AJ Isaacs
5db92d5127
- Use 32-bit Environment.TickCount with unchecked uint arithmetic so GetIdleTime stays correct after the ~49.7 day uint wrap boundary - Only clear _pausedTaskId after successful resume, not before the API call - Add retry path: if resume failed, retry on next poll cycle while user is still active Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
36 lines
1.1 KiB
C#
36 lines
1.1 KiB
C#
using System.Runtime.InteropServices;
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using System.Text;
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namespace WindowWatcher;
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internal static partial class NativeMethods
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{
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[LibraryImport("user32.dll")]
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internal static partial IntPtr GetForegroundWindow();
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[DllImport("user32.dll", CharSet = CharSet.Unicode)]
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internal static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int count);
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[LibraryImport("user32.dll", SetLastError = true)]
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internal static partial uint GetWindowThreadProcessId(IntPtr hWnd, out uint processId);
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[StructLayout(LayoutKind.Sequential)]
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internal struct LASTINPUTINFO
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{
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public uint cbSize;
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public uint dwTime;
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}
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[DllImport("user32.dll")]
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internal static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
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internal static TimeSpan GetIdleTime()
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{
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var info = new LASTINPUTINFO { cbSize = (uint)Marshal.SizeOf<LASTINPUTINFO>() };
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if (!GetLastInputInfo(ref info))
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return TimeSpan.Zero;
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// Use 32-bit TickCount so both values wrap at the same boundary as dwTime (uint)
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return TimeSpan.FromMilliseconds(unchecked((uint)Environment.TickCount - info.dwTime));
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}
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}
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