鼠标全局事件

1.Win32Api

public class Win32Api
{
[StructLayout(LayoutKind.Sequential)]
public class POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
public POINT pt;
public int hwnd;
public int wHitTestCode;
public int dwExtraInfo;
}
public delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam);
//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);
//调用下一个钩子
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern int CallNextHookEx(int idHook, int nCode, IntPtr wParam, IntPtr lParam);
}

Win32Api

2.MouseHook

public class MouseHook
{
private Point point;
private Point Point
{
get { return point; }
set
{
if (point != value)
{
point = value;
if (MouseMoveEvent != null)
{
var e = new MouseEventArgs(MouseButtons.None, 0, point.X, point.Y, 0);
MouseMoveEvent(this, e);
}
}
}
}
private int hHook;
private static int hMouseHook = 0;
private const int WM_MOUSEMOVE = 0x200;
private const int WM_LBUTTONDOWN = 0x201;
private const int WM_RBUTTONDOWN = 0x204;
private const int WM_MBUTTONDOWN = 0x207;
private const int WM_LBUTTONUP = 0x202;
private const int WM_RBUTTONUP = 0x205;
private const int WM_MBUTTONUP = 0x208;
private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_RBUTTONDBLCLK = 0x206;
private const int WM_MBUTTONDBLCLK = 0x209;

public const int WH_MOUSE_LL = 14;
public Win32Api.HookProc hProc;
public MouseHook()
{
this.Point = new Point();
}
public int SetHook()
{
hProc = new Win32Api.HookProc(MouseHookProc);
hHook = Win32Api.SetWindowsHookEx(WH_MOUSE_LL, hProc, IntPtr.Zero, 0);
return hHook;
}
public void UnHook()
{
Win32Api.UnhookWindowsHookEx(hHook);
}
private int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
Win32Api.MouseHookStruct MyMouseHookStruct = (Win32Api.MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(Win32Api.MouseHookStruct));
if (nCode < 0)
{
return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);
}
else
{
MouseButtons button = MouseButtons.None;
int clickCount = 0;
switch ((Int32)wParam)
{
case WM_LBUTTONDOWN:
button = MouseButtons.Left;
clickCount = 1;
MouseDownEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
case WM_RBUTTONDOWN:
button = MouseButtons.Right;
clickCount = 1;
MouseDownEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
case WM_MBUTTONDOWN:
button = MouseButtons.Middle;
clickCount = 1;
MouseDownEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
case WM_LBUTTONUP:
button = MouseButtons.Left;
clickCount = 1;
MouseUpEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
case WM_RBUTTONUP:
button = MouseButtons.Right;
clickCount = 1;
MouseUpEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
case WM_MBUTTONUP:
button = MouseButtons.Middle;
clickCount = 1;
MouseUpEvent(this, new MouseEventArgs(button, clickCount, point.X, point.Y, 0));
break;
}

this.Point = new Point(MyMouseHookStruct.pt.x, MyMouseHookStruct.pt.y);
return Win32Api.CallNextHookEx(hHook, nCode, wParam, lParam);
}
}

public delegate void MouseMoveHandler(object sender, MouseEventArgs e);
public event MouseMoveHandler MouseMoveEvent;

public delegate void MouseClickHandler(object sender, MouseEventArgs e);
public event MouseClickHandler MouseClickEvent;

public delegate void MouseDownHandler(object sender, MouseEventArgs e);
public event MouseDownHandler MouseDownEvent;

public delegate void MouseUpHandler(object sender, MouseEventArgs e);
public event MouseUpHandler MouseUpEvent;
}

MouseHook

3.调用

MouseHook mh;

private void Form1_Load(object sender, EventArgs e)
{
mh = new MouseHook();
mh.SetHook();
mh.MouseDownEvent += mh_MouseDownEvent;
mh.MouseUpEvent += mh_MouseUpEvent;
}

bool LeftTag = false;
bool RightTag = false;
Point p1 = new Point(0,0);
Point p2 = new Point(0, 0);

//按下鼠标键触发的事件
private void mh_MouseDownEvent(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
LeftTag = true;
richTextBox1.AppendText("按下了左键\n");
}
if (e.Button == MouseButtons.Right)
{
RightTag = true;
richTextBox1.AppendText("按下了右键\n");
}
p1 = e.Location;
}

//松开鼠标键触发的事件
private void mh_MouseUpEvent(object sender, MouseEventArgs e)
{
p2 = e.Location;
double value = Math.Sqrt(Math.Abs(p1.X - p2.X) * Math.Abs(p1.X - p2.X) + Math.Abs(p1.Y - p2.Y) * Math.Abs(p1.Y - p2.Y));
//if (LeftTag && RightTag && value > 100)
//{
//    MessageBox.Show("ok");
//}
if (e.Button == MouseButtons.Left)
{
richTextBox1.AppendText("松开了左键\n");
}
if (e.Button == MouseButtons.Right)
{
richTextBox1.AppendText("松开了右键\n");
}
richTextBox1.AppendText("移动了" + value + "距离\n");
RightTag = false;
LeftTag = false;
p1 = new Point(0, 0);
p2 = new Point(0, 0);
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
mh.UnHook();
}

Form1

MouseHook mh;        private void Form1_Load(object sender, EventArgs e)
        {
            mh = new MouseHook();
            mh.SetHook();
            mh.MouseDownEvent += mh_MouseDownEvent;
            mh.MouseUpEvent += mh_MouseUpEvent;
        }        bool LeftTag = false;
        bool RightTag = false;
        Point p1 = new Point(0,0);
        Point p2 = new Point(0, 0);        //按下鼠标键触发的事件
        private void mh_MouseDownEvent(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                LeftTag = true;
                richTextBox1.AppendText("按下了左键\n");
        
4000
    }
            if (e.Button == MouseButtons.Right)
            {
                RightTag = true;
                richTextBox1.AppendText("按下了右键\n");
            }
            p1 = e.Location;
        }        //松开鼠标键触发的事件
        private void mh_MouseUpEvent(object sender, MouseEventArgs e)
        {
            p2 = e.Location;
            double value = Math.Sqrt(Math.Abs(p1.X - p2.X) * Math.Abs(p1.X - p2.X) + Math.Abs(p1.Y - p2.Y) * Math.Abs(p1.Y - p2.Y));
            //if (LeftTag && RightTag && value > 100)
            //{
            //    MessageBox.Show("ok");
            //}
            if (e.Button == MouseButtons.Left)
            {
                richTextBox1.AppendText("松开了左键\n");
            }
            if (e.Button == MouseButtons.Right)
            {
                richTextBox1.AppendText("松开了右键\n");
            }
            richTextBox1.AppendText("移动了" + value + "距离\n");
            RightTag = false;
            LeftTag = false;
            p1 = new Point(0, 0);
            p2 = new Point(0, 0);
        }
        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            mh.UnHook();
        }Form1