如何用C#写一个透明控件？（WinForm程序）

Posted 2023-04-13

我在一个panel里放了一个控件A，我还想在这个panel里放一个透明的控件B，然后B控件执行BringToFront方法后希望仍能看见它后面的A控件，请问如何做这个透明的B控件呢？谢谢！
BackColor我试过了，我让它等于transparent，但是达不到透明的效果，只是显示了父控件的背景色，所以大家帮帮忙！

参考技术A 首先先从System.Windows.Forms.Panel 继承一个自定义控件,然后在控件的构造函数中添加下面的代码 :
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.BackColor = Color.Transparent;

其中调用SetStyle函数进行设置ControlStyles.SupportsTransparentBackColor为true

然后设置控件的背景颜色为透明Color.Transparent.

把设计好的控件添加到WINFORM中来,发现自定义控件可以在其他控件上面时可以变成透明,但是如果放在图片控件上面却没有透明效果,为了这个问题,研究了半天,后来终于发现只需要简单的设置一下控件的parent属性为图片控件即可.代码如下 :

Panel21.Parent = pictureBox1;本回答被提问者采纳 参考技术B CuteEditor 6.0 在线HTML编辑器的领航者
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如何用C#编写文本编辑器

这个问题比较大，其实看你写什么样的文本编辑器。
做法：
1.
简单记事本：用winform
或者
wpf
放一个
textbox
控件，实现一下多行，放置几个菜单，添加上保存等功能就可以了。
2.
富文本编辑器，用 richtextbox
控件，实现编辑、剪贴、撤销等操作。
3.
特定的编辑器，比如说实现一个
markdown
编辑器，你就需要对特定描述语言的解析了。 参考技术A 这个问题比较大，其实看你写什么样的文本编辑器。
做法：
简单记事本：用WinForm
或者
WPF
放一个
TextBox
控件，实现一下多行，放置几个菜单，添加上保存等功能就可以了。
富文本编辑器，用
RichTextBox
控件，实现编辑、剪贴、撤销等操作。
特定的编辑器，比如说实现一个
MarkDown
编辑器，你就需要对特定描述语言的解析了。