在C# .NET Core中读取按下的键盘和鼠标的方法可以使用System.Windows.Forms命名空间中的类来实现。
首先,需要引用System.Windows.Forms命名空间,在项目中添加对System.Windows.Forms.dll的引用。然后,可以使用以下代码来实现读取键盘和鼠标的按下事件:
using System;
using System.Windows.Forms;
public class KeyboardMouseReader
{
public static void Main()
{
// 创建一个全局的键盘和鼠标钩子
using (var hook = new KeyboardMouseHook())
{
// 注册键盘和鼠标按下事件的处理方法
hook.KeyDown += Hook_KeyDown;
hook.MouseDown += Hook_MouseDown;
// 启动钩子
hook.Start();
// 运行程序直到用户按下ESC键
while (true)
{
if (Console.KeyAvailable && Console.ReadKey(true).Key == ConsoleKey.Escape)
{
break;
}
}
// 停止钩子
hook.Stop();
}
}
private static void Hook_KeyDown(object sender, KeyEventArgs e)
{
// 处理按下的键盘事件
Console.WriteLine("键盘按下:" + e.KeyCode);
}
private static void Hook_MouseDown(object sender, MouseEventArgs e)
{
// 处理鼠标按下事件
Console.WriteLine("鼠标按下:" + e.Button);
}
}
public class KeyboardMouseHook : IDisposable
{
private readonly IntPtr hookHandle;
private readonly NativeMethods.HookProc hookCallback;
public event KeyEventHandler KeyDown;
public event MouseEventHandler MouseDown;
public KeyboardMouseHook()
{
hookCallback = HookCallback;
hookHandle = SetHook(hookCallback);
}
public void Start()
{
// 启动钩子
NativeMethods.StartHook(hookHandle);
}
public void Stop()
{
// 停止钩子
NativeMethods.StopHook(hookHandle);
}
private IntPtr SetHook(NativeMethods.HookProc proc)
{
using (var curProcess = System.Diagnostics.Process.GetCurrentProcess())
using (var curModule = curProcess.MainModule)
{
// 安装钩子
return NativeMethods.SetWindowsHookEx(
NativeMethods.WH_KEYBOARD_LL,
proc,
NativeMethods.GetModuleHandle(curModule.ModuleName),
0);
}
}
private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
var eventType = (NativeMethods.WindowMessage)wParam;
if (eventType == NativeMethods.WindowMessage.WM_KEYDOWN)
{
var vkCode = Marshal.ReadInt32(lParam);
var key = (Keys)vkCode;
// 触发键盘按下事件
KeyDown?.Invoke(this, new KeyEventArgs(key));
}
else if (eventType == NativeMethods.WindowMessage.WM_LBUTTONDOWN ||
eventType == NativeMethods.WindowMessage.WM_RBUTTONDOWN ||
eventType == NativeMethods.WindowMessage.WM_MBUTTONDOWN)
{
var button = GetMouseButtonFromEventType(eventType);
// 触发鼠标按下事件
MouseDown?.Invoke(this, new MouseEventArgs(button, 0, 0, 0, 0));
}
}
// 继续执行下一个钩子
return NativeMethods.CallNextHookEx(hookHandle, nCode, wParam, lParam);
}
private MouseButtons GetMouseButtonFromEventType(NativeMethods.WindowMessage eventType)
{
switch (eventType)
{
case NativeMethods.WindowMessage.WM_LBUTTONDOWN:
return MouseButtons.Left;
case NativeMethods.WindowMessage.WM_RBUTTONDOWN:
return MouseButtons.Right;
case NativeMethods.WindowMessage.WM_MBUTTONDOWN:
return MouseButtons.Middle;
default:
throw new ArgumentOutOfRangeException(nameof(eventType), eventType, null);
}
}
public void Dispose()
{
// 卸载钩子
NativeMethods.UnhookWindowsHookEx(hookHandle);
}
}
public static class NativeMethods
{
public const int WH_KEYBOARD_LL = 13;
public enum WindowMessage : uint
{
WM_KEYDOWN = 0x0100,
WM_LBUTTONDOWN = 0x0201,
WM_RBUTTONDOWN = 0x0204,
WM_MBUTTONDOWN = 0x0207
}
public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("user32.dll")]
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
[DllImport("user32.dll")]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
[DllImport("kernel32.dll")]
public static extern uint GetCurrentThreadId();
[DllImport("user32.dll")]
public static extern IntPtr SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll")]
public static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach);
[DllImport("user32.dll")]
public static extern IntPtr GetFocus();
[DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
public static void StartHook(IntPtr hookHandle)
{
ShowWindow(GetForegroundWindow(), 2);
uint currentThreadId = GetCurrentThreadId();
uint foregroundThreadId = GetWindowThreadProcessId(GetForegroundWindow(), out var _);
if (currentThreadId != foregroundThreadId)
{
AttachThreadInput(currentThreadId, foregroundThreadId, true);
}
SetForegroundWindow(hookHandle);
if (currentThreadId != foregroundThreadId)
{
AttachThreadInput(currentThreadId, foregroundThreadId, false);
}
SetForegroundWindow(GetFocus());
}
public static void StopHook(IntPtr hookHandle)
{
ShowWindow(GetForegroundWindow(), 1);
SetForegroundWindow(hookHandle);
}
}
这段代码会监听键盘和鼠标的按下事件,并在控制台中打印出按下的按键或鼠标按钮。可以根据需求对事件进行进一步处理。
此外,C# .NET Core还有其他方式可以读取键盘和鼠标的输入,例如使用WindowsAPI函数来监听原始输入,或者使用第三方库如InputSimulator等。具体选择何种方法取决于项目需求和开发偏好。
注意:在使用键盘和鼠标钩子的时候,请确保以管理员身份运行程序,否则可能会无法捕捉系统级别的按键事件。
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