lyfz_repos/铂金版源码/LYFZ.ComponentLibrary/ExToolTip.cs

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Text;
using System.Drawing;
using System.ComponentModel;
namespace LYFZ.ComponentLibrary
{
    public class ExToolTip : System.Windows.Forms.ToolTip
    {
        public ExToolTip()
        {
            this.OwnerDraw = true;
            this.Draw += ExToolTip_Draw;
            this.Popup += ExToolTip_Popup;

        }
        Font toolTipFont = new Font("微软雅黑", 16);
        /// <summary>
        /// 设置提示文字大小
        /// </summary>
        [DescriptionAttribute("设置提示文字大小"), CategoryAttribute("组件扩展属性")]
        public Font ToolTipFont
        {
            get { return toolTipFont; }
            set { toolTipFont = value; }
        }
        void ExToolTip_Popup(object sender, System.Windows.Forms.PopupEventArgs e)
        {
            try
            {
                if (e.AssociatedControl.Tag != null && e.AssociatedControl.Tag.GetType() == typeof(ExToolTipText))
                {
                    ExToolTipText tooltipText = (ExToolTipText)e.AssociatedControl.Tag;
                    //e.ToolTipSize = System.Windows.Forms.TextRenderer.MeasureText(tooltipText.ToolTipText, toolTipFont);
                    //e.ToolTipSize = new Size(Convert.ToInt32(e.ToolTipSize.Width * 0.5), Convert.ToInt32(e.ToolTipSize.Height * 0.5));

                    Size si = System.Windows.Forms.TextRenderer.MeasureText(tooltipText.ToolTipText, toolTipFont);
                    e.ToolTipSize = new Size(si.Width + 10, si.Height + 10);
                }
            }
            catch
            {

            }


        }

        void ExToolTip_Draw(object sender, System.Windows.Forms.DrawToolTipEventArgs e)
        {
            e.DrawBackground();
            e.DrawBorder();
            e.Graphics.DrawString(e.ToolTipText, toolTipFont, Brushes.Black, new PointF(2, 2));
        }


    }
    /// <summary>
    /// 工具提示文本对象
    /// </summary>
    public class ExToolTipText
    {
        public ExToolTipText(string toolTipText, object tag = null)
        {
            this.tag = tag;
            this.toolTipText = toolTipText;
        }

        object tag = null;

        public object Tag
        {
            get { return tag; }
            set { tag = value; }
        }

        string toolTipText = "";
        /// <summary>
        /// 自定义工具提示文字
        /// </summary>
        public string ToolTipText
        {
            get { return toolTipText; }
            set { toolTipText = value; }
        }
    }
}