windows程序自动锁屏功能的实现

windows程序自动锁屏功能的实现 这个问题来自论坛提问 Q:当我登录进入主界面时，在规定的时间内没有做任何操作，系统就注销(就像电脑的屏保)。 A: 其实很简单,参考一个api函数就可以了:GetLastInputInfo,以下是参考代码 演示程序在你10秒内没有任何鼠标键盘活动既最小化，最小化后晃动鼠标即可复原 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 WindowsApplication28 ...{ public partial class Form1 : Form ...{ [StructLayout(LayoutKind.Sequential)] public struct LASTINPUTINFO ...{ [MarshalAs(UnmanagedType.U4)] public int cbSize; [MarshalAs(UnmanagedType.U4)] public uint dwTime; } [DllImport("user32.dll")] public static extern bool GetLastInputInfo(ref LASTINPUTINFO plii); public long getIdleTick() ...{ LASTINPUTINFO vLastInputInfo = new LASTINPUTINFO(); vLastInputInfo.cbSize = Marshal.SizeOf(vLastInputInfo); if (!GetLastInputInfo(ref vLastInputInfo)) return 0; return Environment.TickCount - (long)vLastInputInfo.dwTime; } public Form1() ...{ InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) ...{ this.timer1.Interval = 2000; this.timer1.Enabled = true; } private void timer1_Tick(object sender, EventArgs e) ...{ long i = getIdleTick(); this.Text = string.Format("jinjazz说:您已经{0}ms没有动了",i); if (i > 10 * 1000) ...{ this.WindowState = FormWindowState.Minimized; } else ...{ this.WindowState = FormWindowState.Normal; } } } }