在VS2005的C# Winform程序里安装“全局钩子”失败的问题
这个程序是别人给我的，我用VS2005运行报错，提示
“安装失败！SetWindowsHookEx failed.”
据说是VS2005安全机制的问题，谁能帮我解决问题
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Reflection;
namespace HookProj
{
/// <summary>
/// KeyboardHookForm 的摘要说明。
/// </summary>
public class KeyboardHookForm : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.TextBox textBox1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public KeyboardHookForm()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(24, 8);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "安装";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Enabled = false;
this.button2.Location = new System.Drawing.Point(192, 8);
this.button2.Name = "button2";
this.button2.TabIndex = 1;
this.button2.Text = "卸载";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(16, 40);
this.textBox1.Multiline = true;
this.textBox1.Name = "textBox1";
this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
this.textBox1.Size = new System.Drawing.Size(264, 112);
this.textBox1.TabIndex = 2;
this.textBox1.Text = "";
//
// KeyboardHookForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 166);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Name = "KeyboardHookForm";
this.Text = "键盘钩子";
this.Closing += new System.ComponentModel.CancelEventHandler(this.KeyboardHookForm_Closing);
this.ResumeLayout(false);
}
#endregion
private void button1_Click(object sender, System.EventArgs e)
{
try
{
HookStart();
MessageBox.Show("安装成功");
this.button1.Enabled=false;
this.button2.Enabled=true;
}
catch(Exception ex)
{
MessageBox.Show("安装失败！"+ex.Message);
}
}
private void button2_Click(object sender, System.EventArgs e)
{
try
{
HookStop();
MessageBox.Show("卸载成功");
this.button1.Enabled=true;
this.button2.Enabled=false;
}
catch(Exception ex)
{
MessageBox.Show("卸载失败！"+ex.Message);
}
}
private void KeyboardHookForm_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
try
{
HookStop();
this.button1.Enabled=true;
this.button2.Enabled=false;
}
catch(Exception ex)
{
MessageBox.Show("卸载失败！"+ex.Message);
}
}
//*************************键盘钩子代码*******************************************************************************************************
//定义变量
public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);
static int hKeyboardHook = 0;
HookProc KeyboardHookProcedure;
/*************************
* 声明API函数
* ***********************/
// 安装钩子 （using System.Runtime.InteropServices;）
[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);
// 继续下一个钩子
[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（线程钩子需要用到）
[DllImport("kernel32.dll")]
static extern int GetCurrentThreadId();
//钩子子程：就是钩子所要做的事情
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if (nCode >= 0)
{
if(wParam == 0x100)
{
KeyMSG m = (KeyMSG) Marshal.PtrToStructure(lParam, typeof(KeyMSG));//键盘
this.textBox1.AppendText(((char)m.vkCode).ToString()+"======="+m.time.ToString()+"===\r\n");
}
return 0;//如果返回1，则结束消息，这个消息到此为止，不再传递。如果返回0或调用CallNextHookEx函数则消息出了这个钩子继续往下传递，也就是传给消息真正的接受者
}
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
//键盘结构
public struct KeyMSG
{
public int vkCode; //键值
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
// 安装钩子
public void HookStart()
{
if(hKeyboardHook == 0)
{
// 创建HookProc实例
KeyboardHookProcedure = new HookProc(KeyboardHookProc);
// 设置线程钩子
hKeyboardHook = SetWindowsHookEx( 13,KeyboardHookProcedure,Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]),0);
// 如果设置钩子失败
if(hKeyboardHook == 0 )
{
HookStop();
throw new Exception("SetWindowsHookEx failed.");
}
}
}
// 卸载钩子
public void HookStop()
{
bool retKeyboard = true;
if(hKeyboardHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = 0;
}
if (!( retKeyboard))
throw new Exception("UnhookWindowsHookEx failed.");
}
//********************************************************************************************************************************
}
}
[解决办法]
一般是用C++写一个Dll，通过C#调用
不通过DLL没有办法注入到其它进程，只对你本身有效果。
