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我試圖完成這項工作的最後一天:使用WPF應用程序將我的計算機從睡眠或休眠狀態喚醒。沒有我試過的工作。WPF應用程序:喚醒計算機從睡眠或休眠狀態
到目前爲止,我已經試過最流行的例子在網絡上。例如:
[DllImport("kernel32.dll")]
public static extern SafeWaitHandle CreateWaitableTimer(IntPtr lpTimerAttributes,
bool bManualReset,
string lpTimerName);
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool SetWaitableTimer(SafeWaitHandle hTimer,
[In] ref long pDueTime,
int lPeriod,
IntPtr pfnCompletionRoutine,
IntPtr lpArgToCompletionRoutine,
bool fResume);
public static void SetWaitForWakeUpTime()
{
DateTime utc = DateTime.Now.AddMinutes(2);
long duetime = utc.ToFileTime();
using (SafeWaitHandle handle = CreateWaitableTimer(IntPtr.Zero, true, "MyWaitabletimer"))
{
if (SetWaitableTimer(handle, ref duetime, 0, IntPtr.Zero, IntPtr.Zero, true))
{
using (EventWaitHandle wh = new EventWaitHandle(false, EventResetMode.AutoReset))
{
wh.SafeWaitHandle = handle;
wh.WaitOne();
}
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
// You could make it a recursive call here, setting it to 1 hours time or similar
Console.WriteLine("Wake up call");
Console.ReadLine();
}
和使用:
WakeUp.SetWaitForWakeUpTime();
我也試過了這個例子(見如何我使用的代碼之後的方法):
public event EventHandler Woken;
private BackgroundWorker bgWorker = new BackgroundWorker();
public WakeUp()
{
bgWorker.DoWork += new DoWorkEventHandler(bgWorker_DoWork);
bgWorker.RunWorkerCompleted +=
new RunWorkerCompletedEventHandler(bgWorker_RunWorkerCompleted);
}
public void SetWakeUpTime(DateTime time)
{
bgWorker.RunWorkerAsync(time.ToFileTime());
}
void bgWorker_RunWorkerCompleted(object sender,
RunWorkerCompletedEventArgs e)
{
if (Woken != null)
{
Woken(this, new EventArgs());
}
}
private void bgWorker_DoWork(object sender, DoWorkEventArgs e)
{
long waketime = (long)e.Argument;
using (SafeWaitHandle handle =
CreateWaitableTimer(IntPtr.Zero, true,
this.GetType().Assembly.GetName().Name.ToString() + "Timer"))
{
if (SetWaitableTimer(handle, ref waketime, 0,
IntPtr.Zero, IntPtr.Zero, true))
{
using (EventWaitHandle wh = new EventWaitHandle(false,
EventResetMode.AutoReset))
{
wh.SafeWaitHandle = handle;
wh.WaitOne();
}
}
else
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
}
}
和使用:
WakeUp w = new WakeUp();
w.Woken += new EventHandler(w_Woken);
w.SetWakeUpTime(alarmDate.Subtract(new TimeSpan(0,0,0,20)));
一切似乎喚醒我的電腦。
我知道這是可能的,因爲其他幾個鬧鐘都可以。他們設法沒有問題地喚醒我的電腦,所以一定有一些錯誤。
參考此鏈接http://social.msdn.microsoft.com/Forums/da-DK/csharpgeneral/thread/89002ed0-21e6-4429-ac9d-89ff5faed164 – JSJ
相同的機制,因爲我使用,不工作..啊啊! –