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原文:WPF 窗體中獲取鍵盤和鼠標無操作時的超時提示

通過調用Windows API中的GetLastInputInfo來獲取最後一次輸入的時間

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Runtime.InteropServices;

namespace WpfApplication1
{
/// <summary>
/// Window1.xaml 的交互邏輯
/// </summary>
public partial class Window1 : Window
{
System.Windows.Threading.DispatcherTimer timer;

public Window1()
{
InitializeComponent();
timer = new System.Windows.Threading.DispatcherTimer();
timer.Interval = new TimeSpan(0, 0, 1);
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
}

void timer_Tick(object sender, EventArgs e)
{
if (GetIdleTick() / 1000 > 10)
{
MessageBox.Show("鍵盤或鼠標沒有操作超過10秒");
}
}


[DllImport("user32.dll")]
static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);

public static long GetIdleTick()
{
LASTINPUTINFO lastInputInfo = new LASTINPUTINFO();
lastInputInfo.cbSize = Marshal.SizeOf(lastInputInfo);
if (!GetLastInputInfo(ref　lastInputInfo)) return 0;
return Environment.TickCount - (long)lastInputInfo.dwTime;
}

[StructLayout(LayoutKind.Sequential)]
private struct LASTINPUTINFO
{
[MarshalAs(UnmanagedType.U4)]
public int cbSize;
[MarshalAs(UnmanagedType.U4)]
public uint dwTime;
}

}
}

WPF 窗體中獲取鍵盤和鼠標無操作時的超時提示