new folder structure and new C# script host

src/Misc/Program.cs

@@ -0,0 +1,105 @@
+
+using System;
+using System.Windows.Forms;
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading;
+using System.Diagnostics;
+
+using static mpvnet.Core;
+
+namespace mpvnet
+{
+    static class Program
+    {
+        [STAThread]
+        static void Main()
+        {
+            try
+            {
+                Application.EnableVisualStyles();
+                Application.SetCompatibleTextRenderingDefault(false);
+
+                if (App.IsStartedFromTerminal)
+                    WinAPI.AttachConsole(-1 /*ATTACH_PARENT_PROCESS*/);
+
+                if (core.ConfigFolder == "")
+                    return;
+
+                string[] args = Environment.GetCommandLineArgs().Skip(1).ToArray();
+
+                if (args.Length >= 2 && args[0] == "--reg-file-assoc")
+                {
+                    if (args[1] == "audio")
+                        FileAssociation.Register(Core.AudioTypes);
+                    else if (args[1] == "video")
+                        FileAssociation.Register(Core.VideoTypes);
+                    else if (args[1] == "image")
+                        FileAssociation.Register(Core.ImageTypes);
+                    else
+                        FileAssociation.Register(args.Skip(1).ToArray());
+
+                    return;
+                }
+
+                App.Init();
+                Mutex mutex = new Mutex(true, "mpvnetProcessInstance", out bool isFirst);
+
+                if ((App.ProcessInstance == "single" || App.ProcessInstance == "queue") && !isFirst)
+                {
+                    List<string> files = new List<string>();
+                    files.Add(App.ProcessInstance);
+
+                    foreach (string arg in args)
+                    {
+                        if (!arg.StartsWith("--") && (arg == "-" || arg.Contains("://") ||
+                            arg.Contains(":\\") || arg.StartsWith("\\\\")))
+
+                            files.Add(arg);
+                        else if (arg == "--queue")
+                            files[0] = "queue";
+                    }
+
+                    Process[] procs = Process.GetProcessesByName("mpvnet");
+
+                    for (int i = 0; i < 20; i++)
+                    {
+                        foreach (Process proc in procs)
+                        {
+                            if (proc.MainWindowHandle != IntPtr.Zero)
+                            {
+                                WinAPI.AllowSetForegroundWindow(proc.Id);
+                                var data = new WinAPI.COPYDATASTRUCT();
+                                data.lpData = string.Join("\n", files.ToArray());
+                                data.cbData = data.lpData.Length * 2 + 1;
+                                WinAPI.SendMessage(proc.MainWindowHandle, 0x004A /*WM_COPYDATA*/, IntPtr.Zero, ref data);
+                                mutex.Dispose();
+
+                                if (App.IsStartedFromTerminal)
+                                    WinAPI.FreeConsole();
+
+                                return;
+                            }
+                        }
+
+                        Thread.Sleep(50);
+                    }
+
+                    mutex.Dispose();
+                    return;
+                }
+
+                Application.Run(new MainForm());
+
+                if (App.IsStartedFromTerminal)
+                    WinAPI.FreeConsole();
+
+                mutex.Dispose();
+            }
+            catch (Exception ex)
+            {
+                Msg.ShowException(ex);
+            }
+        }
+    }
+}