public static bool TimersSupported()
{
IntPtr timerHandle = CreateWaitableTimer(IntPtr.Zero, true, "Wait Timer 1");
long interval = 0;
int retVal = 0;
if (timerHandle != IntPtr.Zero)
{
TimerCompleteDelegate TimerComplete = new TimerCompleteDelegate(TimerCompleted);
SetWaitableTimer(timerHandle, ref interval, 0, TimerComplete, IntPtr.Zero, true);
retVal = Marshal.GetLastWin32Error();
CancelWaitableTimer(timerHandle);
try
{
CloseHandle(timerHandle);
}
catch (Exception exp)
{
}
timerHandle = IntPtr.Zero;
}
//SUCCESS
if (retVal == 0)
{
return(true);
}
else
{
return(false);
}
}
public static IntPtr SetWakeAt(DateTime dt)
{
TimerCompleteDelegate timerComplete = null;
// read the manual for SetWaitableTimer to understand how this number is interpreted.
long interval = dt.ToFileTimeUtc();
IntPtr handle = CreateWaitableTimer(IntPtr.Zero, true, "WaitableTimer");
SetWaitableTimer(handle, ref interval, 0, timerComplete, IntPtr.Zero, true);
return(handle);
}
private IntPtr SetWakeAt(DateTime dt)
{
// read the manual for SetWaitableTimer to understand how this number is interpreted.
// long interval = dt.ToFileTimeUtc();
TimerCompleteDelegate timerComplete = null;
// long interval = -100000000L;
long interval = dt.ToFileTime();
IntPtr handle = CreateWaitableTimer(IntPtr.Zero, true, "WaitableTimer");
bool erg = SetWaitableTimer(handle, ref interval, 0, timerComplete, IntPtr.Zero, true);
DisplayBallonMessage("Wakeup @: " + dt.ToString(), 10000);
return(handle);
}
public static bool CreateTimer()
{
DateTime utc = DateTime.Now.AddMinutes(2);
long Interval = utc.ToFileTime();
TimerCompleteDelegate TimerComplete = new TimerCompleteDelegate(TimerCompleted);
TimerSetDelegate TimerSet = new TimerSetDelegate(TimerIsSet);
// Creating the timer
//
Console.WriteLine("Creating WaitableTimer");
IntPtr handle = CreateWaitableTimer(IntPtr.Zero, true, "WaitableTimer");
int retVal = Marshal.GetLastWin32Error();
Console.WriteLine("Last Error = " + retVal.ToString());
if (retVal != 0)
{
return(false);
}
// Setting up the timer, the long Interval value needs to be negative if
// you want to set up a delay in milliseconds. ie
// if Interval = -60000000 the timer will expire in 1 minute. Once expired it runs the
// TimerComplete delegate
//
Console.WriteLine("Setting WaitableTimer");
SetWaitableTimer(handle, ref Interval, 0, TimerComplete, IntPtr.Zero, true);
retVal = Marshal.GetLastWin32Error();
Console.WriteLine("Last Error = " + Marshal.GetLastWin32Error().ToString()); // The error may be 1004 (Invalid flags), this is not critical
if (retVal != 0 && retVal != 1004)
{
return(false);
}
Console.WriteLine("Timer set @ " + DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss"));
// Starting a new thread which waits for the WaitableTimer to expire
//
Thread t_Wait = new Thread(new ThreadStart(() => WaitTimer(handle)));
t_Wait.Start();
// Raising Event Timer Set
//
if (OnTimerSet != null)
{
OnTimerSet();
}
return(true);
}
/// <summary>
/// 延迟
/// </summary>
/// <param name="time">单位毫秒</param>
public static bool Sleep(int time)
{
TimerCompleteDelegate TimerComplete = new TimerCompleteDelegate(TimerCompleted);
long Interval = -10 * time * 1000;//占8字节
//创建计时器
IntPtr handle = CreateWaitableTimer(IntPtr.Zero, true, "WaitableTimer");
SetWaitableTimer(handle, ref Interval, 0, TimerComplete, IntPtr.Zero, true);
//等待消息抵达
while (MsgWaitForMultipleObjects(1, ref handle, false, -1, 255) != 0)
{
//转让权限
Application.DoEvents();
}
return(CloseHandle(handle));
}
public static extern bool SetWaitableTimer(IntPtr hTimer, [In] ref LARGE_INTEGER ft, int lPeriod, TimerCompleteDelegate pfnCompletionRoutine, IntPtr pArgToCompletionRoutine, bool fResume);
private static extern bool SetWaitableTimer(SafeWaitHandle hTimer, [In] ref long pDueTime, int lPeriod, TimerCompleteDelegate pfnCompletionRoutine, IntPtr lpArgToCompletionRoutine, bool fResume);
