C#打造机械耳感键盘（全局监听键盘并设置音效）

很多小盆友表示买不起机械键盘，甚至买不起机械手感键盘，一直在用笔记本自带的键盘。那么如何改造成机械键盘？废话不多说，上代码。
1.首先写一个全局监听键盘的类，主要是利用勾子实现。

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;namespace KeyboardMusic
{class KeyBoardHook{//需要绑定的事件public event KeyEventHandler KeyUpEvent;public event KeyEventHandler KeyDownEvent;public event KeyPressEventHandler KeyPressEvent;public delegate int HookProc(int nCode, int wParam, IntPtr lParam);static int hKeyboardHook = 0; //声明键盘钩子处理的初始值public const int WH_KEYBOARD_LL = 13;//全局键盘监听鼠标消息为13HookProc KeyboardHookProcedure;[StructLayout(LayoutKind.Sequential)]public class KeyboardHookStruct{public int vkCode;  public int scanCode;public int flags; public int time;public int dwExtraInfo;}//安装钩子[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);//卸载钩子[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern bool UnhookWindowsHookEx(int idHook);//传递钩子[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]public static extern int CallNextHookEx(int idHook, int nCode, Int32 wParam, IntPtr lParam);// 取得当前线程编号[DllImport("kernel32.dll")]static extern int GetCurrentThreadId();//防止钩子失效[DllImport("kernel32.dll")]public static extern IntPtr GetModuleHandle(string name);public void Start(){// 安装键盘钩子if (hKeyboardHook == 0){KeyboardHookProcedure = new HookProc(KeyboardHookProc);hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardHookProcedure, GetModuleHandle(System.Diagnostics.Process.GetCurrentProcess().MainModule.ModuleName), 0);if (hKeyboardHook == 0){Stop();throw new Exception("安装失败");}}}public void Stop(){bool retKeyboard = true;if (hKeyboardHook != 0){retKeyboard = UnhookWindowsHookEx(hKeyboardHook);hKeyboardHook = 0;}if (!(retKeyboard)) throw new Exception("卸载钩子失败！");}//ToAscii职能的转换指定的虚拟键码和键盘状态的相应字符或字符[DllImport("user32")]public static extern int ToAscii(int uVirtKey, //[in] 指定虚拟关键代码进行翻译。int uScanCode, // [in] 指定的硬件扫描码的关键须翻译成英文。高阶位的这个值设定的关键，如果是（不压）byte[] lpbKeyState, // [in] 指针，以256字节数组，包含当前键盘的状态。每个元素（字节）的数组包含状态的一个关键。如果高阶位的字节是一套，关键是下跌（按下）。在低比特，如果设置表明，关键是对切换。在此功能，只有肘位的CAPS LOCK键是相关的。在切换状态的NUM个锁和滚动锁定键被忽略。byte[] lpwTransKey, // [out] 指针的缓冲区收到翻译字符或字符。int fuState); // [in] Specifies whether a menu is active. This parameter must be 1 if a menu is active, or 0 otherwise.//获取按键的状态[DllImport("user32")]public static extern int GetKeyboardState(byte[] pbKeyState);[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]private static extern short GetKeyState(int vKey);private const int WM_KEYDOWN = 0x100;//KEYDOWNprivate const int WM_KEYUP = 0x101;//KEYUPprivate const int WM_SYSKEYDOWN = 0x104;//SYSKEYDOWNprivate const int WM_SYSKEYUP = 0x105;//SYSKEYUPprivate int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam){// 侦听键盘事件if ((nCode >= 0) && (KeyDownEvent != null || KeyUpEvent != null || KeyPressEvent != null)){KeyboardHookStruct MyKeyboardHookStruct = (KeyboardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyboardHookStruct));// 键盘按下if (KeyDownEvent != null && (wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN)){Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;KeyEventArgs e = new KeyEventArgs(keyData);KeyDownEvent(this, e);}//键盘按着if (KeyPressEvent != null && wParam == WM_KEYDOWN){byte[] keyState = new byte[256];GetKeyboardState(keyState);byte[] inBuffer = new byte[2];if (ToAscii(MyKeyboardHookStruct.vkCode, MyKeyboardHookStruct.scanCode, keyState, inBuffer, MyKeyboardHookStruct.flags) == 1){KeyPressEventArgs e = new KeyPressEventArgs((char)inBuffer[0]);KeyPressEvent(this, e);}}// 键盘抬起if (KeyUpEvent != null && (wParam == WM_KEYUP || wParam == WM_SYSKEYUP)){Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;KeyEventArgs e = new KeyEventArgs(keyData);KeyUpEvent(this, e);}}return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);}~KeyBoardHook(){Stop();}}
}

2.在form_load事件中调用这个类安装钩子，并且注册事件

KeyBoardHook k_hook = new KeyBoardHook();
k_hook.KeyDownEvent += new KeyEventHandler(hook_KeyDown);//钩住键按下
k_hook.KeyUpEvent += new KeyEventHandler(hook_KeyUp);//钩住键按下
k_hook.Start();//安装键盘钩子

3.自己想办法搞一个机械键盘的音效去，注意必须是两个wav文件，一个是按下，一个是抬起

private void hook_KeyDown(object sender, KeyEventArgs e)
{//单独键盘按键//string keyCode = e.KeyCode.ToString();string m = Application.StartupPath.Replace(@"\", @"/") + @"/wav/mechanicalKeyboard_down.wav";using (System.Media.SoundPlayer sndPlayer = new System.Media.SoundPlayer(m)){sndPlayer.Play();}
}
private void hook_KeyUp(object sender, KeyEventArgs e)
{string m = Application.StartupPath.Replace(@"\", @"/") + @"/wav/mechanicalKeyboard_up.wav";using (System.Media.SoundPlayer sndPlayer = new System.Media.SoundPlayer(m)){sndPlayer.Play();}
}

4.这样就可以实现机械耳感键盘啦，如果你有兴趣，可以通过e.KeyCode获取你按下的具体数值按键，进而设置不同的音效，本人就搞了一个，他会说出你按下的键，像极了计算器，非常沙雕。。。

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C#打造机械耳感键盘（全局监听键盘并设置音效）

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