55 lines
1.6 KiB
C#
55 lines
1.6 KiB
C#
using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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namespace ControlApp;
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internal class LockMouse
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{
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private delegate nint LowLevelMouseProc(int nCode, nint wParam, nint lParam);
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private const int WH_MOUSE_LL = 14;
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private static LowLevelMouseProc _mouseProc = MouseHookCallback;
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private static nint _mouseHookID = IntPtr.Zero;
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern nint SetWindowsHookEx(int idHook, LowLevelMouseProc lpfn, nint hMod, uint dwThreadId);
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool UnhookWindowsHookEx(nint hhk);
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[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern nint CallNextHookEx(nint hhk, int nCode, nint wParam, nint lParam);
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[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern nint GetModuleHandle(string lpModuleName);
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private static nint SetMouseHook(LowLevelMouseProc proc)
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{
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using Process curProcess = Process.GetCurrentProcess();
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using ProcessModule curModule = curProcess.MainModule;
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return SetWindowsHookEx(14, proc, GetModuleHandle(curModule.ModuleName), 0u);
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}
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private static nint MouseHookCallback(int nCode, nint wParam, nint lParam)
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{
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if (nCode >= 0)
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{
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return 1;
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}
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return CallNextHookEx(_mouseHookID, nCode, wParam, lParam);
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}
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public void Lock()
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{
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_mouseHookID = SetMouseHook(_mouseProc);
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}
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public void Unlock()
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{
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UnhookWindowsHookEx(_mouseHookID);
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}
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}
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