C# .NET中如何使用GetCursorPos函数？

转自：http://blog.csdn.net/wl58796351/article/details/8122003

C# .NET中如何使用GetCursorPos函数 例程

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;

namespace CursorPosition

{

public partial class frmMain : Form

{

// We need to use unmanaged code

[DllImport("user32.dll")]

// GetCursorPos() makes everything possible

static extern bool GetCursorPos(ref Point lpPoint);

// Variable we will need to count the traveled pixels

static protected long totalPixels = 0;

static protected int currX;

static protected int currY;

static protected int diffX;

static protected int diffY;

public frmMain()

{

InitializeComponent();

}

private void tmrDef_Tick(object sender, EventArgs e)

{

// New point that will be updated by the function with the current coordinates

Point defPnt = new Point();

// Call the function and pass the Point, defPnt

GetCursorPos(ref defPnt);

// Now after calling the function, defPnt contains the coordinates which we can read

lblCoordX.Text = "X = " + defPnt.X.ToString();

lblCoordY.Text = "Y = " + defPnt.Y.ToString();

// If the cursor has moved at all

if (diffX != defPnt.X | diffY != defPnt.Y)

{

// Calculate the distance of movement (in both vertical and horizontal movement)

diffX = (defPnt.X - currX);

diffY = (defPnt.Y - currY);

// The difference will be negative if the cursor was moved left or up

// and if it is so, make the number positive

if (diffX < 0)

{

diffX *= -1;

}

if (diffY < 0)

{

diffY *= -1;

}

// Add to the "pixels traveled" counter

totalPixels += diffX + diffY;

// And display inside a label

lblTravel.Text = "You have traveled " + totalPixels + " pixels";

}

// We need this to see the difference of pixels between two mouse movements

currX = defPnt.X;

currY = defPnt.Y;

}

private void btnReset_Click(object sender, EventArgs e)

{

totalPixels = 0;

}

}

}