public class ComboBox
    {

        public int index;//索引
        public string weight="";//权重

        private int labelWidth = 60;//标题的宽

        public float Weight
        {
            get { return float.Parse(weight); }
        }
        /// <summary>
        /// 复选框的宽度
        /// </summary>
        public const int WIDTH = 150;
        /// <summary>
        /// 复选框的高度
        /// </summary>
        public const int Height = 20;
        /// <summary>
        /// Lable
        /// </summary>
        public string label = "";

        public int viewAreaHeight = 200;


        public ComboBox(Dictionary<object, object> dataSource,int viewHeight = 200)
        {
            if (dataSource == null)
            {
                dataSource = new Dictionary<object, object>();
                for (int i = 0; i < 50; i++)
                {
                    dataSource.Add(i, string.Format("<color=#ff0000ff>请初始化数据 {0}</color>" ,i));
                }
            }
            viewAreaHeight = viewHeight;
            this.Init(dataSource,1);
        }
        private Dictionary<object, object> dataSource;
        private object currentValue;
        private object currentDisplayText;
        private int currentIndex;
       
        private bool showList;
        private Vector2 scrollPosition;
        private float showListTime;
        private int guiDepth;
        private bool alreadyInitGuiDepth;
        /// <summary>
        /// 选择项更改事件参数 
        /// </summary>
        public class SelectItemChangedArgs : EventArgs
        {
            private object itemValue;
            private object itemDisplayText;
            public object ItemValue
            {
                get
                {
                    return itemValue;
                }
            }
            public object ItemDisplayText
            {
                get
                {
                    return itemDisplayText;
                }
            }
            public SelectItemChangedArgs(object iValue, object iDisplayText)
            {
                itemValue = http://www.mamicode.com/iValue;"data">
        /// A <see cref="Dictionary<System.Object, System.Object>"/>
        /// </param>
        /// <param name="depth">
        /// A <see cref="System.Int32"/>
        /// </param>
        public void Init(Dictionary<object, object> data, int depth)
        {
            dataSource = data;
            currentIndex = -1;
            //将控件置于当前GUI元素之上,并且只在第一次调用初始化方法设置GUI深度,防止循环中重复调用
            if (!alreadyInitGuiDepth)
            {
                //guiDepth = GUI.depth - 1;
                alreadyInitGuiDepth = true;
            }
            currentDisplayText = null;
            currentValue = http://www.mamicode.com/null;"show">
        /// A <see cref="System.Boolean"/>
        /// </param>
        public void SetShowList(bool show)
        {
            if (showList)
            {
                showList = show;
            }
        }
        /// <summary>
        /// 绘制下拉列表框 
        /// </summary>
        public void Draw()
        {
            if (dataSource == null)
            {
                return;
            }
            if (currentDisplayText == null || currentValue =http://www.mamicode.com/= null)"无";
                    currentValue = http://www.mamicode.com/-1;""))
            {
                spaceW = 0;
            }
            GUILayout.Label(label, GUILayout.Width(spaceW));

            string buttonName = "";
            if(currentDisplayText == null)
            {
                buttonName = "无";
            }else if(currentDisplayText is monster_model)
            {
                buttonName = ((monster_model)currentDisplayText).name;
            }else if(currentDisplayText is string)
            {
                buttonName = currentDisplayText.ToString();
            }
            buttonName += (showList ? "   <color=#f27272FF>></color>" : "   <color=#f27272FF>V</color>");

            if (GUILayout.Button(buttonName,GUILayout.Width(WIDTH + 20)))
            {
                showList = !showList;
                if (showList)
                {
                    showListTime = Time.time;
                }
                else
                {
                    showListTime = 0f;
                }
            }
            GUILayout.EndHorizontal();
            this.DrawList();
            GUILayout.EndVertical();
        }
        /// <summary>
        /// 绘制列表项
        /// </summary>
        public void DrawList()
        {
            if (showList == true)
            {
                //为了留出最方下的横线,这里高度减1
                GUILayout.BeginHorizontal();
                int spaceW = labelWidth;
                if (label == null || label.Equals(""))
                {
                    spaceW = 0;
                }
                GUILayout.Label("", GUILayout.Width(spaceW));

                scrollPosition = Vector2.Lerp(scrollPosition, GUILayout.BeginScrollView(scrollPosition, true, true,GUILayout.Width(WIDTH+20),GUILayout.Height(this.viewAreaHeight)), 0.5f);

                for (int i = 0; i < dataSource.Count; i++)
                {
                    drawItem(i);
                }
                GUILayout.EndScrollView();
                GUILayout.EndHorizontal();
            }
        }
        /// <summary>
        /// 绘制内容项,并响应事件 
        /// </summary>
        /// <param name="index">
        /// A <see cref="System.Int32"/>
        /// </param>
        private void drawItem(int index)
        {
            object value = http://www.mamicode.com/dataSource.Values.ElementAt(index);>