private void HookMouse()
{
GC.KeepAlive(this);
// Locking 'this' here is ok since this is an internal class.
lock (this)
{
if (_mouseHookHandle != IntPtr.Zero)
{
return;
}
if (_thisProcessId == 0)
{
User32.GetWindowThreadProcessId(_control, out _thisProcessId);
}
var hook = new User32.HOOKPROC(new MouseHookObject(this).Callback);
_mouseHookRoot = GCHandle.Alloc(hook);
_mouseHookHandle = User32.SetWindowsHookExW(
User32.WH.MOUSE,
hook,
IntPtr.Zero,
Kernel32.GetCurrentThreadId());
Debug.Assert(_mouseHookHandle != IntPtr.Zero, "Failed to install mouse hook");
Debug.WriteLineIf(CompModSwitches.DebugGridView.TraceVerbose, "DropDownHolder:HookMouse()");
}
}
private void HookMouse()
{
Debug.Assert(s_adornerWindowList.Count > 0, "No AdornerWindow available to create the mouse hook");
lock (this)
{
if (_mouseHookHandle != IntPtr.Zero || s_adornerWindowList.Count == 0)
{
return;
}
if (_thisProcessID == 0)
{
AdornerWindow adornerWindow = s_adornerWindowList[0];
User32.GetWindowThreadProcessId(adornerWindow, out _thisProcessID);
}
var hook = new User32.HOOKPROC(MouseHookProc);
_mouseHookRoot = GCHandle.Alloc(hook);
_mouseHookHandle = User32.SetWindowsHookExW(
User32.WH.MOUSE,
hook,
IntPtr.Zero,
Kernel32.GetCurrentThreadId());
if (_mouseHookHandle != IntPtr.Zero)
{
_isHooked = true;
}
Debug.Assert(_mouseHookHandle != IntPtr.Zero, "Failed to install mouse hook");
}
}
public void Start()
{
// Install Mouse Hook
MouseHookProcedure = new User32.HOOKPROC(MouseHookProc);
hMouseHook = User32.SetWindowsHookEx(
User32.WH_MOUSE_LL,
MouseHookProcedure,
Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]),
0);
if (IntPtr.Zero == hMouseHook)
{
//Common.Log("Error installing mouse hook: " + Marshal.GetLastWin32Error().ToString());
Stop();
}
}
/// <summary>
/// install the hook. quite easy
/// </summary>
private static void InstallHook()
{
if (s_hhook == IntPtr.Zero)
{
s_hook = new User32.HOOKPROC(new SendKeysHookProc().Callback);
s_stopHook = false;
s_hhook = User32.SetWindowsHookExW(
User32.WH.JOURNALPLAYBACK,
s_hook,
Kernel32.GetModuleHandleW(null),
0);
if (s_hhook == IntPtr.Zero)
{
throw new SecurityException(SR.SendKeysHookFailed);
}
}
}
//
// Private methods
//
#region private void AttachKeyboardHook()
private void AttachKeyboardHook()
{
keyboardHook = new User32.HOOKPROC(KeyboardHookHandler);
GC.KeepAlive(keyboardHook);
hKeyboardHook = User32.SetWindowsHookEx(
WindowsHookCode.WH_KEYBOARD_LL,
keyboardHook,
(int)Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]),
0);
if (hKeyboardHook == 0)
{
int errorCode = Marshal.GetLastWin32Error();
DetachKeyboardHook(true);
throw new Win32Exception(errorCode);
}
}
private static void TestHook()
{
hookSupported = false;
try
{
var hookProc = new User32.HOOKPROC(EmptyHookCallback);
IntPtr hookHandle = User32.SetWindowsHookExW(
User32.WH.JOURNALPLAYBACK,
hookProc,
Kernel32.GetModuleHandleW(null),
0);
hookSupported = (hookHandle != IntPtr.Zero);
if (hookHandle != IntPtr.Zero)
{
User32.UnhookWindowsHookEx(hookHandle);
}
}
catch
{
// Ignore any exceptions to keep existing SendKeys behavior
}
}
public HookDemo()
{
_mouseHook = OnMouseHook;
}
private void AttachKeyboardHook()
{
keyboardHook = new User32.HOOKPROC(KeyboardHookHandler);
GC.KeepAlive(keyboardHook);
hKeyboardHook = User32.SetWindowsHookEx(
WindowsHookCode.WH_KEYBOARD_LL,
keyboardHook,
(int)Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]),
0);
if (hKeyboardHook == 0)
{
int errorCode = Marshal.GetLastWin32Error();
DetachKeyboardHook(true);
throw new Win32Exception(errorCode);
}
}
public MouseHook(User32.HOOKPROC h)
{
this.HookProc = h;
}
public KeyboardHookService(IMessageService messageService)
{
this.messageService = messageService;
hookProc = HookCallback;
}
public KeyboardHook(User32.HOOKPROC h)
{
this.HookProc = h;
}
public MouseHookService(IMessageService messageService)
{
this.messageService = messageService;
hookProc = HookCallback;
}
