialize()
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{
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bool success = true;
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try
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{
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foreach (Process p in
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Process.GetProcessesByName(Process.GetCurrentProcess().ProcessName).
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Where(s => s.Id != Environment.ProcessId))
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{
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try
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{
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if (Properties.Settings.Default.SendHotkeyInsteadKillOtherInstances)
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{
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// Instead of using hotkeys we use IPC via pipes
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string pipeName = IpcServiceName + "-" + p.Id.ToString();
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ipcPipe = new(1, pipeName);
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string response = ipcPipe.SendToServer(IpcWakeupCmd) ?? string.Empty;
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if (!string.Equals(response, IpcWakeupResponseOK))
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{
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throw new Exception("Error at IPC pipe \"" + pipeName + "\": \"" + response + "\"");
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}
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ipcPipe.Dispose();
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ipcPipe = null;
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success = false; // This is "success" but it means we cannot start this instance -> false
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}
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else
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{
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if (!p.CloseMainWindow())
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{
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p.Kill();
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}
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p.WaitForExit();
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p.Close();
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}
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}
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catch (Exception ex)
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{
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Log.Error("Run as single instance failed", ex);
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success = false;
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}
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}
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}
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catch (Exception ex)
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{
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Log.Error("Run as single instance failed", ex);
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success = false;
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}
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if (success)
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{
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// We are the only process running, so we are responsible for the IPC server
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ipcPipe = new(1, IpcServiceName + "-" + Environment.ProcessId.ToString());
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ipcPipe.StartServer((request) =>
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{
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if (string.Equals(request, IpcWakeupCmd))
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{
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Wakeup?.Invoke();
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return IpcWakeupResponseOK;
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}
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return string.Empty;
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});
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}
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return success;
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}
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internal static void Unload()
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{
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ipcPipe?.Dispose();
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}
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}
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}
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