protected override void OnActivated(EventArgs e)
        {
            base.OnActivated(e);
            if (XTheme.ShowShadow && !base.IsMdiChild)
            {
                if (_shawdowForm == null)
                {
                    _shawdowForm = new SmartShadow(this);
                    SetShadowFormSize();
                    SetShadowFormLocation();
                    _shawdowForm.Show(this);
                    SetShadowFormSize();
                    SetShadowFormLocation();

                    _shawdowForm.TopMost = base.TopMost;

                    var size = base.MinimumSize;
                    size.Width += ShadowWidth * 2;
                    size.Height += ShadowWidth * 2;
                    _shawdowForm.MinimumSize = size;

                    if (XTheme.UseShadowToResize)
                        _shawdowForm.BeginToResizeOwner();
                }
            }
        }
        private void PrepareForNewTheme()
        {
            if (base.Region != null)
                base.Region.Dispose();
            base.Region = null;

            if (ControlBox)
            {
                controlBoxManager.ResetBoxColor();
                controlBoxManager.FormResize();
            }
            SetFormRegion();
            //Padding = new Padding(0);
            base.BackColor = XTheme.FormBackColor;
            base.OnSizeChanged(EventArgs.Empty);
            SetFormMinimizeSize();
            if (XTheme.ShowShadow)
            {
                if (_shawdowForm == null || _shawdowForm.IsDisposed)
                {
                    OnActivated(EventArgs.Empty);
                }
            }
            else
            {
                if (_shawdowForm != null)
                {
                    _shawdowForm.Close();
                    _shawdowForm = null;
                }
            }
        }