C# 改变按钮文本的大小

Question

当我改变按钮的大小时，我希望按钮字体的大小动态改变。到目前为止，我已将按钮放置在正确的位置，并且当我调整表单大小时，按钮的大小也会发生变化。但是当按钮对于按钮中的文本变小时，字母就会“掉”出来。

如何根据按钮本身的大小更改按钮文本的大小？

Answer 1

要使按钮中的文本响应，请使用以下代码:

    //paint event from button:
    private void button1_Paint(object sender, PaintEventArgs e)
    {
        float fontSize = NewFontSize(e.Graphics, button1.Size, button1.Font, button1.Text);

        // set font with Font Class and the returned Size from NewFontSize();
        Font f = new Font("Arial", fontSize, FontStyle.Bold);
        button1.Font = f;
    }

    // method to calculate the size for the font:
    public static float NewFontSize(Graphics graphics, Size size, Font font, string str)
    {
        SizeF stringSize = graphics.MeasureString(str, font);
        float wRatio = size.Width / stringSize.Width;
        float hRatio = size.Height / stringSize.Height;
        float ratio = Math.Min(hRatio, wRatio);
        return font.Size * ratio;
    }

代码示例:

As you see font will be resizeable inside the button. And the text will not be thrown out of the button. You also can use this for other Controllers as well.