internal WindowsDeviceNotifyEventArgs(DevBroadcastHdr hdr, IntPtr ptrHdr, EventType eventType)
{
mBaseHdr = hdr;
mEventType = eventType;
mDeviceType = mBaseHdr.DeviceType;
switch (mDeviceType)
{
case DeviceType.Volume:
mVolume = new VolumeNotifyInfo(ptrHdr);
mObject = mVolume;
break;
case DeviceType.Port:
mPort = new PortNotifyInfo(ptrHdr);
mObject = mPort;
break;
case DeviceType.DeviceInterface:
mDevice = new UsbDeviceNotifyInfo(ptrHdr);
mObject = mDevice;
break;
}
}
private void OnDeviceChange(ref Message m)
{
if (!mEnabled) return;
if (m.LParam.ToInt64() != 0) // ToInt32() only works on non-x64 platforms.
{
EventHandler<DeviceNotifyEventArgs> temp = OnDeviceNotify;
if (!ReferenceEquals(temp, null))
{
DeviceNotifyEventArgs args;
DevBroadcastHdr hdr = new DevBroadcastHdr();
Marshal.PtrToStructure(m.LParam, hdr);
switch (hdr.DeviceType)
{
case DeviceType.Port:
case DeviceType.Volume:
case DeviceType.DeviceInterface:
args = new WindowsDeviceNotifyEventArgs(hdr, m.LParam, (EventType)m.WParam.ToInt32());
break;
default:
args = null;
break;
}
if (!ReferenceEquals(args, null)) temp(this, args);
}
}
}