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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Runtime.InteropServices;
- using System.Text;
- using System.Threading.Tasks;
- namespace DayOf1440.Utils
- {
- public static class SystemSleep
- {
- [DllImport("kernel32")]
- private static extern ExecutionState SetThreadExecutionState(ExecutionState esFlags);
- [Flags]
- private enum ExecutionState : uint
- {
- /// <summary>
- /// Forces the system to be in the working state by resetting the system idle timer.
- /// </summary>
- SystemRequired = 0x01,
- /// <summary>
- /// Forces the display to be on by resetting the display idle timer.
- /// </summary>
- DisplayRequired = 0x02,
- /// <summary>
- /// This value is not supported. If <see cref="UserPresent"/> is combined with other esFlags values, the call will fail and none of the specified states will be set.
- /// </summary>
- [Obsolete("This value is not supported.")]
- UserPresent = 0x04,
- /// <summary>
- /// Enables away mode. This value must be specified with <see cref="Continuous"/>.
- /// <para />
- /// Away mode should be used only by media-recording and media-distribution applications that must perform critical background processing on desktop computers while the computer appears to be sleeping.
- /// </summary>
- AwaymodeRequired = 0x40,
- /// <summary>
- /// Informs the system that the state being set should remain in effect until the next call that uses <see cref="Continuous"/> and one of the other state flags is cleared.
- /// </summary>
- Continuous = 0x80000000,
- }
- /// <summary>
- /// 设置此线程此时开始一直将处于运行状态,此时计算机不应该进入睡眠状态。
- /// 此线程退出后,设置将失效。
- /// 如果需要恢复,请调用 <see cref="RestoreForCurrentThread"/> 方法。
- /// </summary>
- /// <param name="keepDisplayOn">
- /// 表示是否应该同时保持屏幕不关闭。
- /// 对于游戏、视频和演示相关的任务需要保持屏幕不关闭;而对于后台服务、下载和监控等任务则不需要。
- /// </param>
- public static void PreventForCurrentThread(bool keepDisplayOn = true)
- {
- SetThreadExecutionState(keepDisplayOn
- ? ExecutionState.Continuous | ExecutionState.SystemRequired | ExecutionState.DisplayRequired
- : ExecutionState.Continuous | ExecutionState.SystemRequired);
- }
- /// <summary>
- /// 恢复此线程的运行状态,操作系统现在可以正常进入睡眠状态和关闭屏幕。
- /// </summary>
- public static void RestoreForCurrentThread()
- {
- SetThreadExecutionState(ExecutionState.Continuous);
- }
- /// <summary>
- /// 重置系统睡眠或者关闭屏幕的计时器,这样系统睡眠或者屏幕能够继续持续工作设定的超时时间。
- /// </summary>
- /// <param name="keepDisplayOn">
- /// 表示是否应该同时保持屏幕不关闭。
- /// 对于游戏、视频和演示相关的任务需要保持屏幕不关闭;而对于后台服务、下载和监控等任务则不需要。
- /// </param>
- public static void ResetIdle(bool keepDisplayOn = true)
- {
- SetThreadExecutionState(keepDisplayOn
- ? ExecutionState.SystemRequired | ExecutionState.DisplayRequired
- : ExecutionState.SystemRequired);
- }
- }
-
- }
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