C winform鍵盤鉤子

新建乙個工程csharpkeyboardhook，在winform窗體上拉乙個lable（用於顯示，按下的是那個鍵）和兩個button（用於開關勾子）

下面是c#winform鍵盤勾子的**，照搬上去就可以的啦：

一、新建乙個類檔案keyboardhooklib，**如下所示：

using system;

using system.collections.generic;
using system.text;
using system.runtime.interopservices;
using system.reflection;
using system.diagnostics;
using microsoft.win32;
using system.windows.forms;
namespace csharpkeyboardhook
//設定鉤子
[dllimport("user32.dll")]
private static extern int setwindowshookex(int idhook, hookhandle lpfn, intptr hinstance, int threadid);
//取消鉤子
[dllimport("user32.dll", charset = charset.auto, callingconvention = callingconvention.stdcall)]
private static extern bool unhookwindowshookex(int idhook);
//呼叫下乙個鉤子
[dllimport("user32.dll")]
private static extern int callnexthookex(int idhook, int ncode, int wparam, intptr lparam);
//獲取當前執行緒id
[dllimport("kernel32.dll")]
private static extern int getcurrentthreadid();
//gets the main module for the associated process.
[dllimport("kernel32.dll")]
private static extern intptr getmodulehandle(string name);
private intptr _hookwindowptr = intptr.zero;
//構造器
public keyboardhooklib() 
//外部呼叫的鍵盤處理事件
private static processkeyhandle _clientmethod = null;
/// /// 安裝勾子
/// 
/// 外部呼叫的鍵盤處理事件
public void installhook(processkeyhandle clientmethod)
}//取消鉤子事件
public void uninstallhook()
}//鉤子事件內部呼叫,呼叫_clientmethod方法**到客戶端應用。
private static int gethookproc(int ncode, int wparam, intptr lparam)
}return callnexthookex(_hhookvalue, ncode, wparam, lparam);}}
}

/////

介面事件**

using system;

using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.text;
using system.windows.forms;
using system.runtime.interopservices;
using system.reflection;
using system.diagnostics;
using microsoft.win32;
namespace csharpkeyboardhook
private void button1_click(object sender, eventargs e)
private void button2_click(object sender, eventargs e)
/// /// 客戶端鍵盤捕捉事件.
/// 
/// 由hook程式傳送的按鍵資訊
/// 是否攔截
public void keypress(keyboardhooklib.hookstruct hookstruct, out bool handle)
if (hookstruct.vkcode == 92)// 截獲右win
//截獲ctrl+esc
if (hookstruct.vkcode == (int)keys.escape && (int)control.modifierkeys == (int)keys.control)
//截獲alt+f4
if (hookstruct.vkcode == (int)keys.f4 && (int)control.modifierkeys == (int)keys.alt)
//截獲alt+tab
if (hookstruct.vkcode == (int)keys.tab && (int)control.modifierkeys == (int)keys.alt)
//截獲f1
if (hookstruct.vkcode == (int)keys.f1)
//截獲ctrl+alt+delete
if ((int)control.modifierkeys == (int)keys.control + (int)keys.alt + (int)keys.delete)
//如果鍵a~z
if (hookstruct.vkcode >= (int)keys.a && hookstruct.vkcode <= (int)keys.z)
keys key = (keys)hookstruct.vkcode;
label1.text = "你按下:" + (key == keys.none ? "" : key.tostring());}}
}

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