/// <summary>
/// Constructor
/// </summary>
/// <param name="action"></param>
/// <param name="handle"></param>
/// <param name="devNotify"></param>
/// <param name="eventGuid"></param>
/// <param name="nameOffset"></param>
/// <param name="data"></param>
internal UsbEventHandleArgs(UsbDeviceChangeEvent action, IntPtr handle, IntPtr devNotify, Guid eventGuid, ulong nameOffset, byte[] data) : base(action)
{
this.Handle = handle;
this.DevNotify = devNotify;
this.EventGuid = eventGuid;
this.NameOffset = nameOffset;
this.Data = data;
}
/// <summary>
/// Main windows message handler and dispatcher
/// </summary>
/// <param name="monitor">Monitor class to signal notifications</param>
/// <param name="hwnd">Window handle</param>
/// <param name="msg">Window message</param>
/// <param name="wparam">W parameter</param>
/// <param name="lparam">L parameter</param>
internal static void HwndHandler(IUsbMonitor monitor, IntPtr hwnd, int msg, IntPtr wparam, IntPtr lparam)
{
if (msg == WM_DEVICECHANGE)
{
UsbDeviceChangeEvent deviceChangeEvent = (UsbDeviceChangeEvent)wparam.ToInt32();
switch (deviceChangeEvent)
{
case UsbDeviceChangeEvent.Arrival:
case UsbDeviceChangeEvent.QueryRemove:
case UsbDeviceChangeEvent.QueryRemoveFailed:
case UsbDeviceChangeEvent.RemovePending:
case UsbDeviceChangeEvent.RemoveComplete:
UsbDeviceType deviceType = (UsbDeviceType)Marshal.ReadInt32(lparam, 4);
switch (deviceType)
{
case UsbDeviceType.OEM:
#if WINDOWS_UWP
var oem = Marshal.PtrToStructure <DevBroadcastOEM>(lparam);
#else
var oem = (DevBroadcastOEM)Marshal.PtrToStructure(lparam, typeof(DevBroadcastOEM));
#endif
Debug.WriteLine($"OEM: Size={oem.Size}, DeviceType={oem.DeviceType}, Reserved={oem.Reserved}, Identifier={oem.Identifier}, SuppFunc={oem.SuppFunc}");
var oemArgs = new UsbEventOemArgs(deviceChangeEvent, oem.Identifier, oem.SuppFunc);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbOem(monitor, oemArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbOemCommand?.CanExecute(oemArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbOemCommand?.Execute(oemArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbOem(oemArgs);
break;
case UsbDeviceType.Volume:
#if WINDOWS_UWP
var volume = Marshal.PtrToStructure <DevBroadcastVolume>(lparam);
#else
var volume = (DevBroadcastVolume)Marshal.PtrToStructure(lparam, typeof(DevBroadcastVolume));
#endif
char[] drives = DrivesFromMask(volume.UnitMask);
string drivesStr = drives.Select(d => $"{d}:").Aggregate((a, b) => $"{a}, {b}");
Debug.WriteLine($"Volume: size={volume.Size}, deviceType={volume.DeviceType}, reserved={volume.Reserved}, unitmask={volume.UnitMask}, flags={volume.Flags}, drives={drivesStr}");
var volumeArgs = new UsbEventVolumeArgs(deviceChangeEvent, volume.UnitMask, volume.Flags, drives);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbVolumem(monitor, volumeArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbVolumeCommand?.CanExecute(volumeArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbVolumeCommand?.Execute(volumeArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbVolume(volumeArgs);
break;
case UsbDeviceType.Port:
#if WINDOWS_UWP
var port = Marshal.PtrToStructure <DevBroadcastPort>(lparam);
#else
var port = (DevBroadcastPort)Marshal.PtrToStructure(lparam, typeof(DevBroadcastPort));
#endif
Debug.WriteLine($"Port: Size={port.Size}, DeviceType={port.DeviceType}, Reserved={port.Reserved}, Name={port.Name}");
var portArgs = new UsbEventPortArgs(deviceChangeEvent, port.Name);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbPort(monitor, portArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbPortCommand?.CanExecute(portArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbPortCommand?.Execute(portArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbPort(portArgs);
break;
case UsbDeviceType.DeviceInterface:
#if WINDOWS_UWP
var device = Marshal.PtrToStructure <DevBroadcastDeviceInterface>(lparam);
#else
var device = (DevBroadcastDeviceInterface)Marshal.PtrToStructure(lparam, typeof(DevBroadcastDeviceInterface));
#endif
Debug.WriteLine($"DeviceInterface: Size={device.Size}, DeviceType={device.DeviceType}, Reserved={device.Reserved}, ClassGuid={device.ClassGuid}, Name={device.Name}");
var interfaceArgs = new UsbEventDeviceInterfaceArgs(deviceChangeEvent, device.ClassGuid, GuidToEnum <UsbDeviceInterface>(device.ClassGuid), device.Name);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbDeviceInterface(monitor, interfaceArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbDeviceInterfaceCommand?.CanExecute(interfaceArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbDeviceInterfaceCommand?.Execute(interfaceArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbInterface(interfaceArgs);
break;
case UsbDeviceType.Handle:
#if WINDOWS_UWP
var handle = Marshal.PtrToStructure <DevBroadcastHandle>(lparam);
#else
var handle = (DevBroadcastHandle)Marshal.PtrToStructure(lparam, typeof(DevBroadcastHandle));
#endif
Debug.WriteLine($"DeviceInterface: Size={handle.Size}, DeviceType={handle.DeviceType}, Reserved={handle.Reserved}, Handle={handle.Handle}, DevNotify={handle.DevNotify}, EventGuid={handle.EventGuid}, NameOffset={handle.NameOffset}, Data={handle.Data}");
var handleArgs = new UsbEventHandleArgs(deviceChangeEvent, handle.Handle, handle.DevNotify, handle.EventGuid, handle.NameOffset, handle.Data);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbHandle(monitor, handleArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbHandleCommand?.CanExecute(handleArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbHandleCommand?.Execute(handleArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbHandle(handleArgs);
break;
default:
break;
}
break;
case UsbDeviceChangeEvent.Changed:
var changedArgs = new UsbEventArgs(deviceChangeEvent);
// fire event
(monitor as IUsbMonitorEvents)?.CallUsbChanged(monitor, changedArgs);
// execute command
if ((monitor as IUsbMonitorCommands)?.UsbChangedCommand?.CanExecute(changedArgs) ?? false)
{
(monitor as IUsbMonitorCommands)?.UsbChangedCommand?.Execute(changedArgs);
}
// call virtual method
(monitor as IUsbMonitorOverrides)?.OnUsbChanged(changedArgs);
break;
}
}
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="action"></param>
/// <param name="name"></param>
internal UsbEventPortArgs(UsbDeviceChangeEvent action, string name) : base(action)
{
this.Name = name;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="action"></param>
/// <param name="unitmask"></param>
/// <param name="flags"></param>
/// <param name="drives"></param>
internal UsbEventVolumeArgs(UsbDeviceChangeEvent action, uint unitmask, ushort flags, char[] drives) : base(action)
{
this.UnitMask = unitmask;
this.Flags = (UsbVolumeFlags)flags;
this.Drives = drives;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="action"></param>
/// <param name="identifier"></param>
/// <param name="suppFunc"></param>
internal UsbEventOemArgs(UsbDeviceChangeEvent action, uint identifier, uint suppFunc) : base(action)
{
this.Identifier = identifier;
this.SuppFunc = suppFunc;
}
internal UsbEventArgs(UsbDeviceChangeEvent action)
{
this.Action = action;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="action"></param>
/// <param name="classGuid"></param>
/// <param name="deviceInterface"></param>
/// <param name="name"></param>
internal UsbEventDeviceInterfaceArgs(UsbDeviceChangeEvent action, Guid classGuid, UsbDeviceInterface deviceInterface, string name) : base(action)
{
this.ClassGuid = classGuid;
this.DeviceInterface = deviceInterface;
this.Name = name;
}