protected override void RefreshThumbnail(bool forceRefresh)
{
// To prevent flickering the old broken thumbnail is removed AFTER the new shiny one is created
IDwmThumbnail obsoleteThumbnail = forceRefresh ? this._thumbnail : null;
if ((this._thumbnail == null) || forceRefresh)
{
this.RegisterThumbnail();
}
obsoleteThumbnail?.Unregister();
}
private void RegisterThumbnail()
{
this._thumbnail = this.WindowManager.GetLiveThumbnail(this.Handle, this.Id);
this._thumbnail.Move(this._startLocation.X, this._startLocation.Y, this._endLocation.X, this._endLocation.Y);
this._thumbnail.Update();
}
