C# 如何在winform上以丰富格式绘制字符串？

我需要在windows窗体上以富格式写一行文本。如何实现这一点？

RichTextBox控件是否设置为readonly以满足您的需要？

您必须将字符串拆分为具有相同格式的“块”，并绘制每个“块”

使用Graphics.MeasureString计算位置，使用Graphics.DrawString进行最终绘制

简单示例代码（不解决文字包装、图像等问题）：

编辑：

如果您想要处理RTF，此链接可能有用：

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如果不是富文本框，则需要使用GDI+绘制文本。检查是否有帮助。
事实证明，在图形上下文中绘制RTF字符串没有任何标准方法。所以我有两种行动方式：
• 手动解析rtf字符串。将其划分为块，并利用TcKs的答案中所示的图形上下文
• 第二种方法是某种变通方法，但它完全可以随时使用。看或

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谢谢大家的帮助
除了TcKs代码外，以下部分将解决自动换行功能：

        private void pictureBox2_Paint(object sender, PaintEventArgs e)
    {
        var arial_8 = new Font("Arial", 8);
        var webdings_10 = new Font("Webdings", 10);

        var richTexts = new RichText[] {
        new RichText("Default text and this is the lengthy string to check the display. One more line to verify again")
        , new RichText("Default green text. this is the lengthy string to check the display. One more line to verify again", Color.Green)
        , new RichText("Regular arial 8.", arial_8)
        , new RichText("Bold arial 8.", new Font(arial_8, FontStyle.Bold))
        };

        var g = e.Graphics;

        Point textPosition = new Point(0, 0);
        int maxWidth = this.pictureBox2.ClientSize.Width;
        foreach (var richText in richTexts)
        {
            var text = richText.Text;
            if (string.IsNullOrEmpty(text)) { continue; }

            var font = richText.Font ?? Control.DefaultFont;
            var textColor = richText.TextColor ?? Control.DefaultForeColor;

            using (var brush = new SolidBrush(textColor))
            {
                string[] strs = text.Split(new string[] { " " }, StringSplitOptions.None);
                int fontheight = (int)g.MeasureString("\r\n", font).Height;
                foreach (string val in strs)
                {
                    var measure = g.MeasureString(val, font);
                    if (measure.Width + textPosition.X > maxWidth)
                    {
                        var newPosition = textPosition;
                        newPosition.X = 0;
                        newPosition.Y = textPosition.Y + fontheight;
                        textPosition = newPosition;
                    }

                    g.DrawString(val, font, brush, textPosition);

                    var nextposition = textPosition;
                    nextposition.X = textPosition.X + (int)measure.Width;
                    textPosition = nextposition;

                }
            }
        }
    }

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你说的渲染是什么意思？有什么东西阻止你使用标签吗？好的，我已经编辑了这个问题。我需要简单地在formRichTextBox上写富文本在我的情况下是不允许的，我需要精确地绘制字符串，然后您必须使用GDI+并手动绘制字符串。非常感谢。这似乎是有帮助的，我会尝试使用您的代码。但问题是，最初我有一个纯RTF格式的字符串format@Anton塞门诺夫：我添加了一些RTF处理的链接。谢谢！链接非常有趣两个链接都是死的

        private void pictureBox2_Paint(object sender, PaintEventArgs e)
    {
        var arial_8 = new Font("Arial", 8);
        var webdings_10 = new Font("Webdings", 10);

        var richTexts = new RichText[] {
        new RichText("Default text and this is the lengthy string to check the display. One more line to verify again")
        , new RichText("Default green text. this is the lengthy string to check the display. One more line to verify again", Color.Green)
        , new RichText("Regular arial 8.", arial_8)
        , new RichText("Bold arial 8.", new Font(arial_8, FontStyle.Bold))
        };

        var g = e.Graphics;

        Point textPosition = new Point(0, 0);
        int maxWidth = this.pictureBox2.ClientSize.Width;
        foreach (var richText in richTexts)
        {
            var text = richText.Text;
            if (string.IsNullOrEmpty(text)) { continue; }

            var font = richText.Font ?? Control.DefaultFont;
            var textColor = richText.TextColor ?? Control.DefaultForeColor;

            using (var brush = new SolidBrush(textColor))
            {
                string[] strs = text.Split(new string[] { " " }, StringSplitOptions.None);
                int fontheight = (int)g.MeasureString("\r\n", font).Height;
                foreach (string val in strs)
                {
                    var measure = g.MeasureString(val, font);
                    if (measure.Width + textPosition.X > maxWidth)
                    {
                        var newPosition = textPosition;
                        newPosition.X = 0;
                        newPosition.Y = textPosition.Y + fontheight;
                        textPosition = newPosition;
                    }

                    g.DrawString(val, font, brush, textPosition);

                    var nextposition = textPosition;
                    nextposition.X = textPosition.X + (int)measure.Width;
                    textPosition = nextposition;

                }
            }
        }
    }