public Boolean UnregisterDeviceNotification()
{
if (false == DeviceManagement.StopReceivingDeviceNotifications(m_pdeviceHandler))
{
m_strLastErrorInfo = "Failed to stop receiving HID device notifications!";
return(false);
}
return(true);
}
/// <summary>
/// Perform actions that must execute when the program ends.
/// </summary>
private void ShutdownHid()
{
try
{
// Close open handles to the device.
if (!(hidHandle == null))
{
if (!(hidHandle.IsInvalid))
{
hidHandle.Close();
}
}
if (!(readHandle == null))
{
if (!(readHandle.IsInvalid))
{
readHandle.Close();
}
}
if (!(writeHandle == null))
{
if (!(writeHandle.IsInvalid))
{
writeHandle.Close();
}
}
// Stop receiving notifications.
MyDeviceManagement.StopReceivingDeviceNotifications(deviceNotificationHandle);
myDeviceDetected = false;
}
catch (Exception ex)
{
Tracer.Error(ex);
throw;
}
}
private static void DisposeNIA()
{
try
{
// Close open handles to the device.
if (!(hidHandle == null))
{
if (!(hidHandle.IsInvalid))
{
hidHandle.Close();
}
}
if (!(readHandle == null))
{
if (!(readHandle.IsInvalid))
{
readHandle.Close();
}
}
if (!(writeHandle == null))
{
if (!(writeHandle.IsInvalid))
{
writeHandle.Close();
}
}
// Stop receiving notifications.
DeviceManagement deviceManagement = new DeviceManagement();
deviceManagement.StopReceivingDeviceNotifications(deviceNotificationHandle);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// Mainform should call this function while closing in order to release usb
/// resources and stop the system to send needless notifications
/// to an already closed form
/// </summary>
public void ShutDownDevice()
{
device.CloseDeviceHandle();
deviceManager.StopReceivingDeviceNotifications(deviceNotificationHandle);
}
