参考的网址有:
http://bbs.csdn.net/topics/100033612
http://blog.csdn.net/dengta_snowwhite/article/details/6154199
详细做法:
1、定义结构体
[StructLayout(LayoutKind.Sequential)]
struct LASTINPUTINFO
{
// 设置结构体块容量
[MarshalAs(UnmanagedType.U4)]
public int cbSize;
// 捕获的时间
[MarshalAs(UnmanagedType.U4)]
public uint dwTime;
}
2、定义定时器,结构体对象等
private DispatcherTimer mIdleTimer;
private LASTINPUTINFO mLastInputInfo;
[DllImport("user32.dll")]
private static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
3、初始化
mLastInputInfo = new LASTINPUTINFO();
mLastInputInfo.cbSize = Marshal.SizeOf(mLastInputInfo);
mIdleTimer = new System.Windows.Threading.DispatcherTimer();
mIdleTimer.Tick += new EventHandler(IdleTime);//起个Timer一直获取当前时间
mIdleTimer.Interval = new TimeSpan(0, 0, 0, 1, 0);
mIdleTimer.Start();
4、实现
private void IdleTime(object sender, EventArgs e)
{
if (!GetLastInputInfo(ref mLastInputInfo))
MessageBox.Show("GetLastInputInfo Failed!");
else
{
if ((Environment.TickCount - (long)mLastInputInfo.dwTime) / 1000 > 300)
{
MessageBox.Show("no operation for 5 minutes.");
}
}
}
WPF:检测用户在一定时间内没有动作(即没有鼠标键盘的事件)