DutyContent/ThirdParty/EXComboBox.cs

// https://www.codeproject.com/Articles/13006/Extended-ListView
using System.Windows.Forms;
using System.Drawing;
using System.Collections;

namespace DutyContent.ThirdParty
{
	class EXComboBox : ComboBox
	{
		private Brush _highlightbrush; //color of highlighted items

		public EXComboBox()
		{
			_highlightbrush = SystemBrushes.Highlight;
			DrawMode = DrawMode.OwnerDrawFixed;
			DrawItem += new DrawItemEventHandler(SelfDrawItem);
		}

		public Brush MyHighlightBrush
		{
			get { return _highlightbrush; }
			set { _highlightbrush = value; }
		}

		private void SelfDrawItem(object sender, DrawItemEventArgs e)
		{
			if (e.Index == -1) 
				return;

			e.DrawBackground();

			if ((e.State & DrawItemState.Selected) != 0)
			{
				e.Graphics.FillRectangle(_highlightbrush, e.Bounds);
			}

			EXItem item = (EXItem)this.Items[e.Index];
			Rectangle bounds = e.Bounds;
			int x = bounds.X + 2;
			
			if (item.GetType() == typeof(EXImageItem))
			{
				EXImageItem imgitem = (EXImageItem)item;
				if (imgitem.MyImage != null)
				{
					Image img = imgitem.MyImage;
					int y = bounds.Y + ((int)(bounds.Height / 2)) - ((int)(img.Height / 2)) + 1;
					e.Graphics.DrawImage(img, x, y, img.Width, img.Height);
					x += img.Width + 2;
				}
			}
			else if (item.GetType() == typeof(EXMultipleImagesItem))
			{
				EXMultipleImagesItem imgitem = (EXMultipleImagesItem)item;
				if (imgitem.MyImages != null)
				{
					for (int i = 0; i < imgitem.MyImages.Count; i++)
					{
						Image img = (Image)imgitem.MyImages[i];
						int y = bounds.Y + ((int)(bounds.Height / 2)) - ((int)(img.Height / 2)) + 1;
						e.Graphics.DrawImage(img, x, y, img.Width, img.Height);
						x += img.Width + 2;
					}
				}
			}
			
			int fonty = bounds.Y + ((int)(bounds.Height / 2)) - ((int)(e.Font.Height / 2));
			e.Graphics.DrawString(item.Text, e.Font, new SolidBrush(e.ForeColor), x, fonty);
			e.DrawFocusRectangle();
		}

		public class EXItem
		{
			private string _text = "";
			private string _value = "";

			public EXItem()
			{

			}

			public EXItem(string text)
			{
				_text = text;
			}

			public string Text
			{
				get { return _text; }
				set { _text = value; }
			}

			public string MyValue
			{
				get { return _value; }
				set { _value = value; }
			}

			public override string ToString()
			{
				return _text;
			}

		}

		public class EXImageItem : EXItem
		{
			private Image _image;

			public EXImageItem()
			{

			}

			public EXImageItem(string text)
			{
				this.Text = text;
			}

			public EXImageItem(Image image)
			{
				_image = image;
			}

			public EXImageItem(string text, Image image)
			{
				this.Text = text;
				_image = image;
			}

			public EXImageItem(Image image, string value)
			{
				_image = image;
				this.MyValue = value;
			}

			public EXImageItem(string text, Image image, string value)
			{
				this.Text = text;
				_image = image;
				this.MyValue = value;
			}

			public Image MyImage
			{
				get { return _image; }
				set { _image = value; }
			}

		}

		public class EXMultipleImagesItem : EXItem
		{
			private ArrayList _images;

			public EXMultipleImagesItem()
			{

			}

			public EXMultipleImagesItem(string text)
			{
				this.Text = text;
			}

			public EXMultipleImagesItem(ArrayList images)
			{
				_images = images;
			}

			public EXMultipleImagesItem(string text, ArrayList images)
			{
				this.Text = text;
				_images = images;
			}

			public EXMultipleImagesItem(ArrayList images, string value)
			{
				_images = images;
				this.MyValue = value;
			}

			public EXMultipleImagesItem(string text, ArrayList images, string value)
			{
				this.Text = text;
				_images = images;
				this.MyValue = value;
			}

			public ArrayList MyImages
			{
				get { return _images; }
				set { _images = value; }
			}

		}

	}
}