/// <summary>
 /// Invokes the 'ImageSizeChanged' event handler.
 /// </summary>
 /// <param name="e">Event arguments.</param>
 protected virtual void OnImageSizeChanged(ShengToolStripOldNewEventArgs<ShengToolStripImageSize> e)
 {
     ShengToolStripOldNewEventHandler<ShengToolStripImageSize> handler = this.ImageSizeChanged;
     if (handler != null)
         this.ImageSizeChanged(this, e);
 }
 /// <summary>
 /// Invoked the 'IconChanged' event.
 /// </summary>
 /// <param name="e">Provides access to old and new icons.</param>
 public virtual void OnIconChanged(ShengToolStripOldNewEventArgs<Icon> e)
 {
     if (this.IconChanged != null)
         this.IconChanged(this, e);
 }