C#设置热键隐藏指定窗口的代码详解编程语言

C#设置热键隐藏指定窗口的代码

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]; 
} 
} 
} 
}