using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Diagnostics; using System.Runtime.InteropServices; using System.Drawing; namespace CC_Functions.W32 { public sealed class MouseHook : IDisposable { public void Dispose() { instances.Remove(this); if (instances.Count == 0) UnhookWindowsHookEx(_hookID); } private static List instances = new List(); private static LowLevelMouseProc _proc = HookCallback; private static IntPtr _hookID = IntPtr.Zero; public delegate void mouseEvent(MouseHookEventArgs _args); public event mouseEvent OnMouse; public MouseHook() { if (instances.Count == 0) _hookID = SetHook(_proc); instances.Add(this); } private static IntPtr SetHook(LowLevelMouseProc proc) { using (Process curProcess = Process.GetCurrentProcess()) using (ProcessModule curModule = curProcess.MainModule) { return SetWindowsHookEx(WH_MOUSE_LL, proc, GetModuleHandle(curModule.ModuleName), 0); } } private delegate IntPtr LowLevelMouseProc(int nCode, IntPtr wParam, IntPtr lParam); private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam) { if (nCode >= 0) { MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT)); for (int i = 0; i < instances.Count; i++) { instances[i].OnMouse?.Invoke(new MouseHookEventArgs(new Point(hookStruct.pt.x, hookStruct.pt.y), (MouseMessages)wParam)); } } return CallNextHookEx(_hookID, nCode, wParam, lParam); } private const int WH_MOUSE_LL = 14; public enum MouseMessages { WM_LBUTTONDOWN = 0x0201, WM_LBUTTONUP = 0x0202, WM_MOUSEMOVE = 0x0200, WM_MOUSEWHEEL = 0x020A, WM_RBUTTONDOWN = 0x0204, WM_RBUTTONUP = 0x0205 } [StructLayout(LayoutKind.Sequential)] private struct POINT { public int x; public int y; } [StructLayout(LayoutKind.Sequential)] private struct MSLLHOOKSTRUCT { public POINT pt; public uint mouseData; public uint flags; public uint time; public IntPtr dwExtraInfo; } [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelMouseProc lpfn, IntPtr hMod, uint dwThreadId); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool UnhookWindowsHookEx(IntPtr hhk); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam); [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)] private static extern IntPtr GetModuleHandle(string lpModuleName); } }