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158 changes: 158 additions & 0 deletions
158
Source/HelloSwitcher.Core/Models/PowerSuspendResumeWatcher.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| using System; | ||
| using System.Diagnostics; | ||
| using System.Runtime.InteropServices; | ||
|
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| namespace HelloSwitcher.Models; | ||
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| public class PowerSuspendResumeWatcher : IDisposable | ||
| { | ||
| #region Win32 | ||
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| [DllImport("Powrprof.dll")] | ||
| private static extern uint PowerRegisterSuspendResumeNotification( | ||
| uint flags, | ||
| in DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS recipient, | ||
| out IntPtr registrationHandle); | ||
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| [DllImport("Powrprof.dll")] | ||
| private static extern uint PowerUnregisterSuspendResumeNotification( | ||
| IntPtr registrationHandle); | ||
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| private const uint DEVICE_NOTIFY_CALLBACK = 2; | ||
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| [StructLayout(LayoutKind.Sequential)] | ||
| private struct DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS | ||
| { | ||
| public DeviceNotifyCallbackRoutine callback; | ||
| public IntPtr context; | ||
| } | ||
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| private delegate uint DeviceNotifyCallbackRoutine( | ||
| IntPtr context, | ||
| int type, | ||
| IntPtr setting); | ||
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| private const uint ERROR_SUCCESS = 0; | ||
|
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| #endregion | ||
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| private DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS _recipient; | ||
| private IntPtr _registrationHandle; | ||
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| public PowerSuspendResumeWatcher() | ||
| { | ||
| _recipient = new DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS | ||
| { | ||
| callback = new DeviceNotifyCallbackRoutine(DeviceNotifyCallback), | ||
| context = IntPtr.Zero | ||
| }; | ||
| uint result = PowerRegisterSuspendResumeNotification( | ||
| DEVICE_NOTIFY_CALLBACK, | ||
| in _recipient, | ||
| out _registrationHandle); | ||
| if (result != ERROR_SUCCESS) | ||
| { | ||
| Debug.WriteLine($"Failed to register suspend resume notification. ({result})"); | ||
| } | ||
| } | ||
|
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| private uint DeviceNotifyCallback(IntPtr context, int type, IntPtr setting) | ||
| { | ||
| if (Enum.IsDefined(typeof(PowerStatus), type)) | ||
| { | ||
| PowerStatusChanged?.Invoke(this, (PowerStatus)type); | ||
| } | ||
| return 0; | ||
| } | ||
|
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| public event EventHandler<PowerStatus> PowerStatusChanged; | ||
|
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| #region IDisposable | ||
|
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| private bool _isDisposed = false; | ||
|
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| public void Dispose() | ||
| { | ||
| Dispose(true); | ||
| GC.SuppressFinalize(this); | ||
| } | ||
|
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| protected virtual void Dispose(bool disposing) | ||
| { | ||
| if (_isDisposed) | ||
| return; | ||
|
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| if (disposing) | ||
| { | ||
| // Free any other managed objects here. | ||
| PowerStatusChanged = null; | ||
|
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| if (_registrationHandle != IntPtr.Zero) | ||
| { | ||
| uint result = PowerUnregisterSuspendResumeNotification(_registrationHandle); | ||
| if (result != ERROR_SUCCESS) | ||
| { | ||
| Debug.WriteLine($"Failed to unregister suspend resume notification. ({result})"); | ||
| } | ||
| } | ||
| } | ||
|
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| // Free any unmanaged objects here. | ||
| _isDisposed = true; | ||
| } | ||
|
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| #endregion | ||
| } | ||
|
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| public enum PowerStatus | ||
| { | ||
| /// <summary> | ||
| /// PBT_APMQUERYSUSPEND | ||
| /// </summary> | ||
| QuerySuspend = 0x0000, | ||
|
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| /// <summary> | ||
| /// PBT_APMQUERYSUSPENDFAILED | ||
| /// </summary> | ||
| QuerySuspendFailed = 0x0002, | ||
|
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| /// <summary> | ||
| /// PBT_APMSUSPEND | ||
| /// </summary> | ||
| Suspend = 0x0004, | ||
|
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| /// <summary> | ||
| /// PBT_APMRESUMECRITICAL | ||
| /// </summary> | ||
| ResumeCritical = 0x0006, | ||
|
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| /// <summary> | ||
| /// PBT_APMRESUMESUSPEND | ||
| /// </summary> | ||
| ResumeSuspend = 0x0007, | ||
|
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| /// <summary> | ||
| /// PBT_APMBATTERYLOW | ||
| /// </summary> | ||
| BatteryLow = 0x0009, | ||
|
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| /// <summary> | ||
| /// PBT_APMPOWERSTATUSCHANGE | ||
| /// </summary> | ||
| PowerStatusChange = 0x000A, | ||
|
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| /// <summary> | ||
| /// PBT_APMOEMEVENT | ||
| /// </summary> | ||
| OemEvent = 0x000B, | ||
|
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| /// <summary> | ||
| /// PBT_APMRESUMEAUTOMATIC | ||
| /// </summary> | ||
| ResumeAutomatic = 0x0012, | ||
|
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| /// <summary> | ||
| /// PBT_POWERSETTINGCHANGE | ||
| /// </summary> | ||
| PowerSettingChange = 0x8013 | ||
| } |
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