public DeviceClassFolder(DeviceManagerFolder parent, Guid classGuid)
: base(parent, new GuidKeyShellItemId(classGuid))
{
ClassGuid = classGuid;
// come up with the display name for class
var sb = new StringBuilder(1024);
var size = sb.Capacity;
SetupDiGetClassDescription(classGuid, sb, sb.Capacity, ref size);
DisplayName = sb.ToString();
var iconIndex = GetIconPath(out var iconPath);
if (iconIndex.HasValue && iconPath != null)
{
Thumbnail = new ShellThumbnail(NormalizeIconPath(iconPath), iconIndex.Value);
}
// remove default columns we don't need here
RemoveColumn(Props.System.ItemType);
RemoveColumn(Props.System.Size);
RemoveColumn(Props.System.DateModified);
RemoveColumn(Props.System.PerceivedType);
RemoveColumn(Props.System.Kind);
// add these ones, already defined by Windows
AddColumn(Props.System.Devices.DeviceInstanceId, SHCOLSTATE.SHCOLSTATE_ONBYDEFAULT);
AddColumn(Props.System.Devices.ClassGuid, SHCOLSTATE.SHCOLSTATE_ONBYDEFAULT);
AddColumn(Props.System.Devices.ContainerId, SHCOLSTATE.SHCOLSTATE_ONBYDEFAULT);
}
protected override ShellFolder GetFolderAsRoot(ShellItemIdList idList)
{
if (_root == null)
{
lock (_lock)
{
// now, we're creating the root folder, so we add all previous actions to it
_root = new DeviceManagerFolder(idList);
var deviceInterfaces = _added.ToArray();
_added.Clear();
var updates = _updated.ToArray();
_updated.Clear();
var removed = _removed.ToArray();
_removed.Clear();
Task.Run(() =>
{
foreach (var deviceInterface in deviceInterfaces)
{
_ = _root.AddDeviceInterface(deviceInterface);
}
foreach (var update in updates)
{
_root.UpdateDeviceInterface(update);
}
foreach (var remove in removed)
{
_root.RemoveDeviceInterface(remove);
}
});
}
}
return(_root);
}
