1、添加命名空间

using System.Runtime.InteropServices;

2、添加DLL引用

/// <summary>/// 控制鼠标指针显示和隐藏/// </summary>public class MousePointer{ /// <summary> /// 调用系统API函数操作鼠标指针 /// </summary> /// <param name="status">0表示隐藏鼠标指针，1表示显示鼠标指针</param> [DllImport("user32.dll", EntryPoint = "ShowCursor", CharSet = CharSet.Auto)] public static extern void ShowCursor(int status);}``