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");
}
private void AttachWinEventHook(IWinEventCallbacks callbacks, uint pid)
{
if (messagePumpTask == null)
{
messagePumpDone = false;
messagePumpTask = Task.Run(() => MessagePump(callbacks, pid));
}
}
public WinEventCallback(IWinEventCallbacks callbacks, uint pidOfInterest)
{
this.pid = pidOfInterest;
this.callbacks = callbacks;
}
public WinEventSystem(IWinEventCallbacks callbacks, uint pid)
{
this.AttachWinEventHook(callbacks, pid);
}
public WinEventSystem AttachWinEventSystem(IWinEventCallbacks callbacks)
{
return(new WinEventSystem(callbacks, (uint)this.pid));
}