public int HookProcedure(int nCode, IntPtr wParam, IntPtr lParam)
{
bool cancel = false;
if (nCode >= 0 && (wParam == (IntPtr)User32.WindowMessage.WM_KEYDOWN || wParam == (IntPtr)User32.WindowMessage.WM_SYSKEYDOWN))
{
Win32Api.KBDLLHOOKSTRUCT kb = (Win32Api.KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(Win32Api.KBDLLHOOKSTRUCT));
if ((kb.dwFlags & Win32Api.KBDLLHOOKSTRUCTF.LLKHF_INJECTED) == 0)
{
cancel = OnKeyDownEvent(kb);
}
}
else if (nCode >= 0 && (wParam == (IntPtr)User32.WindowMessage.WM_KEYUP || wParam == (IntPtr)User32.WindowMessage.WM_SYSKEYUP))
{
Win32Api.KBDLLHOOKSTRUCT kb = (Win32Api.KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(Win32Api.KBDLLHOOKSTRUCT));
if ((kb.dwFlags & Win32Api.KBDLLHOOKSTRUCTF.LLKHF_INJECTED) == 0)
{
cancel = OnKeyUpEvent(kb);
}
}
if (cancel)
{
return((int)new IntPtr(1));
}
else
{
return(User32.CallNextHookEx(hookId.DangerousGetHandle(), nCode, wParam, lParam));
}
}
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
NativeMethods.UnhookWindowsHookEx(_hookHandle.DangerousGetHandle());
_hookHandle.Close();
_disposedValue = true;
}
}
/// <summary>
/// <inheritdoc cref="User32.WindowsHookDelegate"/>
/// </summary>
private static int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
var msg = (User32.WindowMessage)wParam;
if (msg == User32.WindowMessage.WM_LBUTTONDOWN || msg == User32.WindowMessage.WM_RBUTTONDOWN)
{
var input = Marshal.PtrToStructure <User32.MOUSEINPUT>(lParam);
MouseChanged?.Invoke(null, new MouseMessageArg
{
Msg = (int)msg,
X = input.dx,
Y = input.dy
});
}
}
return(User32.CallNextHookEx(MouseHook.DangerousGetHandle(), nCode, wParam, lParam));
}
public void SetupHook()
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
IntPtr ModuleHandle = Kernel32.GetModuleHandle(curModule.ModuleName);
if (ModuleHandle != IntPtr.Zero)
{
WindowsHookExHandle = User32.SetWindowsHookEx(User32.WindowsHookType.WH_KEYBOARD_LL, windowsHook, ModuleHandle, 0);
handle = WindowsHookExHandle.DangerousGetHandle();
}
}
}
public void Start()
{
WindowsHookProceDure = new HookProc(WindowsHookProc);
IntPtr lpfnHooker = Marshal.GetFunctionPointerForDelegate(WindowsHookProceDure);
IntPtr hMod = Kernel32.GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName).DangerousGetHandle();
//最后一个参数为要注入的线程ID,为0时表示注册全局(系统)钩子
User32.SafeHookHandle result = User32.SetWindowsHookEx(User32.WindowsHookType.WH_CBT, lpfnHooker, Kernel32.GetModuleHandle(new FileInfo("./Injector.dll").FullName).DangerousGetHandle(), 0);
int error = Marshal.GetLastWin32Error();
//wHookId = SetWindowsHookEx((int)User32.WindowsHookType.WH_CBT, WindowsHookProceDure, hMod, 0);
if ((wHookId | result.DangerousGetHandle().ToInt32()) == 0)
{
throw new Exception("安装钩子失败");
}
}