public static IntPtr Register(IntPtr hRecipient, Guid classGuid, RegisterDeviceNotificationFlags flags)
{
var buffer = IntPtr.Zero;
var handle = IntPtr.Zero;
var notificationFilter = new DevBroadcastDeviceInterfaceStruct
{
DeviceType = (uint)Dbch_DeviceType.DBT_DEVTYP_DEVICEINTERFACE,
Reserved = 0,
ClassGuid = classGuid,
Name = 0 //TODO: pass from arguments
};
notificationFilter.Size = Marshal.SizeOf(notificationFilter);
try
{
buffer = Marshal.AllocHGlobal(notificationFilter.Size);
Marshal.StructureToPtr(notificationFilter, buffer, true);
handle = RegisterDeviceNotificationMethod(hRecipient, buffer, (uint)flags);
}
finally
{
Marshal.FreeHGlobal(buffer);
}
return handle;
}
/// <summary>
/// Registers a window to receive notifications when USB devices are plugged or unplugged.
/// </summary>
/// <param name="windowHandle">Handle to the window receiving notifications.</param>
private static void RegisterUsbDeviceNotification(IntPtr windowHandle)
{
var dbi = new DevBroadcastDeviceinterface {
DeviceType = DeviceType.DBT_DEVTYP_DEVICEINTERFACE,
Reserved = 0,
Name = 0,
ClassGuid = GUID_DEVINTERFACE_HID, // not used when flags contains ALL_INTERFACE_CLASSES
};
dbi.Size = Marshal.SizeOf(dbi);
IntPtr buffer = Marshal.AllocHGlobal(dbi.Size);
Marshal.StructureToPtr(dbi, buffer, true);
RegisterDeviceNotificationFlags flags =
RegisterDeviceNotificationFlags.DEVICE_NOTIFY_WINDOW_HANDLE;
_notificationHandle = RegisterDeviceNotification(windowHandle, buffer, flags);
}
internal static extern RegisterDeviceNotificationSafeHandle RegisterDeviceNotification_SafeHandle(
IntPtr hRecipient,
ref DEV_BROADCAST_HANDLE notificationFilter,
RegisterDeviceNotificationFlags flags
);
private static extern IntPtr RegisterDeviceNotification(IntPtr recipient, IntPtr notificationFilter, RegisterDeviceNotificationFlags flags);
