public static Deleter CreateGlobalOutOfContextHook(ISet <uint> eventTypes, WinEventCallback handler)
{
uint min = eventTypes.Min();
uint max = eventTypes.Max();
WINEVENTPROC?callback = delegate(HWINEVENTHOOK hWinEventHook, uint eventType,
HWND hwnd, int idObject, int idChild, uint dwEventThread, uint dwmsEventTime)
{
if (eventTypes.Contains(eventType))
{
handler(eventType, hwnd, idObject, idChild, dwEventThread, dwmsEventTime);
}
};
IntPtr hHook = SetWinEventHook(min, max, IntPtr.Zero, callback, idProcess: 0, idThread: 0, WINEVENT_OUTOFCONTEXT);
if (IntPtr.Zero == hHook)
{
throw new Win32Exception().WithMessage("Could not set a window message event hook!");
}
return(new Deleter(() =>
{
// Capture and null callback
callback = null;
UnhookWinEvent(new(hHook));
}));
}
private void MessagePump(IWinEventCallbacks callbacks, uint pid)
{
Log.Comment("Accessibility message pump thread started");
WinEventCallback callback = new WinEventCallback(callbacks, pid);
IntPtr hWinEventHook = User32.SetWinEventHook(
User32.WinEventId.EVENT_CONSOLE_CARET,
User32.WinEventId.EVENT_CONSOLE_END_APPLICATION,
IntPtr.Zero, // Use our own module
new User32.WinEventDelegate(callback.WinEventProc), // Our callback function
0, // All processes
0, // All threads
User32.WinEventFlags.WINEVENT_SKIPOWNPROCESS | User32.WinEventFlags.WINEVENT_SKIPOWNTHREAD);
NativeMethods.Win32NullHelper(hWinEventHook, "Registering accessibility event hook.");
Log.Comment("Entering accessibility pump loop.");
while (!messagePumpDone)
{
User32.MSG msg;
if (User32.PeekMessage(out msg, IntPtr.Zero, 0, 0, User32.PM.PM_REMOVE))
{
User32.DispatchMessage(ref msg);
}
Thread.Sleep(200);
}
Log.Comment("Exiting accessibility pump loop.");
NativeMethods.Win32BoolHelper(User32.UnhookWinEvent(hWinEventHook), "Unregistering accessibility event hook.");
Log.Comment("Accessibility message pump thread ended");
}
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
_windowHandle = new WindowInteropHelper(this).Handle;
Handle = _windowHandle;
_source = HwndSource.FromHwnd(_windowHandle);
_source.AddHook(HookCallbackManager.WindowsKeyHookCallback);
WinApiProxy.RegisterHotKey(_windowHandle, KeyHookConstants.HOTKEY_ID, KeyHookConstants.MOD_ALT, KeyHookConstants.VK_OEM_COMMA); //ALT + ,
_windowEventCallback = HookCallbackManager.WindowsWindowCreatedHook;
HookManager.RegisterCallBack(ref _windowEventCallback);
HookManager.SubscribeToWindowEvents();
}
public extern static IntPtr SetWinEventHook(
uint eventMin, uint eventMax,
IntPtr hmodWinEventProc,
WinEventCallback callback,
uint idProcess, uint idThread,
uint dwFlags);
public static extern IntPtr SetWinEventHook(
uint eventMin, uint eventMax, IntPtr dllHandle,
WinEventCallback callback, uint processId,
uint threadId, uint flags);
public static void RegisterCallBack(ref WinEventCallback window)
{
_mainWin = window;
}
