/// <summary>
/// Stops feed retreival process.
/// </summary>
public void Stop()
{
try
{
this.stop = true;
timer.Change(Timeout.Infinite, Timeout.Infinite);
resetEvent.Set();
//thread.Abort();
//thread.Join();
started = false;
}
catch { };
}
/// <summary>
/// Begins running a standard application message loop on the current thread, and makes the specified form visible.
/// </summary>
/// <param name="mainForm">Form on which main message loop runs</param>
/// <param name="runAsSingletonApp">When <b>true</b>, if an existing instance of the app is already running, the current application instance will simply exit and the already running app will come to the fore</param>
/// <param name="displayMainForm">When set to true, the main form will be automatically displayed, else the app will be responsible for showing the Form</param>
public static void Run(Form mainForm, bool runAsSingletonApp, bool displayMainForm)
{
bool isNew = true;
NamedMutex m = new NamedMutex(true, Application2.StartupPath, out isNew);
if (runAsSingletonApp)
{
if (!isNew)
{
// activate the existing instance
EventWaitHandle wh = new EventWaitHandle(false, EventResetMode.AutoReset, Application2.StartupPath);
wh.Set();
return;
}
else
{
//create a thread to wait for any subsequent instances to signal
remoteActivateThread = new Thread(new System.Threading.ThreadStart(RemoteActivateThreadProc));
remoteActivateThread.IsBackground = true;
remoteActivateThread.Name = "SDF Application2 UI thread";
remoteActivateThread.Start();
// create a filter to track the currently active form so if
// we get reactivated from another instance attempting to run
// we know what Form to put topmost
currentFormFilter = new CurrentFormMessageFilter();
AddMessageFilter(currentFormFilter);
}
} // if (runAsSingletonApp)
mainForm.Closed += new EventHandler(MainFormExit);
Application2.mainForm = mainForm;
RunMessageLoop(displayMainForm);
}
/// <summary>
/// This member overrides Component.Dispose.
/// </summary>
/// <param name="disposing"></param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
GC.SuppressFinalize(this);
}
if (m_running)
{
Stop();
}
if (m_callbackHandle.IsAllocated)
{
m_callbackHandle.Free();
}
// stop worker thread
m_disposing = true;
m_waitHandle.Set();
m_waitHandle.Close();
base.Dispose(disposing);
}
public void StopListen()
{
bool createdNew = false;
EventWaitHandle ewh = new EventWaitHandle(false, EventResetMode.ManualReset, WaitHandleName, out createdNew);
if (ewh != null)
{
m_quit = true;
ewh.Set();
EventWaitHandle quit = new EventWaitHandle(false, EventResetMode.ManualReset, WaitHandleNameQuit, out createdNew);
quit.WaitOne(5000, true);
}
m_listening = false;
}
protected void Dispose(bool finalizing)
{
// Check to see if Dispose has already been called.
if (!this.disposed)
{
// kill the worker thread
m_quit = true;
EventWaitHandle ewh = new EventWaitHandle(false, EventResetMode.ManualReset, WaitHandleName);
ewh.Set();
}
if (!finalizing)
{
GC.SuppressFinalize(this);
}
disposed = true;
}
/// <summary>
/// When overridden in a derived class, releases the unmanaged resources used by the LargeIntervalTimer, and optionally releases the managed resources.
/// </summary>
public void Dispose()
{
lock (m_interlock)
{
m_disposing = true;
if (Enabled)
{
Enabled = false;
}
if (m_quitHandle != null)
{
m_quitHandle.Set();
m_quitHandle.Close();
m_quitHandle = null;
}
}
}
private unsafe void ThreadProc()
{
IntPtr notifyHandle = NativeMethods.FindFirstChangeNotification(m_path, true, filter);
FileNotifyInformation notifyData = new FileNotifyInformation();
uint returned = 0;
uint available = 0;
EventWaitHandle ewh = new EventWaitHandle(false, EventResetMode.ManualReset, WaitHandleName);
EventWaitHandle quitWaitHandle = new EventWaitHandle(false, EventResetMode.ManualReset, WaitHandleNameQuit);
while (!m_quit)
{
ewh.Reset();
if (EventWaitHandle.WaitAny(new IntPtr[] { notifyHandle, ewh.Handle }, TimeoutInfinite, false) != EventWaitHandle.WaitTimeout)
{
if (m_quit)
{
break;
}
IntPtr ptr = IntPtr.Zero;
if (NativeMethods.CeGetFileNotificationInfo(notifyHandle, 0, ref ptr, 0, ref returned, ref available))
{
if (available > 0)
{
int maxData = 2048;
fixed(byte *pData = new byte[maxData])
{
// get data
if (NativeMethods.CeGetFileNotificationInfo(notifyHandle, 0, pData, maxData, ref returned, ref available))
{
notifyData = new FileNotifyInformation(pData, 0);
// handle data in notifyData
if (ValidateByFilter(notifyData.Filename))
{
RaiseEvents(notifyData.Action, notifyData.Filename);
}
int offset = 0;
offset += notifyData.NextEntryOffset;
while (notifyData.NextEntryOffset > 0)
{
notifyData = new FileNotifyInformation(pData, offset);
if (ValidateByFilter(notifyData.Filename))
{
RaiseEvents(notifyData.Action, notifyData.Filename);
}
offset += notifyData.NextEntryOffset;
}
}
}
}
else
{
//Seems that subdirectories don't return anything but then the notifyHandle is never reset and if available data is 0 notifyHandle never resets
NativeMethods.FindCloseChangeNotification(notifyHandle);
notifyHandle = NativeMethods.FindFirstChangeNotification(m_path, true, filter);
}
}
} // if( waithandle...
} // while (!m_quit)
NativeMethods.FindCloseChangeNotification(notifyHandle);
quitWaitHandle.Set();
}
