Clipz - A Friendly Introduction to the Windows 7 Taskbar Features

using System;
using System.Threading;
using System.Windows.Forms;
using Clipz.NativeMethods;
using Microsoft.WindowsAPICodePack.Taskbar;

namespace Clipz
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            bool firstInstance;
            // Check whether the application is already running.
            var mutex = new Mutex(true, "Clipz", out firstInstance);
           
            if (!firstInstance)
            {
                // If there is another instance running, get the command line agruments and
                // send them as a windows message to that instance.
                ProcessAgruments();
            }
            else
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);

                if (TaskbarManager.IsPlatformSupported)
                {
                    Application.Run(new Form1());
                }
            }
        }
        /// <summary>
        /// Processes the command line agruments.
        /// </summary>
        public static void ProcessAgruments()
        {
            if (Environment.GetCommandLineArgs().Length <= 1) return;

            switch (Environment.GetCommandLineArgs()[1])
            {
                // Send a message via the User32 native method.  The User32.ChangeModeMessage is a static
                // integer that's registered at startup and holds a value representing a pointer to 
                // a custom message.
                case Form1.ModeCommandArgument:
                    User32.SendMessage("Clipz", User32.ChangeModeMessage, IntPtr.Zero, IntPtr.Zero);
                    break;

                case Form1.ClearCommandArgument:
                    User32.SendMessage("Clipz", User32.ClearContents, IntPtr.Zero, IntPtr.Zero);
                    break;
            }
        }
    }
}