在PictureBox中画一个圆 [英] Draw a Circle in a PictureBox

问题描述

我有一个图片框，40 x 40，黑色.我想画一个40 x 40的圆圈，颜色-白色，圆圈中间的文字，前色-黑色.

我该怎么做?

I have a picturebox, 40 x 40, backcolor black. I want to draw a circle 40 x 40, color - white and text in the center of the circle, forecolor - black.

How do I do this???

推荐答案

这是完全有可能的(您需要获取图片的Graphics实例并在其上绘制)，但是没有道理.相反，您可以更轻松地使用自定义的Control，包括Form或Panel.类PictureBox不会为其添加任何有用的功能，只会造成一些麻烦并占用额外的运行时和内存.

问题是:该怎么办?我在过去的解决方案中对此进行了解释:我清除了旧图纸中的面板 [

This is quite possible (you need to get an instance of the Graphics of the picture and draw on it), but makes no sense. Instead, you can more easily draw on a custom Control, including Form or Panel. The class PictureBox won''t add any useful functionality to it, will only create some hassles and eat up extra runtime and memory.

The question is: what to do instead? I explain it in my past solution: How do I clear a panel from old drawing[^].

The link provided by Mika also shows how to do it right.

—SA

图片框的想法是可以将图片加载到其中.它并不意味着直接绘制.

这是一篇好看的文章: http://www.bobpowell.net/picturebox.htm [ ^ ]

The idea of the picturebox is that you can load a picture into it. It''s not meant to be drawn at directly.

Here''s one good looking article: http://www.bobpowell.net/picturebox.htm[^]

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