如何使用C#移动鼠标光标？

Question

我想每 x 秒模拟一次鼠标移动。为此，我将使用计时器（x 秒），当计时器滴答作响时，我将移动鼠标。

但是，如何使用 C# 使鼠标光标移动呢？

Answer 1

看一下 Cursor.Position 属性。它应该让你开始。

private void MoveCursor()
{
   // Set the Current cursor, move the cursor's Position,
   // and set its clipping rectangle to the form. 

   this.Cursor = new Cursor(Cursor.Current.Handle);
   Cursor.Position = new Point(Cursor.Position.X - 50, Cursor.Position.Y - 50);
   Cursor.Clip = new Rectangle(this.Location, this.Size);
}

Answer 2

首先添加一个名为 Win32.cs 的类，

public class Win32
{ 
    [DllImport("User32.Dll")]
    public static extern long SetCursorPos(int x, int y);

    [DllImport("User32.Dll")]
    public static extern bool ClientToScreen(IntPtr hWnd, ref POINT point);

    [StructLayout(LayoutKind.Sequential)]
    public struct POINT
    {
        public int x;
        public int y;

        public POINT(int X, int Y)
        {
            x = X;
            y = Y;
        }
    }
}

然后您可以像这样使用它：

Win32.POINT p = new Win32.POINT(xPos, yPos);

Win32.ClientToScreen(this.Handle, ref p);
Win32.SetCursorPos(p.x, p.y);

Answer 3

如果有人想知道 - 它对屏幕保护程序没有帮助，但如果您仍然需要它（我工作的公司出于某种原因计算“活动计算机时间”，所以我决定向他们展示）这里是如何做到这一点.net 8 控制台应用程序（不需要 winforms 不需要 wpf，支持 dpi 缩放）。
程序.cs：

using System.Drawing;
using System.Runtime.InteropServices;
using MouseMover;

var screenSize = DisplayTools.GetCurrentDisplaySize();//DisplayTools.GetVirtualDisplaySize();
Console.WriteLine($"ScreenWidth = {screenSize.Width} ScreenHeight = {screenSize.Height}"); //return;
Console.WriteLine("Starting movement...");

var timer = new System.Timers.Timer(2000);
var change = new Point(1, 1);

timer.Elapsed += (o, e) =>
{
    var point = new Point();
    GetCursorPos(ref point);
    Console.Write($"X = {point.X} Y = {point.Y}");
    var newX = point.X + change.X;
    var newY = point.Y + change.Y;
    if(newX >= screenSize.Width || newX < 0)
        change.X *= -1;
    if (newY >= screenSize.Height|| newY < 0)
        change.Y *= -1;
    SetCursorPos(point.X + change.X, point.Y + change.Y);
    Console.WriteLine($" moved to X = {point.X + change.X} Y = {point.Y + change.Y}");
};

timer.AutoReset = true;
timer.Enabled = true;
Console.WriteLine("(press any key to stop)");
Console.ReadKey();
timer.Stop();
timer.Dispose();
Console.WriteLine("Stopped");


[DllImport("user32.dll")]
static extern bool GetCursorPos(ref Point point);

[DllImport("user32.dll")]
static extern bool SetCursorPos(int X, int Y);

显示工具.cs：

using System.Drawing;
using System.Runtime.InteropServices;

namespace MouseMover;

static class DisplayTools
{

    [DllImport("gdi32.dll")]
    static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
    private enum DeviceCap
    {
        VERTRES = 10,
        HORZRES = 8,
        DESKTOPVERTRES = 117,
        DESKTOPHORIZRES = 118,

        // http://pinvoke.net/default.aspx/gdi32/GetDeviceCaps.html
    }

    public static Size GetCurrentDisplaySize()
    {
        using Graphics g = Graphics.FromHwnd(IntPtr.Zero);
        IntPtr desktop = g.GetHdc();
        int LogicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.VERTRES);
        int PhysicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPVERTRES);
        int LogicalScreenWidth = GetDeviceCaps(desktop, (int)DeviceCap.HORZRES);
        int PhysicalScreenWidth = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPHORIZRES);

        g.ReleaseHdc(desktop);

        return new Size(LogicalScreenWidth, LogicalScreenHeight);

    }

    private enum SystemMetric
    {
        VirtualScreenWidth = 78,
        VirtualScreenHeight = 79
    }

    [DllImport("user32.dll")]
    static extern int GetSystemMetrics(SystemMetric systemMetric);

    public static Size GetVirtualDisplaySize()
    {
        var width = GetSystemMetrics(SystemMetric.VirtualScreenWidth);
        var height = GetSystemMetrics(SystemMetric.VirtualScreenWidth);

        return new Size(width, height);
    }

}