c# 安装局部鼠标钩子 张宇轩

#region 安装局部鼠标钩子 开始调用InstallHook() 并在load事件中加载 OnMouseActivity += new MouseEventHandler(hook_MainMouseMove);//添加鼠标钩子事件
//安装钩子
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
public static extern IntPtr SetWindowsHookEx(WH_Codes idHook, HookProc lpfn, IntPtr pInstance, int threadId);

//卸载钩子
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
public static extern bool UnhookWindowsHookEx(IntPtr pHookHandle);

//传递钩子
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(IntPtr pHookHandle, int nCode, Int32 wParam, IntPtr lParam);

//获取当前鼠标位置
[DllImport("user32.dll")]
public extern static int GetCursorPos(ref POINT lpPoint);

[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public int X;
public int Y;

}
/// 钩子委托声明
public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);

/// 无返回委托声明
public delegate void VoidCallback();

public enum WH_Codes : int
{
/// <summary>
/// 底层鼠标钩子
/// </summary>
WH_MOUSE_LL = 7
}

// 添加
public event MouseEventHandler OnMouseActivity;
public enum WM_MOUSE : int
{
/// <summary>
/// 鼠标开始
/// </summary>
WM_MOUSEFIRST = 0x200,

/// <summary>
/// 鼠标移动
/// </summary>
WM_MOUSEMOVE = 0x200,

/// <summary>
/// 左键按下
/// </summary>
WM_LBUTTONDOWN = 0x201,

/// <summary>
/// 左键释放
/// </summary>
WM_LBUTTONUP = 0x202,

/// <summary>
/// 左键双击
/// </summary>
WM_LBUTTONDBLCLK = 0x203,

/// <summary>
/// 右键按下
/// </summary>
WM_RBUTTONDOWN = 0x204,

/// <summary>
/// 右键释放
/// </summary>
WM_RBUTTONUP = 0x205,

/// <summary>
/// 右键双击
/// </summary>
WM_RBUTTONDBLCLK = 0x206,

/// <summary>
/// 中键按下
/// </summary>
WM_MBUTTONDOWN = 0x207,

/// <summary>
/// 中键释放
/// </summary>
WM_MBUTTONUP = 0x208,

/// <summary>
/// 中键双击
/// </summary>
WM_MBUTTONDBLCLK = 0x209,

/// <summary>
/// 滚轮滚动
/// </summary>
/// <remarks>WINNT4.0以上才支持此消息</remarks>
WM_MOUSEWHEEL = 0x020A
}

/// 鼠标钩子句柄
private IntPtr m_pMouseHook = IntPtr.Zero;

/// 鼠标钩子委托实例
private HookProc m_MouseHookProcedure;

[DllImport("kernel32.dll")]
public static extern int GetCurrentThreadId();

#region 鼠标钩子事件结构定义
[StructLayout(LayoutKind.Sequential)]
public struct MouseHookStruct
{
public POINT Point;
public UInt32 MouseData;
public UInt32 Flags;
public UInt32 Time;
public UInt32 ExtraInfo;
}
#endregion

#region 钩子处理函数
private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if ((nCode >= 0) && (OnMouseActivity != null))
{
MouseHookStruct mouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
MouseButtons button = MouseButtons.None;
short mouseDelta = 0;
switch (wParam)
{
case (int)WM_MOUSE.WM_LBUTTONDOWN:
button = MouseButtons.Left;
break;
case (int)WM_MOUSE.WM_RBUTTONDOWN:
button = MouseButtons.Right;
break;
case (int)WM_MOUSE.WM_MOUSEWHEEL:

mouseDelta = (short)((mouseHookStruct.MouseData >> 16) & 0xffff);

break;
}

//double clicks
int clickCount = 0;
if (button != MouseButtons.None)
if (wParam == (int)WM_MOUSE.WM_LBUTTONDBLCLK || wParam == (int)WM_MOUSE.WM_RBUTTONDBLCLK) clickCount = 2;
else clickCount = 1;

//generate event
MouseEventArgs e = new MouseEventArgs(button, clickCount, mouseHookStruct.Point.X, mouseHookStruct.Point.Y, mouseDelta);
//raise it
OnMouseActivity(this, e);
}
return CallNextHookEx(this.m_pMouseHook, nCode, wParam, lParam);
}
#endregion

#region 安装钩子
public bool InstallHook()
{
IntPtr pInstance = Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().ManifestModule);
if (this.m_pMouseHook == IntPtr.Zero)
{
m_MouseHookProcedure = new HookProc(this.MouseHookProc);
this.m_pMouseHook = SetWindowsHookEx(WH_Codes.WH_MOUSE_LL, m_MouseHookProcedure, (IntPtr)0, GetCurrentThreadId());
if (this.m_pMouseHook == IntPtr.Zero)
{
this.UnInstallHook();
return false;
}
}
return true;
}
#endregion

#region 卸载钩子
public bool UnInstallHook()
{
bool result = true;
if (this.m_pMouseHook != IntPtr.Zero)
{
result = (UnhookWindowsHookEx(this.m_pMouseHook) && result);
this.m_pMouseHook = IntPtr.Zero;
}

return result;
}
#endregion

#region 捕获鼠标事件
public void hook_MainMouseMove(object sender, MouseEventArgs e)
{
if (e.Clicks > 0)
{
if (gPanelAccount.Visible == true && e.X < panelLogonBack.Location.X + 197 || e.X > panelLogonBack.Location.X + 450 || e.Y > panelLogonBack.Location.Y - 79 || e.Y < panelLogonBack.Location.Y - 157)
{
gPanelAccount.Visible = false;
}

if (gPanelStart.Visible == true && e.X < 0 || e.X > 400 || e.Y < this.Size.Height - 530 || e.Y > this.Size.Height - 30)
{
gPanelStart.Visible = false;
}
}
}
#endregion

#endregion

#region 添加鼠标钩子事件
OnMouseActivity += new MouseEventHandler(hook_MainMouseMove);//添加鼠标钩子事件
#endregion