字体大小影响标签大小 [英] font size affecting size of Label

问题描述

据我所知，更改 System.Windows.Forms.Label 的字体大小不会影响(效果?)它的大小.但是，就我而言，它似乎确实如此.在下面的代码示例中，我想要的是一个填充屏幕的标签.我通过将它放在 TableLayoutPanel 中来做到这一点，并使两者都具有 DockStyle.Fill.为了可见性，我将标签设为红色.

As far as I know, changing the Font size of a System.Windows.Forms.Label doesn't affect (effect?) it's size. However, in my case it seems it does. What I want in the following code example is a Label that fills the screen. I do that by placing it in a TableLayoutPanel and make both have DockStyle.Fill. I made the Label red for visibility.

现在我开始在每次调整大小时弄乱字体大小.如果我将字体大小设置为特定值，一切都会按预期进行.但是，如果我将 Font-size 设置为动态的，无论多么简单，我都会将 Label 的大小重置为 (100, 23) 的初始大小并保持该大小.为什么会发生这种情况?

Now I start messing around with the font-size on each resize. If I set the font-size to a specific value, everything works as expected. However if I set the Font-size to something dynamic, however simplistic, I get that the size of the Label resets to the initial size of (100, 23) and stays at that size. Why does this happen?

public class Form2 : Form
{
    public Form2()
    {
        this.DoubleBuffered = true;

        //Create a TableLayoutPanel that covers the entire screen with 1 cell.
        TableLayoutPanel TLP = new TableLayoutPanel();
        TLP.Dock = DockStyle.Fill;
        TLP.RowCount = 1;
        TLP.RowStyles.Add(new RowStyle(SizeType.Percent, 1F));
        TLP.ColumnCount = 1;
        TLP.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 1F));

        //Create a Label that fills the entire cell of the TableLayoutPanel. Make the Label red to visualise it's size.
        Label label1 = new Label();
        label1.BackColor = Color.Red;
        label1.Dock = DockStyle.Fill;
        label1.Resize += new EventHandler((o,e) => Form2.test((Label)o));
        TLP.Controls.Add(label1, 0, 0);

        //Add the TableLayoutPanel to the controls
        this.Controls.Add(TLP);
    }

    //Methode that messes around with the font-size a bit.
    public static void test(Label label1)
    {
        if (label1.Font.Size == 3)
        {
            label1.Font = new Font(label1.Font.FontFamily, 4F);
        }
        else
        {
            label1.Font = new Font(label1.Font.FontFamily, 3F);
        }
        return;
    }
}

当我想以这样一种方式动态设置标签的字体大小时，出现了这个问题，即文本总是尽可能地填充标签的大小.

This problem came up when I wanted to dynamicly set the font-size of a Label in such a way that the text always filled the size of the Label as good as possible.

推荐答案

类似的东西

private void Form1_Resize(object sender, EventArgs e)
    {

        Font f;
        Graphics g;
        SizeF s;
        Single Faktor, FaktorX, FaktorY;

        g = label2.CreateGraphics();
        s = g.MeasureString(label2.Text, label2.Font, label2.Size);
        g.Dispose();

        FaktorX = label2.Width / s.Width;
        FaktorY = label2.Height / s.Height;

        if (FaktorX > FaktorY)
        {
            Faktor = FaktorY;
        }
        else
        {
            Faktor = FaktorX;
        }

        f = label2.Font;
        label2.Font = new Font(f.Name, f.SizeInPoints * Faktor);
    }

它不漂亮，但你可以解决这个问题

It is not pretty but you can work on this

瓦尔特

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