private void CheckMessage(object?sender, WindowMessageEventArgs e)
{
if ((int)e.WParam == deviceNodesChanged)
{
DeviceArrived?.Invoke(sender, e);
}
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == WM_DEVICECHANGE)
{
DEV_BROADCAST_HDR hdr;
switch ((int)wParam)
{
case DBT_DEVICEARRIVAL:
Debug.WriteLine("Device added.");
hdr = (DEV_BROADCAST_HDR)Marshal.PtrToStructure(lParam, typeof(DEV_BROADCAST_HDR));
if (hdr.dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
{
var deviceInterface =
(DEV_BROADCAST_DEVICEINTERFACE)Marshal.PtrToStructure(lParam,
typeof(DEV_BROADCAST_DEVICEINTERFACE));
DeviceArrived?.Invoke(deviceInterface.dbcc_name);
}
break;
case DBT_DEVICEREMOVECOMPLETE:
Debug.WriteLine("Device removed.");
hdr = (DEV_BROADCAST_HDR)Marshal.PtrToStructure(lParam, typeof(DEV_BROADCAST_HDR));
if (hdr.dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
{
var deviceInterface =
(DEV_BROADCAST_DEVICEINTERFACE)Marshal.PtrToStructure(lParam,
typeof(DEV_BROADCAST_DEVICEINTERFACE));
DeviceRemoved?.Invoke(deviceInterface.dbcc_name);
}
break;
}
}
return(IntPtr.Zero);
}
private void ProcessMessage(Message message)
{
if (message.Msg == WM_DEVICECHANGE)
{
switch (message.WParam.ToInt32())
{
case DBT_DEVICEARRIVAL:
if (Marshal.ReadInt32(message.LParam, 4) == DBT_DEVTYP_VOLUME)
{
DEV_BROADCAST_VOLUME volume = Marshal.PtrToStructure <DEV_BROADCAST_VOLUME>(message.LParam);
string deviceName = DeviceMaskToDeviceName(volume.DBVC_UnitMask);
DeviceArrived?.Invoke(this, new DeviceNotificationEventArgs(deviceName));
RegisterDeviceNotification(deviceName);
}
break;
case DBT_DEVICEQUERYREMOVE:
if (Marshal.ReadInt32(message.LParam, 4) == DBT_DEVTYP_HANDLE)
{
DEV_BROADCAST_HANDLE data = Marshal.PtrToStructure <DEV_BROADCAST_HANDLE>(message.LParam);
if (DeviceHandles.ContainsKey(data.DBCH_HDevNotify))
{
DeviceQueryRemove?.Invoke(this, new DeviceNotificationEventArgs(DeviceHandles[data.DBCH_HDevNotify]));
}
UnregisterDeviceNotification(data.DBCH_HDevNotify, data.DBCH_Handle);
}
break;
case DBT_DEVICEREMOVECOMPLETE:
if (Marshal.ReadInt32(message.LParam, 4) == DBT_DEVTYP_VOLUME)
{
DEV_BROADCAST_VOLUME volume = Marshal.PtrToStructure <DEV_BROADCAST_VOLUME>(message.LParam);
string deviceName = DeviceMaskToDeviceName(volume.DBVC_UnitMask);
DeviceRemoveComplete?.Invoke(this, new DeviceNotificationEventArgs(deviceName));
}
break;
}
}
}
private void OnDeviceArrival()
{
_debugger.Trace();
// Searching for new devices
foreach (var driveInfo in DriveInfo.GetDrives())
{
// Ignore already presented devices
if (IsPresent(driveInfo.GetHashCode()))
{
continue;
}
// Creating and initializing new device
var device = _container.GetInstance <IDevice>();
device.Initialize(driveInfo);
// Adding to list and throwing event about that
Devices.Add(device);
DeviceArrived?.Invoke(this, new DeviceArrivedEventArgs(device));
}
}
protected virtual void OnDeviceArrived(DEV_BROADCAST_VOLUME volume)
{
// Get the drive letter
char c = DriveMaskToLetter(volume.dbcv_unitmask);
var e = new RemovableMediaEventArgs {
Drive = c + ":\\"
};
DeviceArrived?.Invoke(this, e);
// Register for query remove if requested
if (e.HookQueryRemove)
{
// If something is already hooked, unhook it now
if (this.deviceNotifyHandle != IntPtr.Zero)
{
RegisterForDeviceChange(false, null);
}
RegisterQuery(c + ":\\");
}
}
void IDeckLinkDeviceNotificationCallback.DeckLinkDeviceArrived(IDeckLink deckLinkDevice)
{
DeviceArrived?.Invoke(deckLinkDevice);
}