C＃图形，绘画，图片盒居中 [英] C# graphics, paint, picturebox centering

问题描述

好的，这是问题所在：在C＃表单中，我创建了一个新的private void：

Ok, so this is the problem: in C# forms I've created a new private void:

private void NewBtn(string Name, int x, int y)

其目的是创建一个模仿行为的picturebox的按钮（不要问为什么，我只是喜欢复杂的事情），并可以多次调用我想要的。

Which has a purpose of creating a picturebox that imitates behavior of a button (don't ask why, I simply enjoy complicating things) and can be called as many times as I want.

Font btnFont = new Font("Tahoma", 16);
PictureBox S = new PictureBox();
S.Location = new System.Drawing.Point(x, y);
S.Paint += new PaintEventHandler((sender, e) =>
{
    e.Graphics.TextRenderingHint = 
        System.Drawing.Text.TextRenderingHint.AntiAlias;
    e.Graphics.DrawString(Name, btnFont, Brushes.Black, 0, 0);
});
Controls.Add(S);

现在，我担心Paint / Graphics的一部分（忽略代码的其余部分，我只给了一些）。当我将它称为NewBtn（Name，x，y）时，我想将我写为名称的文本居中放在void中。那么，我应该怎么说呢？

Now, I am worried about part with Paint/Graphics (ignore rest of the code, I only gave some of it). I want to center the text that I write as "Name" in void when I call it "NewBtn(Name, x, y)". So, what should I put as

e.Graphics.DrawString(Name, btnFont, Brushes.Black, ThisX???, 0);

建议？

Suggestions?

推荐答案

var size = g.MeasureString(Name, btnFont);

e.Graphics.DrawString(Name, btnFont, Brushes.Black,
                      (S.Width - size.Width) / 2,
                      (S.Height - size.Height) / 2));

考虑到字体和文本不会改变一个特定的Button / PictureBox。

You can improve this by measuring the string only once, considering the font and text won't change for a specific Button/PictureBox.

我还建议检查 S.Size 是宽/高于 size 并处理它，所以图形不会尝试绘制从负坐标开始的字符串。

And I would also suggest checking if S.Size is wider / taller than size and handling it, so graphics won't try to draw a string starting at negative coordinates.

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