using System;using System.Text;using System.Collections;using System.Runtime.InteropServices; namespace WindowHider{  /// <summary>  /// Object used to control a Windows Form.  /// </summary>  public class Window  {    /// <summary>    /// Win32 API Imports    /// </summary>    [DllImport("user32.dll")] private static extern       bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);    [DllImport("user32.dll")] private static extern       bool SetForegroundWindow(IntPtr hWnd);    [DllImport("user32.dll")] private static extern       bool IsIconic(IntPtr hWnd);    [DllImport("user32.dll")] private static extern       bool IsZoomed(IntPtr hWnd);    [DllImport("user32.dll")] private static extern       IntPtr GetForegroundWindow();    [DllImport("user32.dll")] private static extern       IntPtr GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId);    [DllImport("user32.dll")] private static extern       IntPtr AttachThreadInput(IntPtr idAttach, IntPtr idAttachTo, int fAttach);     /// <summary>    /// Win32 API Constants for ShowWindowAsync()    /// </summary>    private const int SW_HIDE = 0;    private const int SW_SHOWNORMAL = 1;    private const int SW_SHOWMINIMIZED = 2;    private const int SW_SHOWMAXIMIZED = 3;    private const int SW_SHOWNOACTIVATE = 4;    private const int SW_RESTORE = 9;    private const int SW_SHOWDEFAULT = 10;     /// <summary>    /// Private Fields    /// </summary>    private IntPtr m_hWnd;    private string m_Title;    private bool m_Visible = true;    private string m_Process;    private bool m_WasMax = false;     /// <summary>    /// Window Object's Public Properties    /// </summary>    public IntPtr hWnd    {      get{return m_hWnd;}    }    public string Title    {      get{return m_Title;}    }    public string Process    {      get{return m_Process;}    }     /// <summary>    /// Sets this Window Object's visibility    /// </summary>    public bool Visible    {      get{return m_Visible;}      set      {        //show the window        if(value == true)        {          if(m_WasMax)          {            if(ShowWindowAsync(m_hWnd,SW_SHOWMAXIMIZED))              m_Visible = true;          }          else          {            if(ShowWindowAsync(m_hWnd,SW_SHOWNORMAL))              m_Visible = true;          }        }        //hide the window        if(value == false)        {          m_WasMax = IsZoomed(m_hWnd);          if(ShowWindowAsync(m_hWnd,SW_HIDE))            m_Visible = false;        }      }    }     /// <summary>    /// Constructs a Window Object    /// </summary>    /// <param name="Title">Title Caption</param>    /// <param name="hWnd">Handle</param>    /// <param name="Process">Owning Process</param>    public Window(string Title, IntPtr hWnd, string Process)    {      m_Title = Title;      m_hWnd = hWnd;      m_Process = Process;    }     //Override ToString()     public override string ToString()    {      //return the title if it has one, if not return the process name      if (m_Title.Length > 0)      {        return m_Title;      }      else      {        return m_Process;      }    }     /// <summary>    /// Sets focus to this Window Object    /// </summary>    public void Activate()    {      if(m_hWnd == GetForegroundWindow())        return;       IntPtr ThreadID1 = GetWindowThreadProcessId(GetForegroundWindow(),                            IntPtr.Zero);      IntPtr ThreadID2 = GetWindowThreadProcessId(m_hWnd,IntPtr.Zero);             if (ThreadID1 != ThreadID2)      {        AttachThreadInput(ThreadID1,ThreadID2,1);        SetForegroundWindow(m_hWnd);        AttachThreadInput(ThreadID1,ThreadID2,0);      }      else      {        SetForegroundWindow(m_hWnd);      }       if (IsIconic(m_hWnd))      {        ShowWindowAsync(m_hWnd,SW_RESTORE);      }      else      {        ShowWindowAsync(m_hWnd,SW_SHOWNORMAL);      }    }  }   /// <summary>  /// Collection used to enumerate Window Objects  /// </summary>  public class Windows : IEnumerable, IEnumerator  {    /// <summary>    /// Win32 API Imports    /// </summary>    [DllImport("user32.dll")] private static extern        int GetWindowText(int hWnd, StringBuilder title, int size);    [DllImport("user32.dll")] private static extern        int GetWindowModuleFileName(int hWnd, StringBuilder title, int size);    [DllImport("user32.dll")] private static extern        int EnumWindows(EnumWindowsProc ewp, int lParam);     [DllImport("user32.dll")] private static extern        bool IsWindowVisible(int hWnd);     //delegate used for EnumWindows() callback function    public delegate bool EnumWindowsProc(int hWnd, int lParam);     private int m_Position = -1; // holds current index of wndArray,                    // necessary for IEnumerable         ArrayList wndArray = new ArrayList(); //array of windows         //Object's private fields    private bool m_invisible = false;    private bool m_notitle = false;     /// <summary>    /// Collection Constructor with additional options    /// </summary>    /// <param name="Invisible">Include invisible Windows</param>    /// <param name="Untitled">Include untitled Windows</param>    public Windows(bool Invisible, bool Untitled)    {      m_invisible = Invisible;      m_notitle = Untitled;       //Declare a callback delegate for EnumWindows() API call      EnumWindowsProc ewp = new EnumWindowsProc(EvalWindow);      //Enumerate all Windows      EnumWindows(ewp, 0);    }    /// <summary>    /// Collection Constructor    /// </summary>    public Windows()    {      //Declare a callback delegate for EnumWindows() API call      EnumWindowsProc ewp = new EnumWindowsProc(EvalWindow);      //Enumerate all Windows      EnumWindows(ewp, 0);    }    //EnumWindows CALLBACK function    private bool EvalWindow(int hWnd, int lParam)    {      if (m_invisible == false && !IsWindowVisible(hWnd))        return(true);       StringBuilder title = new StringBuilder(256);      StringBuilder module = new StringBuilder(256);       GetWindowModuleFileName(hWnd, module, 256);      GetWindowText(hWnd, title, 256);       if (m_notitle == false && title.Length == 0)        return(true);       wndArray.Add(new Window(title.ToString(), (IntPtr)hWnd,                   module.ToString()));       return(true);    }         //implement IEnumerable    public IEnumerator GetEnumerator()    {      return (IEnumerator)this;    }    //implement IEnumerator    public bool MoveNext()    {      m_Position++;      if (m_Position < wndArray.Count){return true;}else{return false;}}public void Reset(){m_Position = -1;}public object Current{get{return wndArray[m_Position];}}}}

using System;using System.Collections.Generic;using System.Runtime.InteropServices;using System.Windows.Forms;namespace drmaple{  class HotKey  {    //如果函數執行成功，返回值不為0。    //如果函數執行失敗，返回值為0。要得到擴展錯誤信息，調用GetLastError。    [DllImport("user32.dll", SetLastError = true)]    public static extern bool RegisterHotKey(            IntPtr hWnd,        //要定義熱鍵的窗口的句柄      int id,           //定義熱鍵ID（不能與其它ID重復）      KeyModifiers fsModifiers,  //標識熱鍵是否在按Alt、Ctrl、Shift、Windows等鍵時才會生效      Keys vk           //定義熱鍵的內容      );    [DllImport("user32.dll", SetLastError = true)]    public static extern bool UnregisterHotKey(      IntPtr hWnd,        //要取消熱鍵的窗口的句柄      int id           //要取消熱鍵的ID      );    //定義了輔助鍵的名稱（將數字轉變為字符以便于記憶，也可去除此枚舉而直接使用數值）    [Flags()]    public enum KeyModifiers    {      None = 0,      Alt = 1,      Ctrl = 2,      Shift = 4,      WindowsKey = 8    }  }}//簡單說明一下：//“public static extern bool RegisterHotKey()”這個函數用于注冊熱鍵。由于這個函數需要引用user32.dll動態鏈接庫后才能使用，并且//user32.dll是非托管代碼，不能用命名空間的方式直接引用，所以需要用“DllImport”進行引入后才能使用。于是在函數前面需要加上//“[DllImport("user32.dll", SetLastError = true)]”這行語句。//“public static extern bool UnregisterHotKey()”這個函數用于注銷熱鍵，同理也需要用DllImport引用user32.dll后才能使用。//“public enum KeyModifiers{}”定義了一組枚舉，將輔助鍵的數字代碼直接表示為文字，以方便使用。這樣在調用時我們不必記住每一個輔//助鍵的代碼而只需直接選擇其名稱即可。//（2）以窗體FormA為例，介紹HotKey類的使用//在FormA的Activate事件中注冊熱鍵，本例中注冊Shift+S，Ctrl+Z，Alt+D這三個熱鍵。這里的Id號可任意設置，但要保證不被重復。private void Form_Activated(object sender, EventArgs e){  //注冊熱鍵Shift+S，Id號為100。HotKey.KeyModifiers.Shift也可以直接使用數字4來表示。  HotKey.RegisterHotKey(Handle, 100, HotKey.KeyModifiers.Shift, Keys.S);   //注冊熱鍵Ctrl+B，Id號為101。HotKey.KeyModifiers.Ctrl也可以直接使用數字2來表示。  HotKey.RegisterHotKey(Handle, 101, HotKey.KeyModifiers.Ctrl, Keys.B);  //注冊熱鍵Alt+D，Id號為102。HotKey.KeyModifiers.Alt也可以直接使用數字1來表示。  HotKey.RegisterHotKey(Handle, 102, HotKey.KeyModifiers.Alt, Keys.D);}//在FormA的Leave事件中注銷熱鍵。private void FrmSale_Leave(object sender, EventArgs e){  //注銷Id號為100的熱鍵設定  HotKey.UnregisterHotKey(Handle, 100);  //注銷Id號為101的熱鍵設定  HotKey.UnregisterHotKey(Handle, 101);  //注銷Id號為102的熱鍵設定  HotKey.UnregisterHotKey(Handle, 102);}重載FromA中的WndProc函數/// /// 監視Windows消息/// 重載WndProc方法，用于實現熱鍵響應/// /// protected override void WndProc(ref Message m){  const int WM_HOTKEY = 0x0312;  //按快捷鍵   switch (m.Msg)  {    case WM_HOTKEY:      switch (m.WParam.ToInt32())      {        case 100:  //按下的是Shift+S          //此處填寫快捷鍵響應代碼           break;        case 101:  //按下的是Ctrl+B          //此處填寫快捷鍵響應代碼          break;        case 102:  //按下的是Alt+D          //此處填寫快捷鍵響應代碼          break;      }    break;  }  base.WndProc(ref m);}