请教+散分:如何在winform中用PictureBox时能实现Web中<img>的alt属性?

Question

<img alt="aaaaa">鼠标移到图片上时会出现一行字.
在C#中怎么实现这种效果?用的是PictureBox控件.
注意,是winform

Answer 1

    class CusomPictureBox : PictureBox
    {
        private Font font=null;
        private string alt=string.Empty;
        private Color foreColor=Color.Black;
        public CusomPictureBox()
        {
        }        protected override void OnCreateControl()
        {
            font = this.FindForm().Font;
        }        public Font Font
        {
            get { return font; }
            set { font = value; }
        }        public Color ForeColor
        {
            get { return foreColor; }
            set { foreColor = value; }
        }        public string Alt
        {
            set { alt = value; }
            get { return alt; }
        }        protected override void OnPaint(PaintEventArgs pe)
        {
            base.OnPaint(pe);
            if (this.Image == null)
            {
                pe.Graphics.DrawString(alt, font, new SolidBrush(foreColor), new PointF(10, 10));
            }
        }
    }

Answer 2

在 pictureBox的 MouseHover事件里加个toolTip   设一个坐标位置show出来就可以了

Answer 3

        private void pictureBox1_MouseEnter(object sender, EventArgs e)
        {
            toolTip1.Show("tttt", this.pictureBox1, 100);
            toolTip1.AutoPopDelay = 5000;
            toolTip1.InitialDelay = 1000;
            toolTip1.ReshowDelay = 500;
        }

Answer 4

string txt = "要显示的内容";
ToolTip tip = new ToolTip(this.components);
tip.SetToolTip(this.pictureBox1, txt);

Answer 5

^ō^也可直接双击工具箱->ToolTip, 新增 toolTip1 实例..此时, 两次选中 pictureBox1, 你会发现 pictureBox1->属性列表中多了个"toolTip1 上的 ToolTip"属性, 直接输入内容即可..