一些API函数

最近偷的半日闲，看了一下API函数，挑了几个简单的做了一个小程序，都有注释，可以给有兴趣的朋友一晒

using System;
using System.Runtime.InteropServices;
using System.Collections;

namespace ConsoleApplication1
{

    /**//// <summary>
    /// Class1 的摘要说明。
    /// </summary>
    class Class1
    {
        class Win32API 
        { 
            [DllImport("user32")]
            public static extern long ExitWindowsEx(HowExitConst HowExitConst, long dwReserved);

            public enum HowExitConst:uint
            {
                EWX_LOGOFF = 0, // 登出;
                EWX_SHUTDOWN = 1,// 關機
                EWX_REBOOT= 2,//重開機;
                EWX_FORCE=4, // 強制關機
            }


            [DllImport("shell32")] 
            public static extern long ShellAbout(long uFlags, long dwReserved);

            [DllImport("kernel32.dll", EntryPoint="Beep")]
            public static extern int Beep(int dwFreq,int dwDuration);

            [DllImport("kernel32.dll", EntryPoint="GetTickCount")]
            public static extern int GetTickCount ();

            [DllImport("user32.dll", EntryPoint="SwapMouseButton")]
            public static extern int SwapMouseButton(int bSwap);

            [DllImport("kernel32.dll", EntryPoint="LoadModule")]
            public static extern int LoadModule(string lpModuleName,ref int lpParameterBlock);

            [DllImport("shell32.dll", EntryPoint="ShellExecute")]
            public static extern int ShellExecute (
                int hwnd,
                string lpOperation,
                string lpFile,
                string lpParameters,
                string lpDirectory,
                int nShowCmd
                );

            [DllImport("winmm.dll", EntryPoint="mciSendString")]
            public static extern int mciSendString (
                string lpstrCommand,
                string lpstrReturnString,
                int uReturnLength,
                int hwndCallback
                );

            [DllImport("user32.dll", EntryPoint="WindowFromPoint")]
            public static extern int WindowFromPoint (
                int xPoint,
                int yPoint
                );

            [DllImport("user32.dll", EntryPoint="EnableWindow")]
            public static extern int EnableWindow (
                int hwnd,
                int fEnable
                );

            [DllImport("user32.dll", EntryPoint="FlashWindow")]
            public static extern int FlashWindow (
                int hwnd,
                int bInvert
                );

            [DllImport("user32.dll", EntryPoint="GetDesktopWindow")]
            public static extern int GetDesktopWindow ();

            [DllImport("user32.dll", EntryPoint="GetWindowText")]
            public static extern int GetWindowText (
                int hwnd,
                out STRINGBUFFER lpString,
                int cch
                );

            public struct STRINGBUFFER
            {        
                [MarshalAs(UnmanagedType.ByValTStr, SizeConst=256)]        
                public string szText;    
            }

            [DllImport("user32.dll", EntryPoint="ShowWindow")]
            public static extern int ShowWindow (
                int hwnd,
                nCmdShow nCmdShow
                );
            public enum nCmdShow:uint
            {
                SW_FORCEMINIMIZE=0x0,
                SW_HIDE=0x1,
                SW_MAXIMIZE=0x2,
                SW_MINIMIZE=0x3,
                SW_RESTORE=0x4,
                SW_SHOW=0x5,
                SW_SHOWDEFAULT=0x6,
                SW_SHOWMAXIMIZED=0x7,
                SW_SHOWMINIMIZED=0x8,
                SW_SHOWMINNOACTIVE=0x9,
                SW_SHOWNA=0xA,
                SW_SHOWNOACTIVATE=0xB,
                SW_SHOWNORMAL=0xC,
            }

        }
        /**//// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            //
            // TODO: 在此处添加代码以启动应用程序
            //
//            关闭系统
//            Console.WriteLine("bye,boy!");
//            Console.WriteLine("Press Enter key to exit.");
            Win32API.ExitWindowsEx(Win32API.HowExitConst.EWX_SHUTDOWN,1);
//            Console.ReadLine(); 
            
//            发声        
//            System.Random ran=new Random();
//            for (int i=0;i<30;i++)
//            {
//                Win32API.Beep(ran.Next(10000),100);
//            }

//            得到系统运行时间
//            int hour;
//            int min;
//            int second;
//            hour=Win32API.GetTickCount()/3600000;
//            min=(Win32API.GetTickCount()/60000-hour*60);
//            second=(Win32API.GetTickCount()/1000-hour*3600-min*60);
//            Console.WriteLine(hour+"hours"+min+"minutes"+second+"seconds");

//            鼠标左右健转换
//            Console.WriteLine("输入一个数字：");
//            int parant = int.Parse(Console.ReadLine());
//            Win32API.SwapMouseButton(parant);
            
//            打开文件
//            Win32API.ShellExecute(0,"open","http://www.gogle.com",null,null,1);

//            打开光驱&file
//            Console.WriteLine("输入一个数字：");
//            int cdparant = int.Parse(Console.ReadLine());
//            if (cdparant==0)
//            {
//                Win32API.mciSendString("Set CDAudio Door Open Wait",null,0,0);
//            }
//            else
//            {
//                Win32API.mciSendString("Set CDAudio Door Closed Wait",null,0,0);
//            }

//            Win32API.mciSendString("open aaa.wav type waveaudio",null,0,0);

//            锁顶窗口

            

//            Console.WriteLine(Win32API.WindowFromPoint(0,0));
//            long result=Win32API.EnableWindow(Win32API.WindowFromPoint(0,0),0);
//            Win32API.STRINGBUFFER winname;
//            Win32API.GetWindowText(Win32API.WindowFromPoint(0,0),out winname,256);
//            if (result==0)
//                Console.WriteLine(winname.szText+" Lock Success!");
//            else
//                Console.WriteLine(winname.szText+"Lock Failed!");
            

//            闪烁窗口
//            Console.WriteLine(Win32API.WindowFromPoint(0,0));
//            Win32API.STRINGBUFFER winname;
//            Win32API.GetWindowText(Win32API.WindowFromPoint(0,0),out winname,256);
//            Console.WriteLine(winname.szText+"窗口 is been Flash,she say ,Please click me!!");
//            Win32API.FlashWindow(Win32API.WindowFromPoint(0,0),1000);

//            最大化窗口
//            Console.WriteLine(Win32API.WindowFromPoint(0,0));
//            Win32API.STRINGBUFFER winname;
//            Win32API.GetWindowText(Win32API.WindowFromPoint(0,0),out winname,256);
//            Win32API.nCmdShow nCmdShow_parant;
//            long max=Win32API.ShowWindow(Win32API.WindowFromPoint(0,0),SW_MAXIMIZE);
//            if (max==0)
//                Console.WriteLine(winname.szText+"windows MAX is Failed!");
//            else
//                Console.WriteLine(winname.szText+"windows MAX is Successful!");

//            缩定桌面
//            long result=Win32API.EnableWindow(Win32API.GetDesktopWindow(),0);
//            if (result==0)
//                Console.WriteLine("Lock Success!");
//            else
//                Console.WriteLine("Lock Failed!");
        }
    }
}