C#实现老板键功能的代码
投稿：hebedich
最近在做项目中遇到需要增加个老板键功能,找一惯的方式,开始从网络下手寻找: 关键字类似”C# 老板键“,一搜,一堆又一堆,然而出来的代码大多数都不是太合适，下面给大家分享下自己的解决方案已经一个网友的解决方案，有需要的小伙伴可以参考下。
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];
}
}
}
}
再给大家分享一个其他网友的方法，也非常不错，详情请看注释。
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace drmaple
{
class HotKey
{
//如果函数执行成功，返回值不为0。
//如果函数执行失败，返回值为0。要得到扩展错误信息，调用GetLastError。
[DllImport("user32.dll", SetLastError = true)]
public static extern bool RegisterHotKey(
IntPtr hWnd, //要定义热键的窗口的句柄
int id, //定义热键ID（不能与其它ID重复）
KeyModifiers fsModifiers, //标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效
Keys vk //定义热键的内容
);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(
IntPtr hWnd, //要取消热键的窗口的句柄
int id //要取消热键的ID
);
//定义了辅助键的名称（将数字转变为字符以便于记忆，也可去除此枚举而直接使用数值）
[Flags()]
public enum KeyModifiers
{
None = 0,
Alt = 1,
Ctrl = 2,
Shift = 4,
WindowsKey = 8
}
}
}
//简单说明一下：
//“public static extern bool RegisterHotKey()”这个函数用于注册热键。由于这个函数需要引用user32.dll动态链接库后才能使用，并且
//user32.dll是非托管代码，不能用命名空间的方式直接引用，所以需要用“DllImport”进行引入后才能使用。于是在函数前面需要加上
//“[DllImport("user32.dll", SetLastError = true)]”这行语句。
//“public static extern bool UnregisterHotKey()”这个函数用于注销热键，同理也需要用DllImport引用user32.dll后才能使用。
//“public enum KeyModifiers{}”定义了一组枚举，将辅助键的数字代码直接表示为文字，以方便使用。这样在调用时我们不必记住每一个辅
//助键的代码而只需直接选择其名称即可。
//（2）以窗体FormA为例，介绍HotKey类的使用
//在FormA的Activate事件中注册热键，本例中注册Shift+S，Ctrl+Z，Alt+D这三个热键。这里的Id号可任意设置，但要保证不被重复。
private void Form_Activated(object sender, EventArgs e)
{
//注册热键Shift+S，Id号为100。HotKey.KeyModifiers.Shift也可以直接使用数字4来表示。
HotKey.RegisterHotKey(Handle, 100, HotKey.KeyModifiers.Shift, Keys.S);
//注册热键Ctrl+B，Id号为101。HotKey.KeyModifiers.Ctrl也可以直接使用数字2来表示。
HotKey.RegisterHotKey(Handle, 101, HotKey.KeyModifiers.Ctrl, Keys.B);
//注册热键Alt+D，Id号为102。HotKey.KeyModifiers.Alt也可以直接使用数字1来表示。
HotKey.RegisterHotKey(Handle, 102, HotKey.KeyModifiers.Alt, Keys.D);
}
//在FormA的Leave事件中注销热键。
private void FrmSale_Leave(object sender, EventArgs e)
{
//注销Id号为100的热键设定
HotKey.UnregisterHotKey(Handle, 100);
//注销Id号为101的热键设定
HotKey.UnregisterHotKey(Handle, 101);
//注销Id号为102的热键设定
HotKey.UnregisterHotKey(Handle, 102);
}
重载FromA中的WndProc函数
///
/// 监视Windows消息
/// 重载WndProc方法，用于实现热键响应
///
///
protected override void WndProc(ref Message m)
{
const int WM_HOTKEY = 0x0312;
//按快捷键
switch (m.Msg)
{
case WM_HOTKEY:
switch (m.WParam.ToInt32())
{
case 100: //按下的是Shift+S
//此处填写快捷键响应代码
break;
case 101: //按下的是Ctrl+B
//此处填写快捷键响应代码
break;
case 102: //按下的是Alt+D
//此处填写快捷键响应代码
break;
}
break;
}
base.WndProc(ref m);
}
以上所述就是本文的全部内容了，希望对大家学习C#能够有所帮助。