private void OnDeviceArrival(DeviceBroadcastHeader dbh, IntPtr ptr)
{
if (dbh.DeviceType == 0x05)
{
DeviceBroadcastInterface dbi =
(DeviceBroadcastInterface)Marshal.PtrToStructure(ptr, typeof(DeviceBroadcastInterface));
if (dbi.ClassGuid == _deviceClass && DeviceArrival != null)
{
DeviceArrival(this, EventArgs.Empty);
}
}
}
private void OnDeviceRemoval(DeviceBroadcastHeader header, IntPtr ptr)
{
if (header.DeviceType == 0x06)
{
DeviceBroadcastHandle dbh = (DeviceBroadcastHandle)Marshal.PtrToStructure(ptr, typeof(DeviceBroadcastHandle));
if (dbh.Handle != _deviceHandle.DangerousGetHandle())
{
return;
}
CancelIo(_deviceHandle);
UnregisterDeviceRemoval();
if (DeviceRemoval != null)
{
DeviceRemoval(this, EventArgs.Empty);
}
}
}
private void OnDeviceRemoval(DeviceBroadcastHeader header, IntPtr ptr)
{
if (header.DeviceType == 0x06)
{
DeviceBroadcastHandle dbh = (DeviceBroadcastHandle)Marshal.PtrToStructure(ptr, typeof (DeviceBroadcastHandle));
if (dbh.Handle != _deviceHandle.DangerousGetHandle())
{
return;
}
CancelIo(_deviceHandle);
UnregisterDeviceRemoval();
if (DeviceRemoval != null)
{
DeviceRemoval(this, EventArgs.Empty);
}
}
}
private void OnDeviceArrival(DeviceBroadcastHeader dbh, IntPtr ptr)
{
if (dbh.DeviceType == 0x05)
{
DeviceBroadcastInterface dbi =
(DeviceBroadcastInterface)Marshal.PtrToStructure(ptr, typeof (DeviceBroadcastInterface));
if (dbi.ClassGuid == _deviceClass && DeviceArrival != null)
{
DeviceArrival(this, EventArgs.Empty);
}
}
}
private void OnDeviceRemoval(DeviceBroadcastHeader header, IntPtr ptr)
{
if (header.DeviceType == 0x06)
{
DeviceBroadcastHandle dbh = (DeviceBroadcastHandle) Marshal.PtrToStructure(ptr, typeof (DeviceBroadcastHandle));
if (dbh.Handle != _deviceHandle)
return;
CancelIo(_deviceHandle);
UnregisterDeviceRemoval();
if (DeviceRemoval != null)
DeviceRemoval();
}
}
