35 lines
1.3 KiB
C#
35 lines
1.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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namespace FocusVolumeControl
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{
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internal class Native
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{
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internal delegate void WinEventDelegate(IntPtr hWinEventHook, uint eventType, IntPtr hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime);
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[DllImport("user32.dll")]
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static extern IntPtr SetWinEventHook(uint eventMin, uint eventMax, IntPtr hmodWinEventProc, WinEventDelegate lpfnWinEventProc, uint idProcess, uint idThread, uint dwFlags);
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[DllImport("user32.dll")]
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internal static extern bool UnhookWinEvent(IntPtr hWinEventHook);
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private const uint WINEVENT_OUTOFCONTEXT = 0;
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private const uint EVENT_SYSTEM_FOREGROUND = 3;
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internal static IntPtr RegisterForForegroundWindowChangedEvent(WinEventDelegate dele) => SetWinEventHook(EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_FOREGROUND, IntPtr.Zero, dele, 0, 0, WINEVENT_OUTOFCONTEXT);
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[DllImport("user32.dll")]
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internal static extern IntPtr GetForegroundWindow();
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[DllImport("user32.dll", SetLastError = true)]
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internal static extern uint GetWindowThreadProcessId(IntPtr hWnd, out int processId);
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}
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}
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