02-控件操作/美化ComboBox/BeautifyComboBox/B_ComboBox.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace BeautifyComboBox
{
    public partial class B_ComboBox : ComboBox
    {
        public B_ComboBox()
        {
            InitializeComponent();
            this.DrawMode = DrawMode.OwnerDrawFixed;
            //this.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.ListBox_DrawItem);
        }

        #region 变量
        private static Brush[] listBoxBrushes;//该数组用来存储绘制listBox1背景的Brush对象
        private static int place = -1;//颜色位置的取值
        private static bool naught = true;//判断是否重绘
        #endregion

        #region 属性

        private bool TGradualC = false;
        [Browsable(true), Category("控件的重绘设置"), Description("判断是否进行渐变色的设置")] //在“属性”窗口中显示DataStyle属性
        public bool GradualC
        {
            get { return TGradualC; }
            set
            {
                TGradualC = value;
                this.Invalidate();
            }
        }

        private Color TColorSelect = Color.Gainsboro;
        [Browsable(true), Category("控件的重绘设置"), Description("项被选中后的高亮度颜色")] //在“属性”窗口中显示DataStyle属性
        public Color ColorSelect
        {
            get { return TColorSelect; }
            set
            {
                TColorSelect = value;
                this.Invalidate();
            }
        }

        private Color TColor1 = Color.CornflowerBlue;
        [Browsable(true), Category("控件的重绘设置"), Description("第一个颜色的设置")] //在“属性”窗口中显示DataStyle属性
        public Color Color1
        {
            get { return TColor1; }
            set
            {