关于计算文字显示占用画面大小（System.Drawing.Graphics.MeasureString）

    var font = new Font("微软雅黑", 9F);
    var maxTextWidth = panel_detail.Width - 22 - DETAIL_BASE_INDENT - DETAIL_INDENT * level - 6;
    var graphic = panel_detail.CreateGraphics();
    var textRemained = text;
    while (textRemained.Length > 0)
    {
        int characters, lines;
        graphic.MeasureString(textRemained, font,
            new SizeF(Convert.ToSingle(maxTextWidth), Convert.ToSingle(DETAIL_HEIGHT)), StringFormat.GenericTypographic,
            out characters, out lines);
        var currentTextLine = textRemained.Substring(0, characters);
        textRemained = textRemained.Substring(characters);

        // TODO: 使用font作为参数，将currentTextLine中的文字展示出来
    }