private void StartTracking()
{
_hook = (int x, IntPtr wParam, IntPtr lParam) =>
{
crosshairAxisX.Top = Cursor.Position.Y - Config.DesktopTop;
crosshairAxisY.Left = Cursor.Position.X - Config.DesktopLeft;
return(WindowsApi.CallNextHookEx(x, WindowsApi.WH_MOUSE_LL, wParam, lParam));
};
WindowsApi.SetGlobalMouseHook(_hook);
}
void Hook()
{
m_KeyboardHookHandle = IntPtr.Zero;
m_User32Handle = IntPtr.Zero;
m_KeyboardHook = KeyboardHook;
m_User32Handle = WindowsApi.LoadLibrary("User32");
if (m_User32Handle != IntPtr.Zero)
{
m_KeyboardHookHandle = WindowsApi.SetWindowsHookEx((int)WindowsApi.WindowsHook.WH_KEYBOARD_LL, m_KeyboardHook, m_User32Handle, 0);
}
}
void Unhook()
{
if (m_KeyboardHookHandle != IntPtr.Zero)
{
WindowsApi.UnhookWindowsHookEx(m_KeyboardHookHandle);
m_KeyboardHookHandle = IntPtr.Zero;
m_KeyboardHook -= KeyboardHook;
}
if (m_User32Handle != IntPtr.Zero)
{
WindowsApi.FreeLibrary(m_User32Handle);
m_User32Handle = IntPtr.Zero;
}
}
private static void EnsureSubscribedToGlobalKeyboardEvents()
{
if (_sKeyboardHookHandle != 0)
{
return;
}
_sKeyboardDelegate = KeyboardHookProc;
_sKeyboardHookHandle = WindowsApi.SetWindowsHookEx(WindowsApi.WhKeyboardLl, _sKeyboardDelegate,
Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]), 0);
if (_sKeyboardHookHandle == 0)
{
var errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode);
}
}
private static void ForceUnsunscribeFromGlobalKeyboardEvents()
{
if (_sKeyboardHookHandle == 0)
{
return;
}
var result = WindowsApi.UnhookWindowsHookEx(_sKeyboardHookHandle);
_sKeyboardHookHandle = 0;
_sKeyboardDelegate = null;
if (result == 0)
{
var errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode);
}
}
