WinCe에서 어플리케이션을 하나만 켜는 방법

방법1:

namespace MyNameSpace
{

    static class Program

    {

        [DllImport("Toolhelp.dll")]

        public static extern IntPtr CreateToolhelp32Snapshot(uint flags, uint processid);

        [DllImport("Toolhelp.dll")]

        public static extern int Process32First(IntPtr handle, ref PROCESSENTRY32 pe);

        [DllImport("Toolhelp.dll")]

        public static extern int Process32Next(IntPtr handle, ref PROCESSENTRY32 pe);

        /// <summary>

        ///          。

        /// </summary>

        [MTAThread]

        static void Main()

        {

            IntPtr handle = CreateToolhelp32Snapshot((uint)SnapShotFlags.TH32CS_SNAPPROCESS, 0);

            int count = 0;

            if ((int)handle != -1)

            {

                PROCESSENTRY32 pe32 = new PROCESSENTRY32();

                pe32.dwSize = (uint)Marshal.SizeOf(typeof(PROCESSENTRY32));

                int bMore = Process32First(handle, ref pe32);

                while (bMore == 1)

                {

                    if (pe32.szExeFile == "      ")

                        count++;

                    bMore = Process32Next(handle, ref pe32);

                }

            }

            if (count > 1)

            {

                MessageBox.Show("      !");

                return;

            }

            else

            Application.Run(new FrmLogin());



        }

    }

    [StructLayout(LayoutKind.Sequential)]

    public struct PROCESSENTRY32

    {

        public uint dwSize;

        public uint cntUsage;

        public uint th32ProcessID;

        public IntPtr th32DefaultHeapID;

        public uint th32ModuleID;

        public uint cntThreads;

        public uint th32ParentProcessID;

        public int pcPriClassBase;

        public uint dwFlags;

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]//  ，      

        public string szExeFile;

        public uint th32MemoryBase;

        public uint th32AccessKey;

    }



    public enum SnapShotFlags : uint

    {

        TH32CS_SNAPHEAPLIST = 0x00000001,

        TH32CS_SNAPPROCESS = 0x00000002,

        TH32CS_SNAPTHREAD = 0x00000004,

        TH32CS_SNAPMODULE = 0x00000008,

        TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST | TH32CS_SNAPPROCESS | TH32CS_SNAPTHREAD | TH32CS_SNAPMODULE),

        TH32CS_GETALLMODS = 0x80000000

    }



}

방법2:
타사 라이브러리 사용:
OpenNETCF
공식 홈페이지: http://www.opennetcf.com

using OpenNETCF.Threading;



namespace MyNameSpace

{

    static class Program

    {

        /// <summary>

        ///          。

        /// </summary>

        [MTAThread]

        static void Main()

        {

            bool firstInstance;

            OpenNETCF.Threading.NamedMutex mutex = new OpenNETCF.Threading.NamedMutex(false, "      ", out firstInstance);

            if (!firstInstance)

            {

                MessageBox.Show("     ");

                return;

            }



            Application.Run(new FrmLogin());

            GC.KeepAlive(mutex);



        }

    }





}