protected override IDisposable StartCore(Action <TimeSpan> tick)
{
EnsureTimerQueueCreated();
var msPerFrame = 1000 / FramesPerSecond;
timerDelegate = (_, __) => tick(TimeSpan.FromMilliseconds(Environment.TickCount));
UnmanagedMethods.CreateTimerQueueTimer(
out var timer,
_timerQueue,
timerDelegate,
IntPtr.Zero,
(uint)msPerFrame,
(uint)msPerFrame,
0
);
return(Disposable.Create(() =>
{
timerDelegate = null;
UnmanagedMethods.DeleteTimerQueueTimer(_timerQueue, timer, IntPtr.Zero);
}));
}